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The length of pregnancy would not really be affected by the number of foals, all horses tend to carry a foal or foals for about 11 months or roughly 330 to 340 days.

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Q: How long does a mare carry twin foals for?
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How many babies can a horse have in her lifetime?

A female horse, referred to as a mare, can have an average of 1-3 foals per pregnancy. Most mares are able to have foals up to the age of 20-25 years old, so a mare can have up to around 30 foals in her lifetime. The following is a list of the things that can affect how many foals a mare can have in her lifetime:Age As mentioned, mares usually have foals up to the age of 20-25 years old. Health If a mare is in poor health, she may not be able to bear as many foals as a mare in good health. Genetics Certain breeds of horses may be predisposed to having more or fewer foals. Environment A mare's environment can affect her ability to bear foals, as certain conditions may make it more difficult for her to conceive or carry a pregnancy to term. In summary, a mare can have up to around 30 foals in her lifetime, although this can vary depending on age, health, genetics, and environment.


What happens if a two stallions breed the same mare?

In a simliar time period, like two days difference, there is a higher chance of the mare becoming pregnant, but she will probably only have one foal as twin foals are rare.


How many offspring a are produced at a time?

Mares are made to give birth to only one foal at a time. Rarely a mare will deliver twin foals that are able to survive, but this is truly a rarity.


How many offspring in horses are produced at a time?

Mares are made to give birth to only one foal at a time. Rarely a mare will deliver twin foals that are able to survive, but this is truly a rarity.


Why do twin foals die?

Twin foals have a high risk of mortality due to competition for nutrients in the womb, leading to malnutrition or underdevelopment. Additionally, the birthing process for twins can be more complicated, increasing the risk of birth-related injuries or complications that can result in death.


How many foals can a Clydesdale horse have at one time?

Horses usually produce only one live foal with occasional instances where two live twins are born. Twin pregnancies in horses can be very problematic and while draft horses (like the Clydesdale) and Standardbred horses seem to be more successful at producing live twins they may require significant veterinary care in order to survive.


Why is it bad for horses to have twins?

While horses can successfully have viable twin foals the actual success rate is quite low. Typcially, a mare that has produced twins will lose one at an earily stage of development and the breeder will be unaware of the fact that the pregnancy was ever one involving twins. Most commercial breeders perform ultrasounds at 14-16 days post breeding to determine if a mare has twins and the smaller conceptus is crushed to insure the mare will carry one foal to term. Many twin pregnancies will reduce to a singleton pregnancy when the two conceptuses implant close together. Twins that survive much past the early embryonic stages can develop several ways. 1) The twins share an equal amount of uterine space and have placentas that are approximately the same size. Each placenta has a non-villis side that has no attachment to the uterus and this decreases the nutrient intake of both foals. While these types of twins may survive to birth, they will often be smaller, premature or (if full term) dismature. One or both may require neonatal care for several days to weeks. Treatment may be quite expensive. 2) The twins have unequal size placentas. This usually results in one fetus "starving off" when it's large enough that the small placenta cannot provide adequate nutrition. One fetus dies and either mummifies or decomposes. Decomposition of one fetus usually causes the death of the other fetus and subsequent abortion of the mare. Mummification of the smaller foal can result in a viable foal. 3) The twins are identical and share a single placenta. Foals of this type are extremely rare and both are smaller than a normal singleton foal. While foals may be born alive they may have many of the same deficits and often the smaller foal has considerable health issues. One or more may require considerable veterinary care. Twin births often result in dystocia (abnormal foaling position) which may require a veterinarian at the foaling or surgical intervention, resulting in the loss of the mare, one or more foals or all three. A large mare may be able to carry twins to full term but they may be too small to nurse their own dam and the mare may need to be milked and the foals fed until they are large enough to nurse on their own. Last but not least, the mare may need a full breeding to recover as not only the production of twins but their subsequent nutritional needs will affect her ability to get back in foal. Based on the low probability that a mare can carry twins to term, or potential economic cost or emotional cost of a lost, mare, foal, foals or all three there is no reason to intentionally allow a twin pregnancy to continue if it can be avoided.


Can a mare give birth to more than one foal a year?

Yes, a horse can have twins. It is rare, and dangerous for both the mare and the foals. A mare pregnant with twins will usually abort both fetuses at about five to eight months. very rarely but if it does happen 1 of the foals most likely will die also there is only a one in 10000 chance that there will be twins :-)) Added: in most cases a vet will recommend to abort one of the twins to save the life of the other. Occasionally equine twins are born without issues, but it is very rare. Both foals can be healthy at birth, and that's common when a mare has twins. If a mare is fed too much while in foal with twins the foals will grow too big and she will lose them and/or die Also if both are born healthy one will have to be bottle fed as the mare doesn't have enough milk for both. It can also occur mare has triples, but it happened only few times (no more then 5) in the world. None of them ended good. ^^


Can a mare abort one twin and the other survives?

This leads me to the question of whether a horse can abort her offspring. Be careful how you phrase your sentences, because here your subject is "horse" and the verbs are "be" and "abort." Who is doing the aborting? If it certainly isn't the horse then you need to include the second subject. Remember your English teachers every now and then. They get paid to do their job for a reason. ****Whoever answered this question is very rude and ironically doesn't know what he or she is talking about... The term "abort" is commonly used to refer to a horse having a miscarriage. Yes, it would be the mare's body "doing" the aborting. There was nothing wrong with this question. And, yes, although very very unlikely one twin can survive.


Is there one placenta for twin horses one for each horse?

Twin births for horses are rare, especially when both foals are born alive. In this case there should be two placentas.


Are stiletto knives illegal to carry in Minnesota?

yes as long as its under 5 in ( 4in in the twin cities ) and it cant be automatic


Can a horse have quadruplets?

It is possible, but the odds of all three surviving and/or being in good health are next to nothing. As the person above me said, it is possible for a mare to give birth to triplet foals. However, the odds of just twin foals being born is 10,000 to 1, so I imagine the chances of healthy foal triplets is slim to none. If it did happen, it'd be a rare occurrence. You see, a mare's uterus can naturally only support one foal in an eleven month gestation period. Usually, when a horse owner has an ultrasound on their mare they'll ask to abort the fetuses, leaving only one to be born in order to save their mare and one of the fetuses. My advice, if you think your horse is having triplets is to get an ultrasound, and then make your own decision of what to do.The chances of a horse having triplets is very slim, but it is very musch possible. I know this, because a mare once gave birth to triplets and after the third foal's birth, she died. But all of the triplets are alive and healthy. I know this because I happen to own all three horses. Their names are, Storm Feathers, Starlight, and Saja.