Dontworrybeappy
Well-Known Member
Abbie (whom some of you may remember was born at 292 days gestation - with a single hand-breeding date as guide) is now at 369 days along in her 2nd pregnancy (her first went about 330 days). She is a young mare, healthy, no signs of distress (except in her owner!
)
Live foal palpated by vet at 343 days along. Hand bred by stallion owner and delivered here 2 days later, we have had no stallion escapes here, and no stallion near the mare's corral at all.
How long have you had a MINI mare go.... and still have a healthy, live foal?
I've read the following, but I'm going to assume these are mainly regular (large) horse breeds and not minis!
"Here are some important facts to consider about gestational lengths:
[*]It should be noted that considerably shorter Miniature Horse pregnancies (~280 days) have resulted in healthy foals.
[*]Foals born after 300 days but prior to 320 days are at risk of being born in a premature condition.
[*]The average range of gestation is between 320 and 370 days.
[*]Foaling days after 370 days of gestation are not uncommon and usually do not represent a problem.
Some other important points for consideration:
It should be noted that if the mare is displaying severe signs of discomfort, she should be evaluated by a veterinarian. "Severe signs of discomfort" are not represented by a mare looking miserable, but rather by colic-like symptoms or extreme depression (no interest in feed, turnout, other animals etc.).
Induction of foaling simply because it is convenient for the mare owner, manager or veterinarian and not because of the presence of a medical problem with the foal or mare should be a crime that carries a mandatory life sentence! Induction of foaling results in a higher-than-normal number of dystocias (presentation problems), premature foals, and premature placental separations ("red bag" deliveries) than are seen with regular presentations. Do not induce foaling except in the face of a very clearly defined medical need, and only under strict veterinary supervision.
It is also important to note that while mammary gland development may be indicative of impending foaling (note that "waxing" is not a reliable indicator across the board, and other methods of prediction such as the one described in the article available by clicking here should be used), an absence of mammary development when in concert with prolonged gestation may be indicative of a problem with endophyte-infected fescue toxicity, and immediate veterinary involvement should be sought, as drug therapy (Domperidone) and other protocols (removal of the animal from the endophyte source) can be used to reverse the symptoms. Just to confuse the issue however, some mares do not show mammary development prior to foaling, and yet have not been exposed to endophyte-infected fescue!
Horses are not humans! They have different needs, and while the gestational period for humans is quite closely defined, there is a wide range of "normal" for the equine! Consequently, if you are reading this as a result of being concerned about your mares pregnancy duration, while we certainly encourage you to consult with your veterinarian to be on the safe side, you are, in all probability, merely losing sleep and worrying for no reason!"
Live foal palpated by vet at 343 days along. Hand bred by stallion owner and delivered here 2 days later, we have had no stallion escapes here, and no stallion near the mare's corral at all.
How long have you had a MINI mare go.... and still have a healthy, live foal?
I've read the following, but I'm going to assume these are mainly regular (large) horse breeds and not minis!
"Here are some important facts to consider about gestational lengths:
- Foals born prior to 300 days are unlikely to be viable.
Their lungs are not fully developed and they will not be able to breath.
Unlike similar premature situations with humans, the use of a surfactant in the foal to assist with development and breathing has not proven succesful. - Note that this is referencing a normal, healthy pregnancy. Mares that manage to support a pregnancy threatened by something such as placentitis to term may have shorter-than-"normal" pregnancy duration, and yet still present a viable foal. It is unusual that the gestational period will be lower than 300 days in this case, but it can happen. This is thought to be as a result of elevated cortisol levels - due to fetal stress - causing accelerated fetal development.
[*]It should be noted that considerably shorter Miniature Horse pregnancies (~280 days) have resulted in healthy foals.
[*]Foals born after 300 days but prior to 320 days are at risk of being born in a premature condition.
Premature foals will require neonatal intensive care;- The closer to 300 days the foaling, the more intensive the needed care will be;
- Foals born from mares that suffered from infectious placentitis during pregnancy may be born between days 300 and 320 and yet not show prematurity as there is an accelerated developmental rate in utero with many of these foals;
[*]The average range of gestation is between 320 and 370 days.
- 340 or 341 days are accepted as the most common foaling days, but they are not a "due date", merely an average of the average.
[*]Foaling days after 370 days of gestation are not uncommon and usually do not represent a problem.
The longest live foal delivery on record is 445 days!- Foals born after a prolonged gestation are often small in size as a result of a delayed uterine development period, and rarely present foaling problems as a result of "having grown too big".
Some other important points for consideration:
It should be noted that if the mare is displaying severe signs of discomfort, she should be evaluated by a veterinarian. "Severe signs of discomfort" are not represented by a mare looking miserable, but rather by colic-like symptoms or extreme depression (no interest in feed, turnout, other animals etc.).
Induction of foaling simply because it is convenient for the mare owner, manager or veterinarian and not because of the presence of a medical problem with the foal or mare should be a crime that carries a mandatory life sentence! Induction of foaling results in a higher-than-normal number of dystocias (presentation problems), premature foals, and premature placental separations ("red bag" deliveries) than are seen with regular presentations. Do not induce foaling except in the face of a very clearly defined medical need, and only under strict veterinary supervision.
It is also important to note that while mammary gland development may be indicative of impending foaling (note that "waxing" is not a reliable indicator across the board, and other methods of prediction such as the one described in the article available by clicking here should be used), an absence of mammary development when in concert with prolonged gestation may be indicative of a problem with endophyte-infected fescue toxicity, and immediate veterinary involvement should be sought, as drug therapy (Domperidone) and other protocols (removal of the animal from the endophyte source) can be used to reverse the symptoms. Just to confuse the issue however, some mares do not show mammary development prior to foaling, and yet have not been exposed to endophyte-infected fescue!
Horses are not humans! They have different needs, and while the gestational period for humans is quite closely defined, there is a wide range of "normal" for the equine! Consequently, if you are reading this as a result of being concerned about your mares pregnancy duration, while we certainly encourage you to consult with your veterinarian to be on the safe side, you are, in all probability, merely losing sleep and worrying for no reason!"
