Why Embryos Fail and Improving Odds of Successful Horse Breeding If entering the fall, your breeding prospect has come up empty, there are considerations to ponder and actions you can take for successful breeding next year.  “Don’t let those mares sit all fall and winter, with untreated conditions such as a uterine infection,” says Dr. Tracey Chenier,…

It is not uncommon for mares to have trouble getting pregnant because their uterus remains too inflamed after breeding. This condition is referred to as persistent breeding-induced endometritis (PBIE). Ontario Veterinary College researcher, Dr. Tracey Chenier is working to find out what causes this inflammation and how to treat it. “Horse owners and breeders often…

A study has uncovered that exposure to Neospora parasites is widespread among Ontario broodmares and may play a role in Equine Abortions.  Dr. Chenier, MSc student Olivia Johns and epidemiologist Dr. David Pearl at the Ontario Veterinary College have collected samples from Ontario breeding farms to find seroprevalence is close to 30%. Risk factors identified…

The value of long-term studies is well understood by researcher, Dr. Keith Betteridge who has been involved with Ontario Veterinary College equine reproduction studies since 1986.  Since graduating as a veterinarian from Bristol University, England, in 1959, Betteridge has seen reproduction technology evolve with the introduction of ultrasound in the 1980s and, most recently, RNA…

Excerpted from Equine Guelph’s Spring 2010 Research Newsletter Highly fertile in the wild, horses are less so under management conditions that separate the sexes, remove mating choices and often call for foaling early in the year. Humans have been intervening in the breeding of horses for about 5500 years,[1] but research has contributed to the interventions…