Knowledge of the endocrine changes during the estrous cycle of the sow and mare allows an understanding of the behavioral patterns during the various stages of the estrous cycle. With regression of the CL and decline of progesterone, estrogen from maturing Graafian follicles promotes the physical and behavioral expression patterns that are utilized to determine the proper timing of breeding. A complete understanding of characteristics for typical estrous behavior in the sow and mare is especially important when utilizing artificial insemination (AI). Utilization of ultrasonography has assisted in determining the time of ovulation in the mare. Research continues to explore methods to accurately predict or induce ovulation for optimal breeding.

Pregnancy Nutrition

Pregnancy Nutrition

Are You Expecting? Find Out Everything You Need to Know About Pregnancy and Nutrition Without Having to Buy a Dictionary. This book is among the first books to be written with the expertise of a medical expert and from the viewpoint of the average, everyday, ordinary,

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