Document Detail

Effect on pregnancy rate of nonestrus insemination in previously inseminated dairy cows.
MedLine Citation:
PMID:  16726707     Owner:  NLM     Status:  In-Data-Review    
Lactating dairy cows (n = 157) designated for slaughter under the 1986 U.S. Dairy Termination Program were utilized in two trials to determine the effects of a second insemination on fertility. Cows that had been previously inseminated at estrus were inseminated again at 12-24 d later, when not in estrus. Cows that were reinseminated into the uterine body had significantly lower pregnancy rates (4% vs 40.6% for controls). Differences in pregnancy rates when the reinsemination was performed in the mid-cervical region were not significant (34.8% vs 50% for controls). Based upon these studies, intrauterine insemination of cows displaying questionable signs of estrus should be avoided in previously inseminated cows.
L D Weaver; C A Daley; C L Borelli
Related Documents :
18243597 - Progesterone concentration, follicular development and induction of cyclicity in dairy ...
22342897 - Neonatal morbidity after induction vs expectant monitoring in intrauterine growth restr...
7660547 - Management aspects of induced twinning in beef suckler cows using in vitro fertilised e...
15950407 - Environmental effects on progesterone profile measures of dairy cow fertility.
16839857 - Changes in the endorphin and serotonin content of rat immune cells during adulthood fol...
6562267 - The first trimester.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Theriogenology     Volume:  32     ISSN:  0093-691X     ISO Abbreviation:  Theriogenology     Publication Date:  1989 Oct 
Date Detail:
Created Date:  2006-05-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421510     Medline TA:  Theriogenology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  603-6     Citation Subset:  -    
Veterinary Medicine Teaching and Research Center University of California, Davis 18830 Road 112 Tulare, California 93274 USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Histopathologic and gross effects of testicular biopsy in the dog.
Next Document:  Urinary eCG patterns in the mare during pregnancy.