CORRELATIONS BETWEEN UDDER CONFORMATION TRAITS AND SOMATIC-CELL COUNT IN CANADIAN HOLSTEIN COWS

被引：30

作者：

MONARDES, HG

CUE, RI

HAYES, JF

机构：

[1] Department of Animal Science, Macdonald College of McGill University, Ste. Anne de Bellevue, Québec, H9X 1C0, 21

来源：

JOURNAL OF DAIRY SCIENCE | 1990年 / 73卷 / 05期

关键词：

conformation; Holsteins; somatic cell count;

D O I：

10.3168/jds.S0022-0302(90)78800-5

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Heritabilities of, and genetic and phenotypic correlations between, type traits and the arithmetic mean of lactational SCC were estimated using minimum norm quadratic unbiased estimation and two multitrait REML methods. Three sets of data were analyzed. Heritabilities of all traits were small. For SCC, heritabilities varied between .09 and .11 and for type traits, between .08 and .14. Genetic correlalions between SCC and type traits varied between –.22 and .30. Phenotypic correlations were very low. In general, correlations indicate a rather favorable association between SCC and udder conformation traits; that is, a desirable score on type would be associated with low SCC in milk. © 1990, American Dairy Science Association. All rights reserved.

引用

页码：1337 / 1342

页数：6

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