Abstract:

Ovarian follicular development, estrus, and ovulation in seasonally anestrous sows treated seven days post weaning with equine and human chorionic gonadotropins

C. J. Bracken, PhD; J. S. Seaman-Bridges, MSc; T. J. Safranski, PhD; M. C. Lucy, PhD

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Seasonally anestrous sows were identified on day 7 after weaning and treated either with equine and human chorionic gonad-otropins or saline (control). Gonadotropin treatment stimulated ovarian follicular development, and more treated sows than controls expressed estrus, were inseminated, ovulated, and became pregnant within 1 week after treatment.

Keywords: seasonal anestrus, equine chorionic gonadotropin, human chorionic gonadotropin

RIS citationCite as: Bracken CJ, Seaman-Bridges JS, Safranski TJ, et al. Ovarian follicular development, estrus, and ovulation in seasonally anestrous sows treated seven days post weaning with equine and human chorionic gonadotropins. J Swine Health Prod 2006;14(4):207-209.

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