How Many Days Is A Horse Pregnant? (Perfect answer)

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  • What is the Normal Length of a Pregnancy (Gestation Period)? Horses may be pregnant for as long as 326 days to 354 days. There are even some cases where gestation for a mare has reached as high as 365 to 370 days.

How many days is a mare pregnant?

The average length of pregnancy in the mare is 338 to 343 days. However, normal gestation can range from 320 to 380 days. You needn’t become overly concerned if your mare is past due.

How long does a horse carry a baby?

The normal gestation length for a mare can range from 320 to 360 days, with the average being around 340 days. Stage One The first stage of labor is generally the longest and may take from one to four hours.

What is a foaling date?

The gestation period of horses is about eleven months and the time of birth may be called foaling, or foaling out. The date the mare is expected to give birth is called the foaling date. The horse’s birthday is when it foaled.

How many days can a mare go over her due date?

So a mare that goes over significantly ( more than 30 days ) over her due date may have some placental dysfunction resulting in slower maturation of the fetus and a delay in foaling.

Can a horse have twins?

Rare Case All Around In horses, twin fetuses are uncommon. Carrying them to term is even more unusual, and birthing healthy twin foals is especially unlikely. “Twin pregnancies are extremely undesirable in horses, as they almost always have a bad outcome,” said Dr.

Could a horse carry a human baby?

Probably not. Ethical considerations preclude definitive research on the subject, but it’s safe to say that human DNA has become so different from that of other animals that interbreeding would likely be impossible.

How many times can a horse get pregnant?

A mare (a female horse) can only produce one foal per year. A mare is capable of producing a foal at about 18 months of age but it’s healthier if the mare is at least four years old since it will have reached her full size. A mare may continue having foals until she is in her late twenties.

How many foals can a horse have?

On average, a female horse, or mare, can have between 16-20 foals in her lifetime. However, this number is a rough estimate because so many factors can affect the number of foals a mare can have. Such factors include the breed, health, and fertility of the mare.

When do horses typically foal?

Mares normally come into season, or heat, from April to October. Given the 11-month gestation period, that means foals start hitting the ground in May and the latest babies of the year in September.

What is female horse called?

…male horse is called a stallion, the female a mare. A stallion used for breeding is known as a stud.

How long can a mare carry a dead foal?

What is abortion? Abortion is the delivery of a dead foal and its placenta before an age at which the foal would have been able to survive independently. This is usually taken to be up to day 300-310 of gestation. After 300-310 days, if a dead foal is delivered it is usually termed stillborn.

How long is a horse in labor?

The foal is usually born after 12 to 18 minutes of heavy labor. Maiden mares (mares foaling for the first time) are more likely to take about an hour to expel the fetus. Handlers should be ready to assist if it goes much longer than an hour. Mature mares in labor for more than 30 to 45 minutes may also need assistance.

How many days does a mare carry her foal?

The average gestation length of the mare is 340 days (range 315-365 days) and gives ample time to prepare for the arrival of the newborn foal. Mares due in winter tend to carry their foals longer than mares due in summer.

How Long Is a Horse Pregnant?

How long does it take a horse to become pregnant? Well, the quick answer is 10 to 12 months, or around 326 to 354 days, depending on your perspective (although there have been cases where gestation for a mare has gone as long as 365 to 370 days). The majority of mares only give birth to one foal per pregnancy, while twins do occur on rare occasion. If you’re thinking of breeding your horse, there’s a lot more information you should be aware of. Mares are polyestrous on a seasonal basis. Put another way, it indicates that the mare behaves somewhat similarly to a cat in that she will go through numerous cycles throughout a specific season.

This is assumed to be an evolutionary trait to guarantee that the mare gives birth at the most favorable time of year, which is believed to be in the springtime.

The Mare’s Cycle is Key

A thorough understanding of a mare’s life cycle is essential for managing mares in general, and it is absolutely essential for designing a successful breeding program. Due to the fact that mares are seasonally polyestrous, the mare will respond to light stimulation. This implies that when the amount of daylight increases, her cycles will begin to begin by reducing melatonin levels. The following are crucial dates to keep in mind for horse breeders:

  • In the United States, the Summer Solstice is celebrated on June 21, which is the longest day of the year and the apex of the natural mating season. During the Fall Equinox, which occurs on September 21, when there is equal daylight and darkness, and the mares are shutting off as the season changes, Horses are in their deepest anestrus on December 21, which is the shortest day of the year and the shortest day of the year. The mares are in Spring Transition 1 during the time of the Spring Equinox, which occurs on March 21 when there is equal light and dark.

These are, of course, estimates based on current information. When it comes to the commencement of cyclicity, temperature can also play a role because it is thought to be regulated in part by a neurotransmitter that is also involved in prolactin release. The lowering of opioid inhibition of the gonadal axis may also have a role in the initiation of the breeding season, according to certain theories. Normal horse cycles are said to begin around the Summer Solstice, which coincides with the start of the natural mating season.

Those mares that are bred early in the year (typically during the first quarter) will often carry their foal for a longer period of time than anticipated.

2 In addition to these considerations, whether the foal is a colt or a filly is another aspect that may influence a mare’s gestational duration.

Body weight can also have an impact on gestation times; mares that are thinner have a tendency to bear their offspring for a longer amount of time than mares who are heavier.

Due to this, the mare will go into heat earlier in the year, which will result in the foal being born earlier in the year, which is typically a benefit for the owners and managers of performing breeds.

Gestation Stages

During their pregnancy, mares go through three trimesters, which are called trimesters. The first trimester begins with conception and is usually completed within two weeks of confirmation. 3 It is critical to have the mare examined by a veterinarian during the first trimester in order to safeguard her and her foal’s health throughout the whole pregnancy. When the foal is roughly 25 days old, the veterinarian can do an ultrasound to identify the foal’s heartbeat and establish that the foal is still alive.

  • If twins are discovered, the veterinarian may inquire as to whether the owner or management would be interested in having the second embryo removed in order to offer the surviving embryo a greater chance of survival.
  • A horse-like appearance may be recognized in the foal at three months by ultrasound testing; important characteristics can be identified, and the gender of the foal can be confirmed.
  • 3 In this period, the mare can begin receiving deworming and vaccination treatments.
  • The mare will begin to exhibit her abilities after six months.
  • At this point, it is necessary to increase the number of veterinarian visits once more.
  • As the mare approaches her due date, it is critical to maintain a pleasant and stress-free environment for her, avoiding any dramatic changes that might cause her to become worried.

