HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Mahajan, S. C. Articles by Menge, A. C. Search for Related Content PubMed Articles by Mahajan, S. C. Articles by Menge, A. C.

Influence of Uterine Environmient on the Fertilizing Capacity of Sperm in Cattle^{1, 2,}

New Jersey Agricultural Experiment Station, Sussex^,5

Abstract

Insemination of heifers at various intervals after ovulation with nonincubated sperm and sperm incubated in the uteri of estrous heifers for 6 to 14 hr. indicated no detectable effect of the previous exposure to uterine environment on the fertilizing capacity of bull sperm. Fertilization of ova occurred in eight heifers inseminated at 13 hr. with both types of sperm, but not at 14.5 hr, or longer except in one of four heifers bred at 14.5 hr. with control sperm. The prior exposure of sperm to estrous uteri did not result in ova fertilization in eight heifers bred after the induction of ovulation during the luteal phase. Previous uterine incubation of sperm also did not apparently influence the conception rates of heifers bred 13 hr. after ovulation.

¹ Paper of the Journal Series, New Jersey Agricultural Experiment Station, Rutgers—The State University, New Brunswick.

² This investigation was supported in part by funds provided by the Regional Research Project NE-41, Endocrine Factors Affecting Reproduction in the Bovine, a cooperative study by Agricultural Experiment Stations in the Northeast.

³ Present address: Department of Genetics, University of Wisconsin, Madison, Wisconsin.

⁴ Acknowledgment is due R. G. Zimbelman, The Upjohn Company, for generously supplying Repromix (medroxyprogesterone acetate) and HCG; to D. Kramer and N. Vander Weide for technical assistance; and to L, E. Casida for reading the manuscript.

⁵ Department of Animal Sciences.