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Genotype by mating type interaction for litter size in Landrace and Large White sows

  • T. W. Lewis (a1) (a2), J. Wiseman (a1) and J. A. Woolliams (a2)

Abstract

Data obtained from a detailed base from a commercial breeding company of Landrace and Large White purebred nucleus sows were used to estimate genetic parameters of piglet number born alive (NBA) following artificial insemination and natural service. Heritabilities were small but significantly different from zero, and similar to literature estimates. The genetic correlation (rG) of NBA after AI or natural service using pooled data was 0·71 and was significantly different from one (P<0·01) but not significantly different between breeds (P>0·1). It is concluded that mating type may result in a re-ranking of sow genetic merit for NBA.

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Chen, P., Baas, T. J., Mabry, J. W., Koehler, K. J. and Dekkers, J. C. M. 2003. Genetic parameters and trends for litter traits in US Yorkshire, Duroc, Hampshire, and Landrace pigs. Journal of Animal Science 81: 4653.
Falconer, D. S. and Mackay, T. F. C. 1996. Introduction to quantitative genetics, fourth edition. Longman, Essex.
Gilmour, A. R., Gogel, B. J., Cullis, B. R., Welham, S. J. and Thompson, R. 2002. ASReml user guide release 1·0. VSN International Ltd, Hemel Hempstead.
Haley, C. S., Avalos, E. and Smith, C. 1988. Selection for litter size in the pig. Animal Breeding Abstracts 56: 317332.
Hanenberg, E. H. A. T., Knol, E. F. and Merks, J. W. M. 2001. Estimates of genetic parameters for reproduction traits at different parities in Dutch Landrace pigs. Livestock Production Science 69: 179186.
Kemp, B. and Soede, N. M. 1996. Relationship of weaning-to-estrus interval to timing of ovulation and fertilization in sows. Journal of Animal Science 74: 944949.
Kerr, J. C. and Cameron, N. D. 1995. Reproductive performance of pigs selected for components of efficient lean growth. Animal Science 60: 281290.
Kerr, J. C. and Cameron, N. D. 1996. Genetic and phenotypic relationships between performance test and reproduction traits in Large White pigs. Animal Science 62: 531540.
Lende, T.van der, Willemsen, M. H. A., Arendonk van, J. A. M. and Haandel van, E. B. P. G. 1999. Genetic analysis of the service sire effect on litter size in swine. Livestock Production Science 58: 9194.
Mercer, J. T. and Crump, R. E. 1990. Genetic parameter estimates for reproduction traits in purebred Landrace pigs. Proceedings of the fourth world congress on genetics applied to livestock production, Edinburgh, vol. 15, pp. 489492.
Roehe, R. and Kennedy, B. W. 1995. Estimation of genetic parameters for litter size in Canadian Yorkshire and Landrace swine with each parity of farrowing treated as a different trait. Journal of Animal Science 73: 29592970.
Rydhmer, L., Lundeheim, N. and Johansson, K. 1995. Genetic parameters for reproduction traits in sows and relations to performance-test measures. Journal of Animal Breeding and Genetics 112: 3342.
Serenius, T., Sevón-Aimonen, M. -L. and Mäntysaari, E. A. 2003. Effect of service sire and validity of repeatability model in litter size and farrowing interval of Finnish Landrace and Large White populations. Livestock Production Science 81: 213222.

Keywords

Genotype by mating type interaction for litter size in Landrace and Large White sows

  • T. W. Lewis (a1) (a2), J. Wiseman (a1) and J. A. Woolliams (a2)

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