Quantitative trait loci affecting health traits in Swedish dairy cattle

被引：47

作者：

Holmberg, M ^{[1
]}

Andersson-Eklund, L ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Dept Anim Breeding & Genet, S-75007 Uppsala, Sweden

来源：

JOURNAL OF DAIRY SCIENCE | 2004年 / 87卷 / 08期

关键词：

quantitative trait loci; clinical mastitis; health trait; dairy cattle;

D O I：

10.3168/jds.S0022-0302(04)73391-3

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

The purpose of this study was to map quantitative trait loci (QTL) affecting health traits in Swedish dairy cattle. A genome scan covering 17 chromosomes was performed. Ten grandsire families were used in a granddaughter design. Nine of the families belonged to the Swedish Red and White breed, which is related to other Nordic Ayrshire breeds, and one family was of the Swedish Holstein breed. A total of 417 bulls were genotyped for 116 microsatellite markers distributed over 17 chromosomes. Daughter yield deviations for clinical mastitis, somatic cell count (SCC), and other diseases ( OD) were included in the analysis. Least squares interval mapping using putative QTL as cofactors was applied both within and across grandsire families. Significance thresholds were set by permutation tests. In the across-family analysis, we detected 8 suggestive QTL and 3QTL significant at the genome level. The QTL affecting clinical mastitis were found on 3 chromosomes ( 9, 11, and 25), 4 QTL for SCC were found ( on chromosomes 5, 9, 11, and 23), and we detected 4 QTL for OD (on chromosomes 9, 11, 15, and 25). In addition, we found several QTL that segregated within single families but where the QTL effect was not significant in the across-family analysis. In conclusion, we were able to locate QTL for all 3 analyzed traits, and overlapping QTL for several traits were observed.

引用

页码：2653 / 2659

页数：7

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