Document Detail


Management practices associated with high mortality among preweaned dairy heifers.
MedLine Citation:
PMID:  9120071     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a national survey of US dairy operations, 1685 dairy operations reported 47,057 new dairy heifers (either births or acquisitions) and 4427 deaths (9.4%) of preweaned dairy heifer calves over a 3 month period. Stepwise logistic regression was used to identify management practices associated with high mortality among preweaned heifers in dairy operations where at least three dairy heifer calves were born alive or moved on to the operation. Analysis was done twice: once by separating all operations by size into high or low mortality; again using only operations with < 2 and > 10% mortality to eliminate dairy operations with intermediate levels of mortality from the comparisons. Results were similar. Dairy operations in the West were more likely to fall in the high mortality category than dairy operations in the rest of the country. In addition, the following dairy operation characteristics were associated with high death levels in both models: rolling herd average milk production < 7710 kg. preweaned heifers placed in groups of seven or more, a male having primary responsibility for the care and feeding of preweaned heifers, calves not receiving hay or other roughages until > 20 d old, calves fed on mastitic or antibiotic milk after colostrum and calves not given whole milk after colostrum.
Authors:
W C Losinger; A J Heinrichs
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of dairy research     Volume:  64     ISSN:  0022-0299     ISO Abbreviation:  J. Dairy Res.     Publication Date:  1997 Feb 
Date Detail:
Created Date:  1997-04-24     Completed Date:  1997-04-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  2985125R     Medline TA:  J Dairy Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1-11     Citation Subset:  IM    
Affiliation:
Center for Epidemiology, USDA Animal and Plant Health Inspection Service, Fort Collins, CO 80521, USA.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed
Animals
Anti-Bacterial Agents / analysis
Cattle / physiology*
Colostrum
Dairying / methods*
Female
Humans
Lactation
Logistic Models
Male
Mastitis, Bovine
Milk / chemistry
Mortality*
Risk Factors
Sex Characteristics
Weaning*
Chemical
Reg. No./Substance:
0/Anti-Bacterial Agents

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


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