Increased Incidence of Twins
Q. I read the article about twins (“Seeing Double”) and would like to ask a question: If research shows that Thoroughbreds and Warmbloods are more likely to have twin pregnancies, could this be in relation to the number of mares that receive injections (of ovulation-inducing agents such as human chorionic gonadotropin [hCG] or deslorelin acetate) to encourage ovulation?

I allow my mares to breed naturally (live cover rather than by artificial insemination) with no interference apart from ensuring a clean uterus prior to breeding. To date I’ve not had any twin pregnan

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