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Overview of Management of Reproduction: Pigs

By

Robert V. Knox

, PhD, University of Illinois

Last full review/revision Oct 2021
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Management of commercial swine breeding herds involves a thorough understanding of reproductive physiology, genetics, nutrition, immunology, disease control, environment, and other factors. (See also Abortion in Pigs Abortion in Pigs Also see Management of Reproduction: Pigs. Many agents that cause reproductive failure in sows produce a broad spectrum of sequelae, including abortions and weak neonates, as well as stillbirth... read more .) The closed-herd concept, which emphasizes preventive medicine strategies along with herd protection, minimizes the risk of disease loss when combined with intensive management, sound nutrition, and genetic selection. The breeding program should be evaluated at specified intervals to ensure that progress in both efficiency and productivity is being made. Several efficiency/production parameters to review when analyzing herd reproductive performance are shown in Measures of Reproductive Performance in Swine Relative to Industry Averagesa Measures of Reproductive Performance in Swine Relative to Industry Averagesa Management of commercial swine breeding herds involves a thorough understanding of reproductive physiology, genetics, nutrition, immunology, disease control, environment, and other factors.... read more . The postweaning performance of a breeding herd's offspring can be measured through assessment of such parameters as feed conversion ratio, average daily gain, total days to market, and postweaning death loss.

Problems on a swine farm can have a single cause or be caused by a combination of genetic, nutritional, environmental, health, and management factors. When investigating a herd problem, the practitioner can best benefit from remaining focused on the herd and not on individual animals. Accurate, up-to-date records are essential when investigating a herd problem. When analyzing a herd and its records, a certain percentage of “abnormal” animals and/or reproductive problems are to be expected.

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