| Comparison of two estrus synchronization programs in a large, confinement-housed dairy herd. | |
| | |
MedLine Citation:
|
PMID: 9448825 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: To compare pregnancy rates, seasonal effects, and economic benefits of 2 estrus synchronization programs for a confinement-housed dairy herd. DESIGN: Prospective cohort study. ANIMALS: 200 lactating Holstein cows. PROCEDURE: Cows eligible for breeding were palpated per rectum and randomly assigned to 2 treatment groups during 4 seasonal periods. Cows in one group (Ovsynch) received injections of gonadotropin releasing hormone (GnRH) on day 0, prostaglandin F2 alpha on day 7, and a second injection of GnRH on day 8. Cows in the other group (PP) that had a palpable corpus luteum were given prostaglandin F2 alpha. Estrus detection was not performed on the Ovsynch cows, which were artificially inseminated at a predetermined time after the second GnRH injection. Cows in the PP group were observed for signs of estrus, and only those that were detected in estrus were inseminated. RESULTS: Pregnancy rates and insemination rates were significantly improved for cows in the Ovsynch group, compared with cows in the PP group. CLINICAL IMPLICATIONS: The Ovsynch program was an economically advantageous method for controlling reproduction that resulted in pregnancies without the need for estrus detection. |
| | |
Authors:
|
J S Britt; J Gaska |
Related Documents
:
|
10064025 - Pregnancy detection and the effects of age, body weight, and previous reproductive perf... 3814705 - Detection of pregnancy by radioimmunoassay of a novel pregnancy-specific protein in ser... 19281595 - Morpho-physical recording of bovine conceptus (bos indicus) and placenta from days 20 t... 1885355 - Life span of beef-type bos taurus and bos indicus x bos taurus females in a dry, temper... 3721905 - Association of fetal growth with elevated maternal plasma zinc concentration in human p... 671155 - Spontaneously acquired factor ix inhibitor in a nonhemophiliac child. |
Publication Detail:
|
Type: Comparative Study; Journal Article |
Journal Detail:
|
Title: Journal of the American Veterinary Medical Association Volume: 212 ISSN: 0003-1488 ISO Abbreviation: J. Am. Vet. Med. Assoc. Publication Date: 1998 Jan |
Date Detail:
|
Created Date: 1998-02-18 Completed Date: 1998-02-18 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7503067 Medline TA: J Am Vet Med Assoc Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 210-2 Citation Subset: IM |
Affiliation:
|
Department of Medical Science, School of Veterinary Medicine, University of Wisconsin-Madison 53706-1102, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animal Husbandry
/
economics,
methods Animals Cattle / physiology* Cohort Studies Dairying / economics, methods* Dinoprost / pharmacology Estrus / drug effects, physiology Estrus Synchronization* Female Gonadotropin-Releasing Hormone / pharmacology Housing, Animal* Insemination, Artificial / veterinary Lactation / physiology Pregnancy Pregnancy Rate Prospective Studies Random Allocation Seasons |
| Chemical | |
Reg. No./Substance:
|
33515-09-2/Gonadotropin-Releasing Hormone; 551-11-1/Dinoprost |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Defensive dental behaviour: illusion or reality?
Next Document: Erythroid hypoplasia and anemia following administration of recombinant human erythropoietin to two ...