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: Cattlemen's Day, 1992, Kansas Agricultural Experiment Station contribution, no. 92-407-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 651, Beef, MGA/PG, Heifers, Timed mating, Conception rate
How to Cite:
Larson, R. L. & Corah, L., (1992) “Synchronization of estrus in yearling beef heifers with the MGA®/prostaglandin F2α system: III. timed insemination after 72 hours of estrous detection”, Kansas Agricultural Experiment Station Research Reports 1(1), 45-46. doi: https://doi.org/10.4148/2378-5977.2156
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