Dissection of additive genetic variability for quantitative traits in chickens using SNP markers

R. Abdollahi-Arpanahi, A. Pakdel, A. Nejati-Javaremi, M. Moradi Shahrbabak, G. Morota, B.D. Valente, A. Kranis, G.J.M. Rosa, D. Gianola

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this study was to separate marked additive genetic variability for three quantitative traits in chickens into components associated with classes of minor allele frequency (MAF), individual chromosomes and marker density using the genomewide complex trait analysis (GCTA) approach. Data were from 1351 chickens measured for body weight (BW), ultrasound of breast muscle (BM) and hen house egg production (HHP), each bird with 354 364 SNP genotypes. Estimates of variance components show that SNPs on commercially available genotyping chips marked a large amount of genetic variability for all three traits. The estimated proportion of total variation tagged by all autosomal SNPs was 0.30 (SE 0.04) for BW, 0.33 (SE 0.04) for BM, and 0.19 (SE 0.05) for HHP. We found that a substantial proportion of this variation was explained by low frequency variants (MAF
Original languageEnglish
Pages (from-to)183-193
JournalJournal of Animal Breeding and Genetics
Volume131
Issue number3
Early online date25 Jan 2014
DOIs
Publication statusPublished - Jan 2014

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