Induction of fertile mating during summer anestrous in the ewe would aid in spreading the peak supply of lambs over a longer period of time. This should aid many facets of the industry. The effects of alteration of the natural light and dark ratios during the summer months on breeding results were evaluated. Extending day length to 16 hours starting July 4 appeared somewhat beneficial. Results of several light : dark regimes alone or in combination with ormone treatments are reported.
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South Dakota State University
Copyright © 1981 South Dakota State University
Slyter, A. L. and Moser, C. C., "Alteration of the Anestrous Period In Targhee Ewes" (1981). South Dakota Sheep Field Day Proceedings and Research Reports, 1981. 3.