Genetic and phenotypic trend for growth performance in Landlly pigs

Abstract

This investigation aimed to evaluate the genetic parameters and trend for growth performance in Landlly pigs. Records of 2,118 piglets, born in 5 generations from 2013 to 2017 were analyzed for body weight at birth and subsequently at 1 week interval up to 8 week. There was a steady increase in body weight over the age from birth (0.96 kg) to 8 week (12.17 kg). The heritability estimate was low (0.112 to 0.129) for body weight at birth and 8 weeks, medium (0.156 to 0.290) for weight at 3 and 32 week and high (0.313 to 0.851) for other weights. Genetic trend was low and ranged from 0.001 (birth weight) to 0.041 kg (weight at 4 week). Phenotypic trend was positive, significant and higher than genetic trend (0.26 kg at birth to 3.36 kg at 8 week). The results showed that growth performance of Landlly pigs at this herd is improving in desired direction.