Leading Up to Foaling

On average, the day of foaling should occur between days 326 and 354 of the calendar year. There are test kits available that some breeders use to assist them anticipate the day of foaling. These can be particularly beneficial if it is the mare’s first foal and the mare’s foaling procedure is unknown. 2 When it comes to the days leading up to delivery, the mare is likely to display signals that her body is preparing for childbirth. Her udder is likely to appear large, and she may even be dripping milk.

To ensure the mare’s comfort, a big stall with plenty of straw, fresh water, and hay should be supplied.

It is possible that she will get up and down a couple of times, but she will give birth while laying down.

2,3The amniotic sac will most likely be the first portion to be seen, followed by the head and legs of the developing baby. Once the amniotic sac is seen, it is usually just a matter of minutes until the horse is delivered. 3

Labor and Delivery

Approximately 85 percent of mares give birth at night, which is likely a survival strategy that permits the foal to be ready to run with the mother as soon as daylight appears. This will cause the mare to get agitated during the initial stage of labor. She may begin to kick at her stomach and engage in nesting behavior. A large number of mares sweat throughout the process of foaling, which is referred to as the mare “heating up.” Wrap the tail and thoroughly clean the perineal region. This period normally lasts around an hour and fifteen minutes.

  • The foal’s front hooves, nose, ears, and other features should be revealed as the foal grows.
  • This can be elicited by softly massaging the foal’s nostrils with a blunt item, such as a pencil.
  • 3 Other recommendations and warnings include cleaning any biologics with iodine before using them.
  • After delivery, some experts believe that a little amount of blood enters the foal through the umbilical artery, which is connected to the mother.
  • According to the literature, if the placenta does not discharge within three hours, it should be considered an emergency needing the care of a veterinarian.
  • The mare herself should not require any post-partum care in most cases.

Emergency Situations

The development of the amniotic sac as a “red bag” during the second stage of labor is one of the more prevalent complications during pregnancy and childbirth. The amnion (also known as the amniotic sac) is the first item to appear during a normal foaling. It is a white membrane that surrounds the foal. When the placenta separates from the uterine wall prematurely, blood will collect within the amnion, giving it a deep crimson look. This is an uncommon occurrence, but it does occur. This is a life-threatening emergency that might result in the foal’s death if not addressed immediately.

1 Eilts, B., et al., Equine Seasonal Cycle.

How Long Do Female Horses Stay Pregnant?

Johnson, Karen S. “How Long Are Female Horses Pregnant?” Animals – Mom.me, November 21, 2017, accessed October 7, 2018. Pregnant Mare: Ensure the health and well-being of the mare when she is pregnant. The American Association of Equine Practitioners published a statement on October 7, 2018.

About NexGen Pharmaceuticals

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  • It is also urged that our pharmacists establish excellent working connections with our veterinarians in order to provide better treatment for our animal patients.
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What to Expect When Your Mare is Expecting

The basics of equine reproduction and horse pregnancy include mating, the horse gestation period, and foaling, to name a few concepts. A mare (a female horse) may only give birth to one foal every calendar year. It is possible for a mare to start producing afoalat when she is 18 months old, but it is healthier if the mare is at least four years old since she will have grown to her maximum size by then. After her twenties, a mare may continue to have offspring into her thirties again.

Despite the fact that horses may mate and give birth without the assistance of a veterinarian, many issues can be avoided by having the stallion assessed before breeding and the mare checked and cared for appropriately during the pregnancy.

Average Gestation Period

When it comes to horses, the gestation period is normally between 330 and 345 days, or 11 months. A breeder’s ability to recognize if a mare is more likely to foal earlier or later than the norm is essential for success in the breeding industry. Ponies have a shorter gestation time than horses, which is typical. A natural environment is one in which the stallion will breed the mare throughout the summer months, and the foals will be born the following year, often during the spring and early summer months.

Mastiff mares are classified as seasonally polyestrous, which indicates that they go into heat (estrus) and are receptive to a stallion at regular intervals during the spring and summer.

Breeders that seek to modify the reproductive cycle in order to have foals born earlier in the year (as is routinely done in the Thoroughbred racehorse industry) will employ artificial illumination to replicate the longer days of spring and summer, rather than natural lighting.

This enables mares to be mated earlier in the year, resulting in a foal being born sooner the following year.

Checking For Pregnancy

Mares may not display any obvious indicators of pregnancy during the first three months of their pregnancy, other from the absence of an estrus cycle. After about two weeks have passed since the breeding event, an ultrasound can be used to confirm the pregnancy. Two to three months after conception, blood and urine tests can be performed to confirm the pregnancy. If the mare is six weeks into her pregnancy, a veterinarian may be able to personally feel the little embryo in her uterus via rectal palpation.

Horse twins are extremely unusual, yet they have the potential to cause the mare to miscarry.

As a result, it is frequently suggested to “pinch off” one embryo at a time.

It is not uncommon for a mare to miscarry her pregnancy, and it is advised to repeat an ultrasound, blood, or urine test after around three months.

Later Stages of Gestation

By the time the foal is three months old, it will be growing swiftly and beginning to resemble a miniature horse. After around six months, the mare may begin to show signs of pregnancy. Mares that have already given birth may exhibit signs of an enlarged stomach sooner than a virgin mare. With each passing month, the mare’s belly will continue to swell in anticipation of the foal’s due date in the spring of 2019. The mare’s udder will begin to grow and begin to produce sticky yellowish fluid around two weeks before the due date of the baby.

  • If the yellowish fluid is allowed to ferment, it will transform into the first milk or colostrum.
  • It is possible that her stomach will appear to lower as the foal aligns itself for delivery.
  • The mare will look restless shortly before giving birth, and she may paw the ground and examine her flanks (similar tocolic symptoms).
  • The mare may lie down and rise up several times, but she will give birth while lying down on the ground.
  • At this point, the foal is usually born within a few minutes of being born.
  • The mare or foal may sustain an injury or develop another problem during the birthing process, and this will require expert assistance.
  • If you have any reason to believe your pet is unwell, contact your veterinarian immediately.

Always consult your veterinarian for health-related inquiries, since they have evaluated your pet and are familiar with the pet’s medical history, and they can provide the most appropriate suggestions for your pet.

