Synchronization of estrus in yearling beef heifers with the MGA®/prostaglandin F2α system: III. timed insemination after 72 hours of estrous detection

Synchronization of estrus in yearling beef heifers with the MGA®/prostaglandin F2α system: III. timed insemination after 72 hours of estrous detection

Larson, R.L.; Corah, L.R.

Conference paper

Publication Date: 1992

Conference: Cattlemen's Day, 1992, Kansas State University, Manhattan, KS, March 6, 1992
Starting Page: 45, Ending Page: 46
Publisher: Kansas State University. Agricultural Experiment Station and Cooperative Extension Service

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Abstract:

The percentage of heifers conceiving to artificial insemination (AI) following melengestrol acetate/prostaglandin F2"(MGA®/PG) estrous synchronization can be increased by mass insemination of all heifers not showing estrus by 72 h after PG. Inseminating at 12 h after estrus detection all heifers showing estrus within 72 h after PG; then inseminating those not detected in estrus by 72 h after PG as a group increased the proportion of heifers conceiving to AI by 10.8%.

Keywords: Beef; MGA/PG; Heifers; Timed mating; Conception rate

URL for this item: http://hdl.handle.net/2097/6327

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