Mapping of quantitative trait loci affecting quality and production traits in egg layers

被引：115

作者：

Tuiskula-Haavisto, M ^{[1
]}

Honkatukia, M

Vilkki, J

de Koning, DJ

Schulman, NF

Mäki-Tanila, A

机构：

[1] MTT Agrifood Res, Anim Prod Res, Anim Breeding, Jokioinen 31600, Finland

[2] Univ Wageningen, Anim Breeding & Genet Grp, Wageningen, Netherlands

来源：

POULTRY SCIENCE | 2002年 / 81卷 / 07期

关键词：

egg layer; quantitative trait loci; egg quality; egg production; genome scan;

D O I：

10.1093/ps/81.7.919

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

A mapping population segregating for egg quality traits was created by a line cross between two egg layer lines and screened by a genome scan. The F-2 generation consisted of 307 hens, which were scored for egg quality and production traits. The mapping population was genotyped for 99 microsatellite loci, spanning nine macrochromosomes and five small linkage groups. The linkage maps were used in mapping QTL affecting 14 traits, by using multiple markers and a least-squares approach. We detected 14 genomewide significant and six suggestive QTL that were located on chromosomes 2, 3, 4, 5, and. 8 and sex chromosome Z. A significant QTL affecting egg white thinning was found on chromosome 2. For eggshell strength, a significant QTL was found on chromosome Z. For production traits, the most interesting area was on chromosome 4, where highly significant QTL effects were detected for BW, egg weight, and feed intake in the same area. The most significant QTL explains 25.8% of the phenotypic variance in F-2 of body weight. An area affecting the age at first egg, egg weight, and the number of eggs was located on chromosome Z.

引用

页码：919 / 927

页数：9

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