Gestation Calculator

This gestation calculator is intended solely for informational and amusement purposes. In no way should the dates that are computed be construed as a precise date for the birth of your child. This Foaling Date Estimator is based on a gestational age of 340 days. The actual foaling window should last around 10 days on average, plus or minus 10 days.

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Week 2 (2 weeks to 18 days)

The first ultrasound or palpation to detect pregnancy is called the first trimester. In order to Calculate

Week 4 – 1st Month

A second ultrasound or palpation is performed to detect the presence of a heartbeat. In order to Calculate

Week 12 – 3rd Month

Give all of the immunizations that have been advised for your location. Worm the mare’s horns In order to Calculate

FOURTH MONTH

In order to Calculate

Week 20 – 5th Month

In order to calculate the first equine rhinopneumonitis vaccination,

Week 28 – 7th Month

Calculate the effectiveness of the second equine rhinopneumonitis vaccination

Week 36 – 9th Month

In order to calculate the third equine rhinopneumonitis vaccination,

Week 44 – 11th Month

Give your mare all of the immunizations required for your area in order for her to generate antibodies in her colostrum. Worm the mare’s horns Begin keeping an eye out for indicators of early foaling, such as waxing. Disclaimer: It is the mare owner’s obligation to contact with their veterinarian regarding the health of their mare’s offspring. To Calculate This Calendar should only be used as a guideline.

Equine Reproduction From Conception to Birth

By Benjamin Espy, DVM, DACTE, DVM, DVM, DVM It requires money to reproduce a quaine: Feed, energy, labor, water bills, barns, staff, stud fees, transportation, and veterinary bills are just a few of the costs associated with running a farm. In order to get the most out of your reproductive dollar, you must first choose what you want to achieve with your program. Is it for the purpose of breeding performance horses, show horses, or leisure horses? Horse embryos are not more fragile than those of other species; rather, it is the fact that horses in general have low reproductive success that is the primary cause of this problem (ability to maintain a conceptus).

  • Stress, fever, uterine infections, hormonal imbalances, and the presence of twins are all factors that might induce a mare to spontaneously abort.
  • This is vital to understand since you may still influence the uterine environment up to this point.
  • If the embryo does not touch all sections of the uterus by the 16th day of pregnancy, the mare will reject the embryo and begin displaying indications of estrus, which will trigger the start of the next “heat” period.
  • Even as early as Day 26 of pregnancy, your veterinarian can perform a transrectal ultrasound to detect the presence of a heartbeat and establish the viability of the fetus.
  • In some parts of the world, veterinarians might use a sterile speculum to determine whether the cervix was tightly closed (showing pregnancy) or relaxed (indicating non-pregnancy) (indicating the beginning of another heat cycle).
  • The following are typical intervals for checking mares: From day 14 to day 16, the doctor confirms the original pregnancy and searches for twins.
  • Day 45 – an elective examination with no special reason to be performed because endometrial cups should have already developed by this point.

Day 60 – an elective examination that is performed for no specific cause, but has become increasingly significant since the introduction of fetal sexing procedures.

They are not prevalent in Quarter Horses, for example (five to 10 percent).

Because the twin should be 14 or 15 days old, this author likes to inspect mares on Day 15 or 16.

When checking for twins, it doesn’t matter what day of pregnancy you are on; it is much simpler to minimize a twin before they become fixed around Day 17 of pregnancy.

This has only been feasible because of the development of ultrasonic technology.

Usually, the smaller twin gets smothered or crushed.

Almost all twins (90 percent) are terminated during pregnancy.

In the uterus, there is only a limited amount of available space.

When it comes to the reproductive sector, fetal sexing is a game changer.

At the start of the 58th week of pregnancy, the genital tubercle will either migrate towards the tail in order to become the clitoris or move towards the prepuce, in order to become the penis.

Fetal sexing is almost difficult between days 80 and 90, as well as after day 140 of gestational age.

Athletic horses have the finest reproductive organ conformation and do not require as many calories to maintain their health as non-athletic horses.

Avoid relocating your horse more than is absolutely necessary.

Until a mare begins to produce milk, there is no need to supplement her food.

Attempting to have their medication “licensed for use on pregnant mares” is a costly endeavor for pharmaceutical corporations.

Horses may get all the activity they need on pasture, and a regular diet should keep them in good physical shape even if they are in the middle of a pregnancy.

During the winter months, keep an eye out for frozen automated water sources and ice-covered troughs.

Caslick’s procedures (in which the vulva is partially closed) should be opened or the patency of the vulvar lips should be checked thirty days before foaling takes place.

A vaccination given to the mare at the time of foaling does not PROTECT the foal because the colostrum does not have enough time to produce the appropriate antibodies before the foal is born.

Before the widespread use of ivermectin, ascarid impaction was a common cause of colic in foals and even death in some cases.

These are blood tests that are performed to determine whether or not the mare has become hypersensitive to the blood type of the foal.

Once it is determined that the mare is NI (+), the foal must be muzzled for the first 24 to 36 hours of its life, after which a colostrums donor must be found.

It is very normal for mares to carry a fetus for 320 to 380 days.

The most common question I get is “how long do I wait before I get worried.” Fescue toxicity is the most common thing that can cause prolonged gestation and reduced milk production, but by the due date, it is too late to restrict the fescue grazing of the mare since it usually requires 60 to 90 days of restricted grazing to make a difference.

  • I have never found a dead fetus at term after an owner has been concerned about a prolonged gestation.
  • There are many very experienced and well-educated veterinarians that regularly have experienced horrible side-effects and death of both the mare and foal.
  • In my opinion, convenience of the owner is a very poor reason to induce labor when considering the danger.
  • Foals can survive, but an ICU facility needs to be available with trained critical care veterinarians and support technicians.
  • Vaginal discharge or dripping milk may indicate impending abortion or foaling.
  • The udder will usually fill two to four weeks before foaling.
  • “Wax” will appear on the teats one to four days before foaling.

This can also be accomplished by water-hardness test strips.

Relaxed appearance of the vulva and movements in the flank “of the foal kicking” are inconclusive and should not be trusted.

“The fetus determines the day of delivery and the mare determines the hour.” Outdoor foaling arrangements have been used for centuries.

Disinfect floor between deliveries.

Shavings stick to eye and may cause corneal ulceration in the neonate.

