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Journal of Dairy Science Vol. 68 No. 4 958-962
© 1985 by American Dairy Science Association ®
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Correlations Between Calving Ease and Calf Survival

R. I. Cue and J. F. Hayes

Department of Animal Science, Macdonald College of McGill University, 21,111 Lakeshore Road, Ste. Anne de Bellevue, Quebec, Canada H9X 1CO

ABSTRACT

Multitrait restricted maximum likelihood methods were used for estimation of heritabilities and genetic and phenotypic correlations between calving ease and calf survival. These analyses examined both direct and maternal effects. Genetic correlation for direct effects between calving ease and calf survival was approximately –.8 in both heifers and cows, indicating favorable associations, whereas phenotypic correlations were –.32 and –.22.




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G. R. Wiggans, J. B. Cole, and L. L. M. Thornton
Multiparity Evaluation of Calving Ease and Stillbirth with Separate Genetic Effects by Parity
J Dairy Sci, August 1, 2008; 91(8): 3173 - 3178.
[Abstract] [Full Text] [PDF]


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