Estimation of Breed Effects on Litter Traits at Birth in Yorkshire and Landrace Pigs

Authors

  • Chittima KANTANAMALAKUL School of Agricultural Extension and Cooperatives, Sukhothai Thammathirat Open University, Pakkred, Nonthaburi 11120
  • Panwadee SOPANNARATH Department of Animal Science, Faculty of Agriculture, Kasetsart University, Bangkok 10900
  • Sornthep TUMWASORN Department of Animal Science, Faculty of Agriculture, Kasetsart University, Bangkok 10900

Keywords:

Pig, litter traits, breed effects

Abstract

The purpose of this study was to estimate breed effects on litter traits at birth in the Yorkshire and Landrace breeds at a commercial swine farm in central Thailand. A total of 14,097 litters from 2002 to 2006 were analyzed using a GLM procedure. The least squares means analysis showed that the mating group between Landrace sows and Yorkshire boars had a significantly (P < 0.05) larger number of live piglets, of heavier weight than purebred piglets. The crossbreeding between the Yorkshire and Landrace breeds resulted in a lower number of mummified and stillborn piglets. Estimation of breed effects found that the effect of the Landrace sows was highly significant (P < 0.01) on the total number of piglets born, number of piglets born alive, number of mummified piglets and litter weight. The breed effect of the Landrace boars was significant (P < 0.05) on the total number of piglets born and highly significant (P < 0.01) on the number of mummified piglets. Heterozygosity coefficient of piglets was highly significant (P < 0.01) increasing the number of piglets born alive (0.30 pigs/litter) and litter weight (0.23 kilograms/litter) while decreasing the number of stillborn piglets (0.16 pigs/litter).

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Published

2011-11-14

How to Cite

KANTANAMALAKUL, C., SOPANNARATH, P., & TUMWASORN, S. (2011). Estimation of Breed Effects on Litter Traits at Birth in Yorkshire and Landrace Pigs. Walailak Journal of Science and Technology (WJST), 4(2), 175–186. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/97