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Introduction to Discussion

Department of Animal Science, North Carolina State University, Raleigh

Abstract

Perhaps the most significant point of Dr. Hulet's paper is the one that again demonstrates the delicate balance existing between certain external forces and the reproductive processes of our domestic animals. Further, his discussion shows that the pattern of reproduction can often be altered by simple manipulation of these forces, e.g., in this instance the presence of a ram can influence the time of onset of estrus. However, these observations should not be particularly surprising; the importance of the behavioral patterns of an animal on reproduction has been known and discussed for a long time. It is a subject that has captured the imagination of those interested in the study of animal migration for purposes of reproduction.

Others have concerned themselves with the effect of behavior of one animal on libido of another animal at the time of mating. Examples of this are found in the courtship dances of some birds and mammals.