Association between a polymorphism at the stearoyl CoA desaturase locus and milk production traits in Italian Holsteins

被引：74

作者：

Macciotta, N. P. P. ^{[1
]}

Mele, M. ^{[2
]}

Conte, G. ^{[2
]}

Serra, A. ^{[2
]}

Cassandro, M. ^{[3
]}

Dal Zotto, R. ^{[3
]}

Borlino, A. Cappio ^{[1
]}

Pagnacco, G. ^{[4
]}

Secchiari, P. ^{[2
]}

机构：

[1] Univ Sassari, Dipartimento Sci Zootecn, I-07100 Sassari, Italy

[2] Univ Pisa, Dipartimento Agron & Gest Agroecosistema, I-56124 Pisa, Italy

[3] Univ Padua, Dipartimento Sci Anim, I-35020 Padua, Italy

[4] Univ Milan, Dipartimento Sci & Tecn Vet Sicurezza Alimentare, I-20133 Milan, Italy

来源：

JOURNAL OF DAIRY SCIENCE | 2008年 / 91卷 / 08期

关键词：

dairy cattle; stearoyl-CoA locus; polymorphism; milk production trait;

D O I：

10.3168/jds.2007-0947

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Associations between stearoyl-CoA desaturase (SCD) gene polymorphisms and milk production traits (milk, fat, and protein yields, fat and protein contents, somatic cell score) were investigated on a sample of 701 lactations of 313 Italian Holsteins. Test-day records (5,097) were analyzed with a mixed linear model that included the fixed effects of herd, date of test, parity, genotype at the SCD locus, and lactation interval nested within SCD genotype, and the random effect of cow. An effect of the SCD genotype on milk and protein yields was detected, with VV cows producing more milk (about 2 kg/d) and protein (about 0.07 kg/d) compared with AA cows. The contribution of the SCD locus to the phenotypic variance of the 2 traits was about 0.015. These results suggest a possible use of the SCD locus in gene-assisted selection programs for the improvement of milk production traits in dairy cattle, although large-scale studies in different breeds are required.

引用

页码：3184 / 3189

页数：6

共 34 条

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