Mares in Heat: What’s Normal, What’s Not?
Karen Hopper Usher
May 4, 2025
Mares get a bad rap for recalcitrant estrous behavior, but hormones and tumors could also be at play.
Mares get a bad rap for recalcitrant estrous behavior, but hormones and tumors could also be at play.
Post-foaling, this type of colic can be life-threatening to broodmares and their foals.
Reserve antibiotics in equine reproduction for proven infections, not routine use. Vets should utilize alternative treatments to reduce AMR risk when possible.
Review how CEM spreads between horses, the most recent outbreaks, and biosecurity measures to prevent outbreaks in breeding and other horses.
Watch for these 10 emergencies in the hours after a mare foals. Immediate action could potentially save the mare’s and/or foal’s life.
Discover why this common pasture grass is good for grazing but bad for broodmares.
Learn how to adjust your mare’s diet to support a healthy pregnancy, ensure adequate milk production, and maintain her body condition during this critical time.
Learn how to tailor your mare and foal’s feeding program from late pregnancy to weaning with expert guidance.
Proteins and the amino acids that form them play important roles in the horse’s body, from muscle building and function to neurotransmission and hormone synthesis.
Researchers believe PPID (formerly called equine Cushing’s disease) might have negative effects on mare fertility but need more research to understand why.
Testing asymptomatic horses for EHV-1 at equestrian events is crucial for early detection and preventing potential outbreaks.
Researchers are currently working to develop an RNA vaccine for EHV-1 and -4. Here’s what they know so far.
The new vaccine in development paves the way for more effective immunization against the diarrhea-inducing virus in equine neonates.
Learn about new applications for biologic therapies to treat horses’ infertility, wounds, ligament injuries, and eye issues.
When will your mare foal? Learn the signs of impending foaling and what prognostic tools can help.
How to decide if your older mare is a good candidate for breeding and improve her chances of success.
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