Genetic correlations between the performance of purebred and crossbred pigs

Author(s)
Nakavisut, Sansak
Crump, Ronald Edward
Suarez, Matias
Graser, Hans-Ulrich
Publication Date
2005
Abstract
Genetic correlations between purebred Duroc (DU), Large White (LW) and Landrace (LR) pigs and their crossbreds LWxLR, LRxLW, DUx(LWxLR) and DUx(LRxLW) were estimated for production and reproduction traits. Performance test and litter records from Government pig breeding stations in Thailand were used. REML bivariate animal models were used to estimate genetic correlations for each trait measured in purebreds and in crossbreds. Production traits tended to have very high genetic correlations (0.66 – 0.96) between purebreds and crossbreds, whereas reproduction traits tended to have low to moderate genetic correlations (0.21 – 0.52). The breeding procedure to improve production traits of crossbred pigs using genetic evaluation and selection based on purebred records is verified by the results of this study due to the high genetic correlations. However, for reproduction traits, purebred records seem to be less relevant for use to improve crossbred reproduction traits because of low genetic correlations between purebreds and crossbreds. Therefore, a joint genetic evaluation of purebred and crossbred records is recommended to improve reproduction traits in crossbred sows.
Citation
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.16, p. 99-102
ISBN
064309234X
0643092331
ISSN
1328-3227
Link
Title
Genetic correlations between the performance of purebred and crossbred pigs
Type of document
Conference Publication
Entity Type
Publication

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