Type

Journal Article

Authors

D. E. MacHugh
C. Spillane
B. W. Wickham
R. D. Evans
David A. Kenny
T. Sweeney
A. K. Kelly
S. D. E. Park
Donagh P. Berry
K. M. Sikora
and 2 others

Subjects

Veterinary

Topics
live weight high throughput beef beef production sample size zinc finger imprinting ortholog gene products genomic selection cattle snp single nucleotide polymorphisms

A catalogue of validated single nucleotide polymorphisms in bovine orthologs of mammalian imprinted genes and associations with beef production traits (2010)

Abstract Genetic (or ‘genomic’) imprinting, a feature of approximately 100 mammalian genes, results in monoallelic expression from oneof the two parentally inherited chromosomes. To date, most studies have been directed on imprinted genes in murine or human models; however, there is burgeoning interest in the effects of imprinted genes in domestic livestock species. In particular,attention has focused on imprinted genes that influence foetal growth and development and that are associated with severaleconomically important production traits in cattle, sheep and pigs. We have re-sequenced regions in 20 candidate bovine imprinted genes in order to validate single nucleotide polymorphisms (SNPs) that may influence important production traits in cattle. Putative SNPs detected via re-sequencing were subsequently re-formatted for high-throughput SNP genotyping in 185 cattlesamples comprising 138 performance-tested European Bos taurus (all Limousin bulls), 29 African B. taurus and 18 Indian B. indicussamples. Analysis of the resulting genotypic data identified 117 validated SNPs. Preliminary genotype–phenotype associationanalyses using 83 SNPs that were polymorphic in the Limousin samples with minor allele frequencies >0.05 revealed significantassociations between two candidate bovine imprinted genes and a range of important beef production traits: average daily gain,average feed intake, live weight, feed conversion ratio, residual feed intake and residual gain. These genes were the Ras proteinspecific guanine nucleotide releasing factor gene ( RASGRF1) and the zinc finger, imprinted 2 gene ( ZIM2). Despite the relatively small sample size used in these analyses, the observed associations with production traits are supported by the purported biological function of the RASGRF1 and ZIM2 gene products. These results support the hypothesis that imprinted genes contribute significantly to important complex production traits in cattle. Furthermore, these SNPs may be usefully incorporated into future marker-assisted and genomic selection breeding schemes.
Collections Ireland -> Teagasc -> Animal & Bioscience
Ireland -> Teagasc -> Animal & Grassland Research & Innovation Programme

Full list of authors on original publication

D. E. MacHugh, C. Spillane, B. W. Wickham, R. D. Evans, David A. Kenny, T. Sweeney, A. K. Kelly, S. D. E. Park, Donagh P. Berry, K. M. Sikora and 2 others

Experts in our system

1
David E. MacHugh
University College Dublin
Total Publications: 82
 
2
Charles Spillane
National University of Ireland Galway
Total Publications: 43
 
3
R. D. Evans
Teagasc
Total Publications: 44
 
4
D.A. Kenny
Teagasc
Total Publications: 147
 
5
T Sweeney
University College Dublin
Total Publications: 138
 
6
Alan K Kelly
Teagasc
Total Publications: 88
 
7
Stephen D. E. Park
University College Dublin
Total Publications: 35
 
8
D P Berry
Teagasc
Total Publications: 243