This is thought to be a survival adaptation since the foal should be ready to run with the mare by daylight.

Kicks at belly.

May be mistaken for colic with continuous up and down movement and excessive urination.

“Mare is heating up.” Wrap the tail and thoroughly clean the perineal region.

When the chorioallantois breaks and you see a rush of fluid… Stage I is over.

It may be wise to start a stopwatch since many people will lose track of time due to the excitement of the moment.

Red bag appearance = EMERGENCY.

THIS MUST BE CUT AND THE FOAL DELIVERED IMMEDIATELY.

“breech delivery” Make sure foal is breathing.

Rub vigorously with a towel.

After delivery, some experts believe that a little amount of blood enters the foal through the umbilical artery, which is connected to the mother.

THIRD STAGE LABOR:If the placenta is not passed within three hours it should be considered an emergency.

(Placenta is also usually passed by this time as well.) * Foal should be actively consuming colostrums by THREE hours.

Meconium impaction is the most common form of colic in a newborn foal.

You can always have your veterinarian administer colostrum via a nasogastric tube.

Eighty to 85 percent of colostrum absorption is in the first eight to 12 hours of life.

Mares usually require no post-partum care.

Before you call your veterinarian about a sick mare that has recently had a foal, take her temperature BEFORE YOU ADMINISTER ANY DRUGS.

It should be under 101.5° F.

Mares are prone to colonic displacement after foaling and can also rupture their cecum or bladder DURING foaling.

These will usually rectify themselves with age and exercise and require no bandages or splints.

Contracted legs or variations in legs that hinder breastfeeding should be addressed with immediately by your veterinarian.

The use of stall restriction is not required for any reason other than if the foal has orthopedic concerns that necessitate the restriction of movement and exercise. In 2016, the original author reviewed the manuscript.

Expectant Mare: Assuring the Health and Well-Being of the Pregnant Mare

Benjamin Espy, DVM, DACTE, is a veterinarian and educator. It costs money to reproduce a quail. Feed, electricity, labor, water bills, barns, employees, stud fees, transportation, and veterinary bills are just a few of the costs associated with raising a horse. In order to get the most out of your reproductive dollar, you must first determine what you want to achieve with your pregnancy. It depends on whether you’re looking to breed for performance, show, or pleasure. Equines, in general, have poor reproductive performance, which is not due to the fact that their embryos are more fragile than those of other species (ability to maintain a conceptus).

Stress, fever, uterine infections, hormonal imbalances, and the presence of twins are all factors that can cause a mare to spontaneously abort.

This is critical to remember because you can still influence the uterine environment up until this point.

Unless the embryo contacts all of the uterine walls by day 16 of pregnancy, the mare will reject the embryo and begin showing signs of estrus, which will trigger the start of her next “heat cycle.” On or around Day 17, if the mare is able to recognize that the embryo is present, then the embryo will attach itself to the uterine wall.

  • A lot of people relied on the fact that most mares will come back into heat 17 to 20 days after breeding if they haven’t conceived prior to the widespread availability of ultrasound imaging technology.
  • When a mare’s uterus is bulging mechanically, experienced equine veterinarians can feel it by the 30th to 35th day of her pregnancy.
  • During the days 26 to 30, the heartbeat and the fact that the fetus is alive are confirmed.
  • The mare is unlikely to become pregnant again during the same breeding season if she aborts her pregnancy around Day 40-45 or later on.
  • In Quarter Horses, they are extremely uncommon (five to 10 percent).
  • This author prefers to check mares on Day 15 or 16, because the twin should be 14 or 15 days old at that point.
  • Even if you check for twins on any given day of gestation, it is much easier to reduce a twin before they become fixed at 17 weeks of pregnancy.

Since the invention of ultrasound, it has only been possible to do so.

Crush is usually reserved for the smaller twin.

Most twins are aborted (nearly all, 90 percent).

In the uterus, there is only a limited amount of space.

When it comes to the reproductive industry, fetal sexing is a game changer.

At the start of the 58th week of pregnancy, the genital tubercle will either migrate towards the tail in order to become the clitoris or migrate towards the prepuce in order to develop into the penis.

In between days 80 and 90, and after day 140, fetal sexing is nearly impossible.

Athletic horses have the best reproductive organ conformation and do not require as many calories to maintain their health as nonathletic horses do.

Avoid transporting your mare if it is not absolutely necessary to do so.

No nutritional supplements are required until the mare starts to produce milk.

Attempting to get a drug “approved for use on pregnant mares” is a costly endeavor for pharmaceutical companies.

Horses can get all the exercise they need on pasture, and a regular diet should keep them in good physical condition even if they are in the middle of their pregnancy.

During the winter months, keep an eye out for automatic water supplies and troughs that have become iced up.

Caslick’s procedures (when the vulva is sewn partially closed) should be opened or the patency of the vulvar lips should be checked thirty days before foaling takes place.

A vaccination given to the mare at the time of foaling does not PROTECT the foal because the colostrum does not have enough time to produce the appropriate antibodies before the mare gives birth.

Before the widespread use of ivermectin, ascarid impaction was a common cause of colic in foals and even death.

These are blood tests that are performed to determine whether or not the mare has become hypersensitive to the blood type of the foal’s parents.

If the mare tests positive for NI (+), the foal must be muzzled during the first 24 to 36 hours of its life, and a colostrum donor must be found for the foal.

It is very common for mares to carry a fetus for 320 to 380 days, depending on the breed.

The most frequently asked question I receive is “how long should I wait before becoming concerned.” A mare’s gestation can be prolonged and her milk production reduced by fescue toxicity, but it is usually too late to stop the mare from grazing on fescue by the due date, as it usually takes 60 to 90 days of restricted grazing for the mare to notice an improvement in her condition.

  1. I have never discovered a dead fetus at term in a situation where the owner was concerned about a prolonged pregnancy.
  2. Numerous very experienced and well-educated veterinarians have reported horrific side-effects and the death of both mare and foal on a regular basis, despite their best efforts.
  3. When the danger is taken into consideration, the owner’s convenience is a very poor justification for inducing labor in my opinion.
  4. Foals are capable of surviving, but an intensive care unit (ICU) facility with trained critical care veterinarians and support technicians must be available.
  5. The presence of vaginal discharge or dripping milk may indicate the onset of an abortion or the birth of a child.
  6. The udder will typically fill two to four weeks before the due date of the lamb.
  7. One to four days before foaling, “wax” will begin to appear on the teats.
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In addition to using water-hardness test strips, you can also use a digital meter.

