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Find information on animal health topics, written for the veterinary professional.

Overview of Hormonal Control of Estrus

By Juan E. Romano, DVM, MS, PhD, DACT, College of Veterinary Medicine, Texas A&M University

Hormones are commonly used to manipulate the estrous cycle. The major indications for hormonal control of estrus are to induce luteolysis, induce ovulation of a mature follicle, suppress estrus, induce cyclicity in anestrous animals, and superovulate cyclic animals. Effective treatments for these manipulations vary among species. A number of treatments currently lack regulatory approval; label instructions should be followed.