Document Detail

The relationship of the interval from breeding to uterine palpation for pregnancy diagnosis with calving outcomes in holstein cows.
MedLine Citation:
PMID:  16727777     Owner:  NLM     Status:  PubMed-not-MEDLINE    
This study used data collected prospectively at 32 dairy herds to examine the effect of interval from breeding to uterine palpation for pregnancy diagnosis on calving interval and likelihood of calving. Multivariable statistical models were used to control for other factors that were significantly associated with the outcomes of interest. Cows diagnosed pregnant from 30 to 36 d post breeding had 2-wk longer calving intervals than cows palpated at later intervals. The interval from breeding until a cow was diagnosed open had a significant positive association with the calving interval. The interval to palpation was not associated with the probability of remaining in the herd to calve when controlling for the effects of herd, season of freshening, number of services, days to first service and mature equivalent milk production. Among cows diagnosed pregnant, 3.4% subsequently were bred and 1.5% were diagnosed open by palpation at a later date. About 5% of the cows diagnosed open calved at a time consistent with being pregnant when the diagnosis was made.
L D Warnick; H O Mohammed; M E White; H N Erb
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Theriogenology     Volume:  44     ISSN:  0093-691X     ISO Abbreviation:  Theriogenology     Publication Date:  1995 Oct 
Date Detail:
Created Date:  2006-05-26     Completed Date:  2007-07-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421510     Medline TA:  Theriogenology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  811-25     Citation Subset:  -    
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
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