Although the vulva appears to be in a relaxed state, movements in the flank that resemble “foal kicking” are inconclusive and should not be relied upon.

“The day of delivery is determined by the fetus, and the hour is determined by the mare.” Outdoor foaling arrangements have been used for hundreds of years in various climates.

In between deliveries, disinfect the floor.

Shavings become stuck in the eye and can cause corneal ulceration in a newborn child.

This is thought to be a survival adaptation, as the foal should be ready to run with the mare by the time the sun comes up in the morning.

Kicks in the stomach.

When there is constant up and down movement and profuse urine, it is possible to mistake it for colic.

“The battle for Mare is heating up.” Clean the perineal region after wrapping the tail.

You’ll know when the chorioallantois ruptures and there’s a surge of fluid.

LABOR AT THE SECOND STAGE: Usually between 15 and 25 minutes.

Expect to witness ongoing improvement in the front hooves, nose, ears, and other body parts.

AVOID CALLING A VETERINARY OR EVEN HANDING THE TELEPHONE AT THIS TIME.

Caudal presentation vs.

Check to see if the foal is breathing.

Using a cloth, rub the area vigorously.

After delivery, some experts believe that a little quantity of blood enters the foal through the umbilical artery, which is connected to the heart.

CHLORHEXADINEIODINE The third stage of labor should be considered an emergency if the placenta is not passed within three hours after delivery.

* Foal should be able to nurse in two hours.

* By THREE hours, the foal should be actively ingesting colostrums and milk.

The most frequent type of colic in a newborn foal is meconium impaction, which occurs when the foal passes meconium.

A nasogastric tube can be placed in the stomach and colostrum administered by your veterinarian.

Eighty-five percent to eighty-five percent of colostrum absorption occurs in the first eight to twelve hours after birth.

The majority of mares do not require post-partum care.

Before you contact your veterinarian about a sick mare who has recently given birth to a foal, check her temperature BEFORE you administer any medications to her.

The temperature should be less than 101.5° F.

Mares are susceptible to colonic displacement during foaling, and they can even rupture their cecum or bladder while in the process of foaling.

These will normally correct themselves with time and activity and will not require the use of bandages or splints in most cases.

Contracted legs or leg deviations that make it impossible to nurse your pet should be addressed by your veterinarian as soon as possible.

If the foal has orthopedic difficulties that necessitate restricting mobility and activity, stall restriction is not required for any other reason. In 2016, the original author conducted a review of the manuscript.

Mare Gestation Calculator

By Benjamin Espy, DVM, DACTE, DVM, DACTE It costs money to reproduce a quail: Farming expenses include: feed; electricity; labor; water bills; barns; employees; stud fees; transportation; and veterinary expenses. To get the most out of your reproductive dollar, you must first determine what you want to achieve with your program. Is it to breed horses for performance, show, or pleasure? Horse embryos are not more fragile than those of other species; rather, it is the fact that horses in general have poor reproductive performance that is the primary cause of this (ability to maintain a conceptus).

  • Stress, fever, uterine infections, hormone imbalances, and the presence of twins are all factors that can cause a mare to spontaneously abort.
  • This is important to remember because you can still manipulate the uterine environment up until this point.
  • Unless the embryo contacts all of the uterine walls by day 16 of pregnancy, the mare will reject the embryo and begin showing signs of estrus in order to begin the next “heat” cycle.
  • Transrectal ultrasound can be performed as early as Day 26 of pregnancy to visualize a heartbeat and confirm the viability of the fetus.
  • In some parts of the world, veterinarians could use a sterile speculum to determine whether the cervix was tightly closed (indicating pregnancy) or relaxed (indicating pregnancy) (indicating the beginning of another heat cycle).
  • Checking mares at the following intervals is recommended: From day 14 to day 16, the doctor confirms the initial pregnancy and checks for twins.
  • Day 45 – an elective examination with no specific reason to be performed because endometrial cups should have already formed by this point in the cycle.

Day 60 – an elective examination that is performed for no specific reason, but has become increasingly important since the introduction of fetal sexing techniques.

They are not common in Quarter horses, however (five to 10 percent).

This author prefers to check mares on Day 15 or 16 because the twin should be 14 or 15 days old at that time.

Even if you check for twins on any given day of gestation, it is much easier to reduce a twin before they become fixed at Day 17 of gestation.

Since the invention of ultrasound, it has only been possible to accomplish this.

Usually, the smaller twin is crushed.

Almost all twins are aborted (90 percent of them).

The uterus has a finite amount of space.

When it comes to the reproductive industry, fetal sexing is a game changer.

Starting on Day 58 of pregnancy, the genital tubercle will migrate towards the tail, where it will become the clitoris, or it will migrate towards the prepuce, where it will become the penis.

Fetal sexing is virtually impossible between days 80 and 90, as well as after day 140 of the pregnancy.

They have the ability to devote all of their energy to cycling properly and maintaining a pregnancy.

Ascertain that she is quarantined from any newcomers.

It is difficult for obese mares to expel a fetus.

It is common practice to use deworming medications such as Pyrantel Pamoate (Strongid ®), Ivermectin, and Fenbendazole (Panacur ®) on pregnant mares with no additional side effects than would be observed in a non-pregnant mare.

The increased production of fetal fluids and milk necessitates the provision of adequate water.

Herpesvirus (EHV-1) is a virus that can cause late-term abortion, and mares should be vaccinated against it at various stages of pregnancy, ideally at five, seven, and nine months.

All vaccinations should be administered to the mare to protect her against the diseases against which you would like the foal to be protected before the foal is born.

Ascarid larvae can be passed through the milk, so the mare should be dewormed with an ivermectin-based product.

Neonatal Isoerythrolysis (NI) tests are performed within two weeks of the baby’s birth.

Older mares are more susceptible to becoming hypersensitive to a foal’s blood type than younger ones.

When it comes to gestation, normal mares have a wide range.

In general, the most frequently cited gestational length is 330 days (11 months).

If it is acceptable to the owners, I will usually ultrasound the placenta or palpate the uterus for fetal motion.

