Breeding

Lavender Foal Syndrome (LFS), or coat colour dilution lethal (CCDL), is a rare and lethal disorder in Arabian horses and crossbreeds. Foals with LFS are born with neurological problems and a lightened coat colour. Lavender Foal Syndrome is a genetic...

Mare reproductive loss syndrome (MRLS) is an enigmatic condition first described in Kentucky in 2001, when an estimated 3,500 foals were either aborted, stillborn, or died shortly after birth. Research revealed that abortions and foal death was closely associated with...

Endometritis is a condition involving inflammation of the uterine lining, and is a very common cause of infertility in broodmares. Mares with endometritis develop fibrosis and inflammation that prevent embryonic development, resulting in failure to conceive or early embryonic loss....

Placentitis is a common cause of foal loss and neonatal sepsis in horses. Mares with multiple previous foals, older mares, and mares with poor perineal conformation are most at risk of developing placentitis. Most cases of placentitis arise from bacteria...

Twin pregnancies in horses are common but carry significant risks for both the mare and the unborn foals. The horse's reproductive system has developed to carry one fetus to term, and the addition of a second fetus results in competition...

Equine abortion and stillbirth refer to delivery of a non-viable fetus or foal. Most causes of abortion and stillbirth do not affect the mare’s future fertility; however, the loss of the foal can cause significant economic losses for the breeder....

Newborn foals are born with an immature immune system, with limited ability to fight off infections and diseases. To build immunity, neonatal foals must absorb immunoglobulins, also known as antibodies, from their dam’s colostrum within 24 hours after birth. This...

Raising a healthy foal involves working closely with your veterinarian and equine nutritionist to make sure they are maintaining proper growth and development. Foals grow quickly in the first few months after birth, reaching ~80% of their mature height and...

Weaning foals refers to separating the foal from their mother so they no longer consume milk by nursing. Once weaned, foals must obtain nutrients from forage and other feeds. Domesticated foals are typically weaned four to seven months after birth....

Retained fetal membranes (RFM), also referred to as retained placenta, is a condition that affects a small percentage of broodmares. RFM can lead to serious medical complications in affected mares and requires prompt treatment. Potential complications of RFM include laminitis,...

Preparing your broodmare for breeding and pregnancy requires careful planning to ensure she is in optimal condition to carry and deliver a healthy foal. A Breeding Soundness Exam (BSE) provides a health assessment of mares being considered for breeding. Some...

Your vet has just confirmed that your mare is pregnant, and you can’t wait for that healthy foal to arrive! When should you be changing her feed? How much weight does she need to gain? What additional nutrients does she...

Producing high-quality milk for the foal requires a lot from your mare. Lactation puts higher energy demands on a mare’s body than any other stage of her life. To keep up with the milk requirements of a growing foal while...

Colostrum is the first milk that a mare produces after foaling. It is particularly rich in antibodies, which provide immunity for newborn foals. Foals are born without a fully developed immune system and rely on a passive transfer of antibodies...