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Swine Management to Increase Gilt Reproductive Efficiency^1,2,

U.S. Department of Agriculture³, Clay Center, NE 68933

Abstract

Management practices to improve reproductive efficiency of the gilt will enable more efficient introduction of gilts into the breeding herd. In this paper, puberty and continuation of regular estrous cycles, ovulation rate and embryonic/fetal survival are the aspects of gilt reproductive efficiency to be considered. Within each of these reproductive areas, factors such as genetics, environment, nutrition, etc., are reviewed and general management practices are proposed. Because of the diversity of swine production systems, the proposed management practices to improve gilt reproductive performance must be considered and incorporated into individual herds on a trial basis.

¹ Presented at the Nonruminant Nutrition Symp. entitled "Increasing Sow Efficiency" at the 77th Annu. Meet., of the Amer. Soc. of Anim. Sci., August 14, 1985, Univ. of Georgia, Athens.

² The secretarial assistance of Linda Parnell in the preparation of this manuscript is appreciated.

³ U.S. Meat Anim. Res. Center.