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Endocrine Physiology Following Parturition¹

Iowa State University, Ames 50010²

Abstract

THIS paper attempts to review the more recent publications on postpartum endocrine physiology in the four major domestic mammals—the mare, ewe, sow and cow. References to research of the other speakers at the symposium have been kept to a minimum. The early literature in this area was not reviewed extensively since there are recent review articles on the cow (Morrow, Roberts and McEntee, 1969) and ewe (Hunter, 1968a, b) which one may consult.

The interest in increasing animal production has led to a consideration of methods of shortening the interval from parturition to conception. An improved understanding of the physiologic changes of the postpartum female is an integral part of such an approach. As will be readily apparent, there is need for much more information on the mare regarding most aspects of puerperal physiology. There are also numerous gaps in our knowledge of postpartum reproductive physiology in other species.

The Mare

There is a lack of information regarding several aspects of equine reproductive physiology, and especially of data concerned with postpartum endocrine function.

¹ This work was supported in part by Contract Grant No. NIH-69-2213 from the Center for Population Research, National Institutes of Health.

² Veterinary Medical Research Institute, College of Veterinary Medicine.