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- Title
Genetic evaluation of growth and carcass traits for Landrace purebred herds in Taiwan Swine On-Farm Test.
- Authors
Hsu, S. H.; Wu, R. S.; Lin, K. H.; Lin, E. C.
- Abstract
Taiwan swine on-farm test integrates the performance data to conduct the genetic evaluation of growth and carcass traits which provide breeders as the basis for selection, so as to enhance the efficiency and improve the genetic performance of nucleus herd. The tested purebred Landrace from 2014 to 2021 reached 5,777 heads. With their ancestors in pedigree, the data was analyzed to estimate heritability and genetic correlation. There are five traits evaluated in this estimation: D110kg, ADG, BF, LMA and Lean%. If the estimates of genetic parameter (heritability, genetic correlation) and their standard errors are within reasonable range, which will increases accuracy in estimating breeding value (BV). The results showed that the estimated heritability were range from 0.226 to 0.403. The heritability of BF and Lean% were stable, while the D110kg, ADG and LMA are still not reach the reasonable range, but with slightly enhanced. This presents that the genetic parameters would become more rational when the increase in the number tested and stability of testing operation of participating farms. In addition, further regression analysis show when the BV of BF is changed by 1.0 mm, the average BF can be improved by 0.030 mm; however, if the phenotypic value of BF is variated by 1.0 mm, it can only be improved genetically by 0.004 mm. In summary, selection by BV of BF traits will have better improvement in genetic performance.
- Subjects
TAIWAN; LANDRACE swine; ANIMAL herds; SWINE growth; ANIMAL pedigrees; SWINE genetics
- Publication
Journal of the Chinese Society of Animal Science, 2021, Vol 50, p118
- ISSN
0253-9187
- Publication type
Article