Allyl trenbolone to control estrus in gilts -conception rate and litter size after treatment
Date
2010-04-30T18:03:48Z
Authors
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Journal ISSN
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Publisher
Kansas State University. Agricultural Experiment Station and Cooperative Extension Service
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 During the feeding period the progestogen suppresses estrus in all gilts and when withdrawn from the feed, all animals are expected to come in heat 4 to 7 days later.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.
Description
Keywords
Swine, Allyl trenbolone, Estrus, Gilts, Conception rate, Litter size