Document Detail


Sire and maternal grandsire effects on calving difficulty and calf mortality in Israeli Holsteins.
MedLine Citation:
PMID:  3700784     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Associations among sire and maternal grandsire evaluations for calving difficulty and calf mortality were investigated in the Israeli Holstein population. Primiparous and multiparous calvings were analysed separately. Genetic correlations between calving difficulty and calf mortality were close to unity for primiparous calvings but lower for multiparous calvings. Genetic correlations between primiparous and multiparous sire evaluations were .94 and .72 for calving difficulty and calf mortality. Genetic correlations between sire and maternal grandsire evaluations were .6 for primiparous calvings and not-significant for multiparous calvings for both traits. These results correspond to findings that the direct genetic effect is larger than the maternal effect but that there is a slight negative correlation between them. We suggest that sire evaluations for calving difficulty of multiparous cows be used as a preliminary prediction of heifer calving difficulty and calf mortality and that the separate calving trait evaluations be combined into an overall calving selection index.
Authors:
M Ron; R Bar-Anan; J I Weller
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of dairy science     Volume:  69     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1986 Jan 
Date Detail:
Created Date:  1986-05-28     Completed Date:  1986-05-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  243-7     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Cattle / genetics*
Female
Obstetric Labor Complications / genetics*
Pregnancy
Reproduction*
Species Specificity

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


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