Numerous extremely competent and well-educated veterinarians have reported horrific side-effects including the death of both mare and foal on a regular basis, and this is not uncommon.

When considering the hazard, I believe that the owner’s convenience is a very weak justification for inducing labor.

It is possible for foals to live, but they will require the assistance of an intensive care unit (ICU) facility staffed by critically ill veterinarians and other support staff.

Abortion or foetal birth may be indicated by vaginal discharge or leaking milk.

The udder will typically fill two to four weeks before the due date of the lambs’ conception.

One to four days before foaling, “wax” will form on the teats.

Water-hardness test strips can also be used to achieve this goal.

The relaxed look of the vulva as well as motions in the flank “of the foal kicking” are inconclusive and should not be taken as definitive and should be avoided.

A woman’s due date is determined by her fetus, whereas her due hour is determined by her horse.

Stalls for foaling should be at least 14 feet by 14 feet in size, if not more expansive.

It is advisable to use straw for a surface.

The majority of mares (85 percent) give birth at night during their first stage of labor.

Mare is under a lot of pressure right now.

It is possible to engage in nesting behavior; Constant up and down movement, as well as frequent urine, may be misinterpreted for colic.

It’s getting hot in there.” Wrap the tail and clean the perineum.

You’ll notice a surge of fluid as the chorioallantois ruptures.

LABOR AT THE SECOND STAGE There is a typical wait time between 15 and 25 minutes.

The front hooves, nose, ears, and other features will continue to improve.

I have no time to call a veterinarian or even pick up the phone.

When it comes to “breech delivery,” Caudal presentation wins out.

A blunt instrument placed in the nostrils will stimulate them.

The chord should not be severed when a foal is born, as it is with humans.

Using CHLORHEXADINEIODINE, disinfection should be carried out.

There are three rules in this game: one, two, three.

Within TWO hours, the foal should be nursing.

* It should take THREE hours for the foal to begin to actively consume colostrum.

The most frequent type of colic in a newborn foal is meconium impaction, which occurs when the foal passes stool.

A nasogastric tube can be placed in your pet’s stomach by your veterinarian if necessary.

Colostrum absorption occurs in the first eight to twelve hours of life, with 80 to 85 percent occurring in the first eight to twelve hours of life.

Pregnancy care for mares is generally minimal.

Take her temperature BEFORE administering any medications to a sick mare who has recently given birth to a foal before calling your doctor.

If it is below 101.5 degrees Fahrenheit, it is OK.

In addition to colonic displacement following foaling, mares are also susceptible to rupturing either their cecum or bladder during foaling.

There is no need for bandages or splints in most cases because they will correct themselves with time and activity.

Veterinary attention should be sought right once for contracted legs or limb abnormalities that make breastfeeding impossible.

Stall limitation is not required for any reason other than if the foal has orthopedic difficulties that need restricting mobility and activity. In 2016, the original author conducted a review of the work.

How long is a horse pregnant for?

By Benjamin Espy, DVM, DACTE Quine reproduction is an expensive endeavor: Feed, electricity, labor, water bills, barns, employees, stud fees, transportation, and veterinary bills are all expenses. To make the most of your reproductive dollar, you must first determine what you want to achieve with your program. Is it for the purpose of breeding performance, show, or pleasure horses? Horse embryos are not more fragile than those of other species; rather, horses in general have poor reproductive performance, which contributes to this (ability to maintain a conceptus).

  • Stress, fever, uterine infections, hormonal abnormalities, and the presence of twins are all factors that can cause a mare to spontaneously abort.
  • This is critical to remember because you can still manipulate the uterine environment up until this point.
  • If the embryo does not touch all portions of the uterus by day 16 of pregnancy, the mare will reject the embryo and begin showing signs of estrus in order to begin the next “heat” cycle.
  • Your veterinarian can perform a transrectal ultrasound as early as Day 26 of pregnancy to visualize a heartbeat and confirm the viability of the fetus.
  • In some areas, veterinarians could use a sterile speculum to determine whether the cervix was tightly closed (indicating pregnancy) or relaxed (indicating non-pregnancy) (indicating the beginning of another heat cycle).
  • Typical intervals for checking mares are as follows: Day 14 to 16 – confirms initial pregnancy and searches for twins.
  • Day 45 – an elective examination with no specific reason, as endometrial cups should have formed by this point.

Day 60 – an elective examination that is performed for no specific reason, but has become increasingly important since the introduction of fetal sexing.

They are not common in Quarter horses (five to 10 percent).

This author prefers to check mares on Day 15 or 16 because the twin should be 14 or 15 days old at that point.

Regardless of what day of pregnancy you check for twins, it is much easier to reduce a twin before they become fixed at Day 17 of pregnancy.

This has only been possible since the invention of ultrasound technology.

Typically, the smaller twin is crushed.

Almost all (90 percent) of twins are aborted.

There is only so much space in the uterus.

Fetal sexing is a revolution in the reproductive industry that had been perfected in the cattle industry but had only recently become available in the equine industry (approximately 10 years ago).

You can have fetal sex between Days 60 and 70, or between Days 110 and 140.

BEING A MOTHER IS AN ATHLETIC EVENT Athletic horses have the best reproductive organ conformation and do not require calorie restriction in order to survive.

Avoid transporting your mare if it is not absolutely necessary.

There is no need to supplement a mare’s diet until she begins to produce milk.

Drug companies rarely spend the time and money necessary to have their product “approved for use on pregnant mares.” The commonly used deworming medications Pyrantel Pamoate (Strongid ®), Ivermectin, and fenbendazole (Panacur ®) are all safe to use on pregnant mares and have no more side-effects than they would have on a non-pregnant mare.

  • Because of the increased production of fetal fluids and milk, adequate water supply is essential.
  • Because the herpesvirus (EHV-1) can induce late-term abortion, mares should be vaccinated for this illness at various stages of pregnancy, particularly at five, seven, and nine months.
  • All immunizations should be delivered to the mare to protect her against the illnesses against which you would like the foal to be protected.
  • Ascarid larvae can be transferred through the milk, thus the mare should be dewormed with an ivermectin-containing treatment.
  • Neonatal Isoerythrolysis (NI) screening should be performed within two weeks of the birth of the baby.
  • Older mares are more susceptible to being hypersensitive to a foal’s blood type.
  • Normal mares have a wide variety of gestational ages to choose from.

In general, the most generally quoted gestational duration is 330 days (11 months).

