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Physiology Approach
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Basic research focuses on identifying genes and physiological traits associated with enhanced reproductive efficiency under sustainable nutritional regimens.  Traits of economic importance being evaluated include growth and age of puberty in heifers and bulls, and re-breeding reproductive success and longevity of mature cows. Basic molecular and physiological approaches are being implemented to identify early indicators of fertility and embryonic survival in females and semen parameters associated with bull fertility. In addition, applied research focuses on improving reproduction efficiency of replacement heifers and postpartum cows by developing novel methods and management strategies that enhance fertility and shorten length of breeding season.

USDA, ARS Fort Keogh Livestock and Range Research Laboratory
243 Fort Keogh Rd., Miles City, MT  59301
Phone: 406-232-8200, Fax:  406-232-8289