Gonadotropin-Releasing Hormone and Prostaglandin F2α for Postpartum Dairy Cows: Estrous, Ovulation, and Fertility Traits
Open Access
- 1 March 1986
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 69 (3), 800-811
- https://doi.org/10.3168/jds.s0022-0302(86)80469-6
Abstract
A study of 234 Holstein cows was conducted to determine if early postpartum treatments of gonadotropin-releasing hormone, prostaglandin F2 alpha, or both would alter frequency and occurrence of estrus and ovulation as well as subsequent fertility. Cows in groups 1 and 2 received gonadotropin-releasing hormone (200 micrograms) between 10 and 14 d postpartum, and cows in groups 3 and 4 received saline. Ten days later, cows in groups 2 and 3 received prostaglandin F2 alpha (25 mg), and cows in groups 1 and 4 received saline. Treatment with gonadotropin-releasing hormone reduced intervals to first ovulation and first detected estrus as well as increasing the proportion of cows with three or more ovulations before first service from 57% for saline-treated controls to 83%. Treatment with prostaglandin F2 alpha reduced intervals to second and third ovulation and shortened the first estrous cycle. Treatments for cows in groups 1 and 3 increased the proportion of cows having estrous cycles of normal duration. Interval from calving to conception was reduced by 43 to 48 d for cows with an abnormal puerperium treated with either gonadotropin-releasing hormone or prostaglandin F2 alpha compared with controls (group 4) and by 27 to 29 d overall in all cows in groups 1 and 3. Cows with normal or abnormal puerperium in groups 1 and 3 required 26 to 41% fewer services per conception than controls. We conclude that treatments of gonadotropin releasing hormone or prostaglandin F2 alpha, but not the treatment combination, improved fertility of dairy cows, especially those that experienced puerperal problems.Keywords
This publication has 24 references indexed in Scilit:
- Increased conception rate in dairy cows after early post partum administration of prostaglandin F2 alpha THAMPublished by Wiley ,1984
- The effect of PGF-2 alpha on reproductive performance of naturally bred dairy cows with or without pyometraTheriogenology, 1984
- Effect of gonadotropin-releasing hormone and prostaglandin F2α on reproduction in postpartum dairy cowsTheriogenology, 1983
- Influence of early estrus, ovulation, and insemination on fertility in postpartum Holstein cowsTheriogenology, 1983
- Effect of stage of the estrous cycle on interval to estrus after PGF2α in beef cattleTheriogenology, 1982
- Postpartum uterine motility measurements in dairy cows retaining their fetal membranesTheriogenology, 1981
- Comparison of treatment of pyometra with estradiol cypionate or cloprostenol followed by infusion or non-infusion with nitrofurazoneTheriogenology, 1980
- Treatment of metritis in cattle with prostaglandin F2 alphaPublished by Wiley ,1978
- Ovarian and endocrine responses and reproductive performance following GnRH treatment in early postpartum dairy cowsTheriogenology, 1978
- Treatment of bovine pyometra with prostaglandin F2α: An evaluation of a field studyTheriogenology, 1976