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Prospects for Controlling Reproductive Processes in Cattle, Sheep, and Swine from Recent Findings in Reproduction^{1 ,2,}

Department of Animal Science, North Carolina State University, Raleigh 27650

ABSTRACT

Recent advances in understanding of physiological mechanisms controlling reproduction have led to procedures which may be adaptable to commercial management of reproduction in cattle, swine, and sheep. This paper reviews procedures which may be useful for altering age at puberty, controlling time of estrus and ovulation, detecting estrus, diagnosing pregnancy, controlling time of parturition, and reducing the period of postpartum or seasonal anestrus. Examples are cited as to how such procedures may improve reproductive efficiency, and factors which may affect responses to such treatments are identified.

¹ Paper No. 5707 of the Journal Series of the North Carolina Agricultural Experiment Station, Raleigh. The use of trade names in this publication does not imply endorsement by the North Carolina Experiment Station of the products named, nor criticism of similar ones not mentioned.

² Symposium paper presented at the Joint Regional Meeting, Northeast Division, American Dairy Science Association and Northeast Section, American Society of Animal Science, Amherst, MA, July 24, 1978.