Abstract

Control of estrus in gilts is theoretically possible by feeding a progestogen for 18 consecutive days. During the feeding period the progestogen suppresses estrus in all gilts and when withdrawn from the feed, all animals are expected to come in heat 4 to 7 days later. To be useful, the synchronizing agent must meet two criteria: (1) it must effectively control the time of estrus, and (2) it must not adversely affect fertility. We conducted this trial to evaluate a progestogen, allyl trenbolone, with respect to these criteria. Allyl trenbolone is not presently available to swine producers.; Swine Day, Manhattan, KS, November 8, 1979

Keywords: Swine day, 1979, Kansas Agricultural Experiment Station contribution, no. 80-136-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 371, Swine, Allyl trenbolone, Estrus, Gilts, Conception rate, Litter size

How to Cite:

Davis, D. L., Robl, J. M. & Nelssen, J. L., (1979) “Allyl trenbolone to control estrus in gilts-conception rate and litter size after treatment”, Kansas Agricultural Experiment Station Research Reports 1(10), 12-13. doi: https://doi.org/10.4148/2378-5977.6044