If it is acceptable to the owners, I will generally scan the placenta or palpate the uterus for fetal activity.

In spite of the fact that induction of labor is feasible and has been done in research or controlled circumstances, I NEVER endorse it.

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Unless the mare’s health is in peril, there is never a good cause to induce an abortion.

I worked in Lexington for two years during the time of Mare Reproductive Loss Syndrome (MRLS), and I never observed a fetus that benefitted from induced foaling.

Mares that spontaneously abort must be refrigerated or stored for necropsy, histopathology, or for inspection by your veterinarian if the membranes or fetus are removed.

In the majority of cases, a mare will abort despite the fact that she shows no clinical indications of illness herself.

Teats will often distend four to six days before the birth of the baby.

There are commercial tests available that can detect an increase in calcium levels in udder secretions.

Calcium levels often rise 24 to 48 hours before the onset of labor.

Reduce the amount of stress and supervision required because the mare has demonstrated a degree of capacity to regulate her own labor.

Using outdoor foaling arrangements has been a tradition for hundreds of years.

Clean the floor in between delivery.

Shavings adhere to the eye and can cause corneal ulcers in newborns.

This is believed to be a survival adaption since the foal should be ready to go with the mare by the time the sun comes up.

Kicks at the stomach.

Continuous up and down movement, as well as frequent urine, may be misinterpreted for colic.

“The sea is getting hot.” Wrap the tail and clean the perineal region.

When the chorioallantois ruptures and a surge of fluid is seen.

LABOR IN THE SECOND STAGE: Typically, 15 to 25 minutes are required.

Expect to witness continual improvement in the front hooves, nose, ears, and other body parts.

AVOID CALLING A VETERINARY OR EVEN HANDING THE TELEPHONE.

Caudal presentation vs.

Check to see if the foal is breathing.

With a cloth, rub the area vigorously.

Some studies assume that a small amount of blood enters the foal’s circulation after delivery through the umbilical artery.

The third stage of labor should be considered an emergency if the placenta does not pass within three hours.

* Foal should be able to nurse in TWO hours.

Foals should be given an enema (or two) to help in the transit of the meconium through their systems.

If the mare’s colostrum is not violently devoured by the foal, it can be harvested.

If you are milking the mare, you should make an effort to obtain 16 to 32 ounces of colostrum from the udder each time.

Get into the habit of drawing blood for an IgG test six to eight hours after foaling, and you should have enough IgG to test for, as well as 3 to 4 hours left over to feed colostrum via a nasogastric tube if necessary.

It may be necessary to provide phenylbutazone (Bute ®) or flunixin meglamine (Banamine ®) to them in order to minimize swelling in their vulva or rectum.

Bute ® and Banamine ® are anti-fever medications, therefore take a rectal temperature before attempting to artificially lower the mare’s temperature.

Immediately after foaling, a retained placenta or endometritis is prevalent in feverish mares.

Many foals are born with fetlocks that are so weak that they are literally touching the ground.

Thoroughbreds are prone to fractured ribs, although other breeds are not.

The majority of foals are meant to be sent out with the mother the morning after they are born. Stall limitation is not essential for any reason other than if the foal has orthopedic difficulties that need restricting mobility and activity. In 2016, the original author reviewed the work.

What is foaling?

Foaling is the term used to describe a female horse (a mare) who is about to give birth. It goes without saying that the end product of the entire procedure is a foal. So, just to be clear, delivery day equals due date equals foaling day, and Yes, our mare gestation calculator is capable of calculating all of them!

How to use the mare gestation calculator?

No horse gestation calculator has ever been as simple as this one! Enter theMating date (the date of a successful breeding attempt) and you will obtain the whole set of results, which will include:

  • The anticipated start date, as well as its complete range
  • Current gestational day
  • Also, the day of the week in which the projected labor day falls.

Essentially, our mare due date calculator helps you to keep track of all of your mare’s pregnancy’s critical dates with great precision! You must remember, however, that each pregnancy is unique, and some mares may foal successfully before or beyond the projected dates, depending on the circumstances.

How to calculate foaling date with horse pregnancy length?

Using a few simple formulae, you can easily reproduce the findings of our horse gestation duration calculator, for example:

  1. The following is the projected delivery date: Foaling is equal to MatingDate + 338338 days, which equals 11 months. For a complete list of probable foaling days, see below: The earliest feasible foaling date is equal to MatingDate + 331 MatingDate + 346 is the latest feasible foaling date.

The reason we added an extra day to our calculations is likely beyond your comprehension. This is due to the fact that ovulation in horses, like in humans, can linger for up to 24 hours, allowing for the fertilization of the egg to take place later. We can get a little bit more exact results from our mare gestation calculator by using this easy approach.

How far along is my mare?

If you know the date of your mare’s breeding (mating), determining the day of her pregnancy is a simple matter of calculation. You may use the same calculation that we used in our horse due date calculator to calculate your horse’s due date: Pregnancy day equals the current date minus the mating date.

FAQ

During the spring and summer months — precisely, from May to August — horses are in season for breeding. These are the months when the likelihood of becoming pregnant is at its maximum level.

How do I calculate how far along my mare is?

Follow these steps to determine how far along your mare is in her pregnancy:

  1. Take the current date as an example
  2. Make a reservation for a date
  3. Subtract the date of the mating from the present date: The current date is the mate-finding date. You now have an idea of how long your horse’s pregnancy is currently lasting!
  4. Keep in mind that the average length of a horse’s pregnancy is 338 days.

Dr. Ucja Zaborowska is a doctoral candidate in medicine.

How Long Is a Horse Pregnant? (Symptoms & Stages)

In humans, pregnancy is always considered to be a fragile state, and there is no substantial difference between humans and animals. When it comes to horses, such an attitude is based on mares’ comparatively poor reproductive performance when compared to the performance of other domestic animals in the same environment. As a responsible owner, you can ensure that your mare’s pregnancy progresses as smoothly as possible by paying close attention to her and providing her with extra care. However, regardless of whether you produce these gorgeous creatures for pleasure or for show, the most important issue to ask is how long a horse may be pregnant for.

The Ideal Age for Breeding Mares

When a mare is 18 months old, she has the potential to get pregnant. The best age for breeding is still when the animal reaches the age of at least four years.

