Heat Cycle Review. Before talking about starting and stopping a mare's heat cycle, it's important to understand how the cycle works normally. In early spring, as days get longer and temperatures ...

Breeders always appreciate ways to help improve their mares' chances of becoming pregnant, and one way veterinarians can help is by administering prostaglandins. At the 2013 Society for ...

When a mare is in heat, there is estrogen but no progesterone. That is why she shows signs of heat, such as teasing into a stallion, squatting, and urinating for a few days.

One study evaluating 2,003 Thoroughbred mares showed that per-cycle pregnancy rates continued to improve, and embryonic loss ...

Nearly as important as a mare having a foal is getting her bred back to have next year’s baby. Breeding on foal heat is an old management strategy aimed at doing just that. It is the first heat ...

Most mares show regular oestrous cycles only for a limited time period in spring and summer. With a pregnancy of 11 months, most foals are born at a time when temperature and nutrient supply would ...