Effect of unilateral cornual insemination upon fertilization rate in superovulating and single-ovulating cattle

Journal of Animal Science
H W Hawk, T Y Tanabe

Abstract

In Exp. 1, 21 first-service cattle and seven repeat-breeder cattle, averaging 4.7 infertile services, were brought into estrus and superovulated by treatment with follicle-stimulating hormone and prostaglandin F2 alpha. At insemination, semen was deposited in the greater curvature of one uterine horn, about midway between the utero-cervical junction and the utero-tubal junction. Cattle were necropsied 2 to 7 d after estrus and ova were recovered and examined. The fertilization rate for first-service cows was 74% of 362 intact ova and for repeat-breeders, 43% of 128 intact ova (P less than .001). Fertilization rate in first-service cows was 81% on the side of semen deposition and 68% on the opposite side (P less than .01); the rates in repeat-breeders were 54% and 32% (P less than .025). Differences between sides were due mostly to four cows that averaged 93% fertilization on the side of semen deposition and 19% on the opposite side. The proportion of fertilized ova with accessory sperm (17%) did not differ between sides of the reproductive tract. In Exp. 2, 60 first-service and 32 repeat-breeder cows in natural estrus had semen deposited in the uterine body or in the greater curvature of one uterine horn, either on the side of ...Continue Reading

Citations

Jul 1, 1987·Journal of Dairy Science·H W Hawk
Mar 1, 1992·Journal of Dairy Science·T W MunkittrickR G Saacke
Jan 1, 2019·Reproduction, Fertility, and Development·M MikkolaJ Taponen
Jul 1, 1990·Journal of Dairy Science·T McKennaR L Ax
Dec 17, 2009·Reproduction, Fertility, and Development·Roberto SartoriMilo C Wiltbank
Oct 1, 1991·Journal of Dairy Science·W M GravesT L Riley
Mar 15, 2021·Journal of Dairy Science·E O'CallaghanP Lonergan
Jul 18, 2000·Theriogenology·F López-Gatius
Dec 4, 2003·Theriogenology·Steven VerberckmoesAart de Kruif
Jul 1, 1989·Theriogenology·H W MomontE Stasiukynas
Oct 27, 2004·Gynécologie, obstétrique & fertilité·A Van Soom, S Verberckmoes
May 27, 2005·Theriogenology·Steven VerberckmoesAart de Kruif

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