QTL Identification Using Combined Linkage and Linkage Disequilibrium Mapping for Milk Production Traits on BTA6 in Chinese Holstein Population

被引：2
作者：
Hu, F. [1 ,2 ,3 ]
Liu, J. F. [1 ]
Zeng, Z. B. [3 ]
Ding, X. D. [1 ]
Yin, C. C. [1 ]
Gong, Y. Z. [2 ]
Zhang, Q. [1 ]
机构：
[1] China Agr Univ, Coll Anim Sci & Technol, Minist Agr, Key Lab Anim Genet & Breeding, Beijing 100094, Peoples R China
[2] Huazhong Agr Univ, Coll Anim Sci & Technol, Wuhan, Peoples R China
[3] N Carolina State Univ, Bioinformat Res Ctr, Raleigh, NC 27695 USA
来源：
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES | 2010年 / 23卷 / 10期
关键词：
Fine Mapping; QTL; Bos Taurus autosome 6; Milk Production Traits; DAIRY-CATTLE; BOVINE CHROMOSOME-6; GENOME SCAN; LOCI; MAP; YIELD; GENE; PEDIGREES; IDENTITY; SEARCH;
D O I：
10.5713/ajas.2010.10011
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
Milk production traits are important economic traits for dairy cattle. The aim of the present study was to refine the position of previously detected quantitative trait loci (QTL) on bovine chromosome 6 affecting milk production traits in Chinese Holstein dairy cattle. A daughter design with 918 daughters from 8 elite sire families and 14 markers spanning the previously identified QTL region were used in the analysis. We employed a combined linkage and linkage disequilibrium analysis (LDLA) approach with two options for calculating the IBD probabilities, one was based on haplotypes of all 14 markers (named Method 1) and the other based on haplotypes with sliding windows of 5 markers (named Method 2). For milk fat yield, the two methods revealed a highly significant QTL located within a 6.5 cM interval (Method 1) and a 4.0 cM interval (Method 2), respectively. For milk protein yield, a highly significant QTL was detected within a 3.0 cM interval (Method 1) or a 2.5 cM interval (Method 2). These results confirmed the findings of our previous study and other studies, and greatly narrowed down the QTL positions.
引用
收藏
页码：1261 / 1267
页数：7
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