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United States Department of Agriculture

Agricultural Research Service

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Research Project: IDENTIFY MECHANISMS BY WHICH OVULATORY FOLLICLE SIZE AFFECTS PREGNANCY ESTABLISHMENT AND MAINTENANCE IN BEEF COWS

Location: Range and Livestock Research

Project Number: 5434-31000-017-08-S
Project Type: Specific Cooperative Agreement

Start Date: May 1, 2008
End Date: Apr 30, 2013

Objective:
To improve our understanding of the mechanism(s) by which ovulatory follicle size affects pregnancy establishment and embryonic mortality.

Approach:
ARS – A student from Conapec will visit the Fort Keogh Livestock and Range Research Laboratory (LARRL) and evaluate the effects of serum estradiol and ovulatory follicle size on embryo quality & morphology, and pregnancy establishment & maintenance in beef cows. Conapec – members will evaluate effects of exogenous estradiol cypionate, equine chorionic gonadotropin, and temporary calf removal on ovulatory follicle size, and establishment / maintenance of pregnancy in large beef herds in Brazil. Information will be mutually shared between involved parties.

Last Modified: 2/23/2016
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