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The Thai Journal of Veterinary Medicine

Abstract

Data of purebred Landrace, Large White and their crossbreds taken from a commercial swine farm locatedin the north-eastern part of Thailand were used to evaluate the genetic associations of stillbirth with the total numberof piglets born and gestation length. The analyses were base on 28,275 litters born from 2002 to 2006. Analysis wascarried out with a multivariate animal model using average information REML procedures. Heritability estimates forstillbirth, the total number of piglets born and gestation length were 0.03±0.01, 0.03±0.01 and 0.16±0.01, respectively.The genetic correlation between the total number of piglets born and stillbirth was positive. The genetic correlationbetween the total number of piglets born and gestation length was negative. However, the genetic correlationbetween stillbirth and gestation length was not significantly different from zero. The correlation observed indicatedthat increasing the total number of piglets born through selection could result in more stillbirths and a shortenedgestation length.

Publisher

Faculty of Veterinary Science, Chulalongkorn University

First Page

165

Last Page

172

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