Animal & Grassland Research & Innovation Programme >
Animal & Bioscience >
Please use this identifier to cite or link to this item:
|Title: ||A catalogue of validated single nucleotide polymorphisms in bovine orthologs of mammalian imprinted genes and associations with beef production traits|
|Authors: ||Magee, D. A.|
Berkowicz, Erik W
Sikora, K. M.
Berry, Donagh P.
Park, S. D. E.
Kelly, A. K.
Kenny, David A.
Evans, R. D.
Wickham, B. W.
MacHugh, D. E.
|Issue Date: ||Jun-2010|
|Publisher: ||Cambridge University Press|
|Citation: ||D. A. Magee, E. W. Berkowicz, K. M. Sikora, D. P. Berry, S. D. E. Park, A. K. Kelly, T. Sweeney, D. A. Kenny, R. D. Evans, B. W. Wickham, C. Spillane and D. E. MacHugh (2010). A catalogue of validated single nucleotide polymorphisms in bovine orthologs of mammalian imprinted genes and associations with beef production traits. animal, 4, pp 1958-1970. doi:10.1017/S1751731110001163.|
|Series/Report no.: ||Animal: The International Journal of Animal Biosciences;vol 4|
|Abstract: ||Genetic (or ‘genomic’) imprinting, a feature of approximately 100 mammalian genes, results in monoallelic expression from one
of 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 several
economically 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 cattle
samples comprising 138 performance-tested European Bos taurus (all Limousin bulls), 29 African B. taurus and 18 Indian B. indicus
samples. Analysis of the resulting genotypic data identified 117 validated SNPs. Preliminary genotype–phenotype association
analyses using 83 SNPs that were polymorphic in the Limousin samples with minor allele frequencies >0.05 revealed significant
associations 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.|
|Appears in Collections:||Animal & Bioscience|
Items in T-Stor are protected by copyright, with all rights reserved, unless otherwise indicated.