Premature breeding can have negative repercussions for a mare’s health and well-being. As a result, it is preferable to wait until it has reached full maturity. Furthermore, there is no necessity to begin breeding too early, as female horses can get pregnant until they are in their late twenties.

Seasonal Polyestrous

The mare is a seasonal polyestrous mare, which means she has two periods each year. Although it may appear confusing, it simply implies that mares go into heat (estrus) only from the beginning of spring through the end of summer or the beginning of October. During this time, horses are sexually receptive and fertile every three weeks, and they are able to reproduce. The fact that the seasons have an effect on pregnancy makes tracking these cycles essential since it has an impact on the intended breeding.

Those who are conceived during the spring and summer, on the other hand, nearly generally have shorter pregnancies.

The thinner and smaller mare will be able to bear the foal for a longer period of time than the bigger mare.

How to get the mare into heat earlier and the foals to be born earlier in the year is accomplished in this manner.

Pregnancy Check

The lack of estrus is the first symptom that a woman is pregnant. The chances of your mare becoming pregnant are high if you have bred her and she has not gone into estrus within three weeks of breeding. You should be aware, however, that certain mares might display indications of estrus even after pregnancy, so you must use caution when breeding them. As early as two weeks after breeding, you may call a veterinarian to have your mare’s pregnancy confirmed by ultrasound. This is one of the most reliable methods.

Following conception, a blood and urine test are performed to determine whether or not a woman is pregnant.

Please keep in mind that because some mares do not exhibit any indications of pregnancy, it is conceivable that the owner will only discover the pregnancy a few hours before the scheduled delivery.

False pregnancies in horses, on the other hand, are prevalent, so you should pay close attention to your mare’s behavior.

Horse Pregnancy

The average length of a mare’s pregnancy is 320 to 380 days (10 to 11 months). As a result, a mare can only have one pregnancy each year due to these factors. It will go through three trimesters in all, about.

The first trimester

It all starts with fertilization, which may be confirmed by a veterinarian after two weeks.

An ultrasound scan is performed around 26 days later, and the veterinarian can hear the foal’s heartbeat. He will also be able to tell you whether or not your horse is carrying twins. By the third month, the veterinarian will be able to confirm the gender of the foal.

The second trimester

It begins somewhere around day 114. As the foal grows fast during this stage, the mare will want more food and larger amounts in order to keep up with the growing foal.

The third trimester

Finally, this period will begin roughly 226 days after the conception of the child. It is critical to regularly check your mare’s health and to discontinue training her after the seventh month of her life. As the day of your horse’s birth approaches, it is critical that you avoid making any big changes because this can be stressful and upsetting for your horse.

Pregnant Horse Care

Many parts of your mare’s care will stay the same as they were before she became pregnant. Light physical exercise is recommended during the first month following conception since this phase is critical for the foal’s survival. Aside from that, mild training is one of the most effective methods of preparing your mare for birth. You can even ride your horse up until the sixth month of your pregnancy if you want to. You can resume this exercise as soon as your body has recovered after giving delivery.

During this time, most foals acquire a couple pounds every day on average.

During pregnancy, keep in mind that the mare is more susceptible to illness than usual.

Twin Pregnancy

In rare instances, a mare can get pregnant with twins, however the majority of the twins’ foals will not survive owing to difficulties. Once the veterinarian has determined that your mare is carrying twins, he or she can remove one of the embryos to give the other a better chance of survival. During the first two months of her pregnancy, a mare with twins has a 95 percent probability of rejecting one or both of the embryos she has produced. Delaying the next pregnancy by waiting for this to happen naturally is not a smart idea since it will prolong the next pregnancy.

If this is not done, foals will most likely be delivered early and with health problems.

Premature and Overdue Foal

It is unlikely that the foal will survive if it is born before the 300-day mark. The animal’s respiratory system, on the other hand, is not fully developed and will remain dysfunctional. Placentitis is a condition that might affect the mare from time to time. It results in a shortened pregnancy and a foal that is undeveloped and hence unlikely to survive. Veterinary hospitals frequently treat foals born between 300 and 320 days old that require neonatal critical care. The good news is that it will almost certainly live if you give high-quality upkeep.

In most cases, there will be no issues, save that it may be less than anticipated.

It is widespread in rural areas where mares graze on fescue pasture or are given fescue hay, as well as in certain urban areas.

As a result, it is suggested that it be removed from the mare’s diet two to three months before she gives birth to her foal.

Occasionally, a veterinarian may be required to induce labor in the case of a protracted pregnancy when a mare’s life is in imminent risk. Otherwise, most veterinarians would not perform this treatment since it poses a threat to the foal’s life and health, according to the ASPCA.

Labour and Delivery

In the wild, mares give birth to their foals at night in greater than 85 percent of cases. The explanation for this is most likely due to the amount of time a foal need to adjust to new settings until the morning. Be prepared for the mare to get disturbed during the initial stage of labor, refusing food and drink, walking in a circle, and alternatively lying down and standing up, among other things. There are three stages to the delivery process:

Labors

The mare’s tail should be wrapped to keep the perineal region clean. This is the most prolonged phase of the storm and can run anywhere from 30 minutes to six hours in duration. For older mares, the tail is normally shorter. This period will be completed after the mare’s water breaks.

Fetus expulsion

The second phase of labor is shorter than the first, however an upset mare might cause the delivery to be delayed for a brief period of time. As a result, you should keep noise levels to a bare minimum and avoid upsetting it. As soon as the contractions begin, the mare has the option of standing or lying down. When the birthing process begins, it will, however, be on its side. It takes around an hour for a firstborn mare to remove the fetus, but an older mare takes approximately 12 to 18 minutes.

Afterbirth placenta delivering

While blood is still flowing via the umbilical cord, the mare will lie on her side for an additional 15 to 20 minutes following the delivery of her foal. As a result, it is suggested that you do not trim it immediately after giving birth. It is recommended that you avoid approaching the foal for the following several hours since they have a strong protective instinct and can be aggressive towards people if approached. After one hour, the foal should stand up and begin sucking. After two hours, the foal should begin sucking.

Veterinary assistance is required if the placenta does not pass within three hours.

Summary

A horse can be pregnant for up to eleven months in most cases. An otherwise healthy foal may be born to a mare before or after the scheduled delivery date. Under order to achieve a risk-free delivery and a healthy foal in such circumstances, it is important to give your mare with the right care.

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