Prioritization based on neutral genetic diversity may fail to conserve important characteristics in cattle breeds

Hall, S. J. G. and Lenstra, J. A. and Deeming, D. C. (2012) Prioritization based on neutral genetic diversity may fail to conserve important characteristics in cattle breeds. Journal of Animal Breeding & Genetics, 129 (3). pp. 218-225. ISSN 1439-0388

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1439-...

Abstract

Conservation of the intraspecific genetic diversity of livestock species requires protocols that assess between-breed genetic variability and also take into account differences among individuals within breeds. Here, we focus on variation between breeds. Conservation of neutral genetic variation has been seen as promoting, through linkage processes, the retention of useful and potentially useful variation. Using public information on beef cattle breeds, with a total of 165 data sets each relating to a breed comparison of a performance variable, we have tested this paradigm by calculating the correlations between pairwise breed differences in performance and pairwise genetic distances deduced from biochemical and immunological polymorphisms, microsatellites and single-nucleotide polymorphisms. As already observed in floral and faunal biodiversity, significant positive correlations (n = 54) were found, but many correlations were non-significant (n = 100) or significantly negative (n = 11). This implies that maximizing conserved neutral genetic variation with current techniques may conserve breed-level genetic variation in some traits but not in others and supports the view that genetic distance measurements based on neutral genetic variation are not sufficient as a determinant of conservation priority among breeds.

Item Type:Article
Keywords:cattle, genetic resources, livestock biodiversity, prioritization
Subjects:C Biological Sciences > C400 Genetics
D Veterinary Sciences, Agriculture and related subjects > D300 Animal Science
Divisions:College of Science > School of Life Sciences
ID Code:4645
Deposited By: Sarah Lunt
Deposited On:26 Aug 2011 07:57
Last Modified:02 Sep 2014 09:21

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