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Title: Genotyping dead animals improves post-weaning survival of pigs in breeding programs
Contributor(s): Sharif-Islam, M  (author)orcid ; Van Der Werf, J H J  (author)orcid ; Henryon, M (author); Chu, T T (author); Wood, B J (author); Hermesch, S  (author)orcid 
Publication Date: 2022
Open Access: Yes
DOI: 10.3920/978-90-8686-940-4
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A premise was tested that genotyping both surviving and dead pigs will realise more genetic gain in post-weaning survival (PWS) than genotyping only surviving animals. Stochastic simulation was used to estimate the rate of true genetic gain in different genotyping scenarios that differed in varying proportions of genotyping dead animals. Selection was for only PWS that had heritability of 0.02. Mortality was assumed 10%. The trait was controlled by 7,702 biallelic quantitative trait loci distributed across a 30 Morgan genome. We used 54,218 biallelic single nucleotide polymorphisms (SNPs) that were used in genomic prediction. Genotyping both surviving and dead animals realised 12 to 24% more genetic gain than genotyping only surviving animals. The power of detecting SNP effects increased when animals of extreme phenotypes are genotyped. Therefore, genotyping both surviving and dead pigs realised more genetic gain than genotyping only surviving animals.

Publication Type: Conference Publication
Conference Details: 12th World Congress on Genetics Applied to Livestock Production, Rotterdam, Netherlands, 3 – 8 July, 2022
Source of Publication: Proceedings of the 12th World Congress on Genetics Applied to Livestock Production, v.12, p. 3208-3211
Publisher: Wageningen Academic Publishers
Place of Publication: Netherlands
Fields of Research (FoR) 2020: 300305 Animal reproduction and breeding
Socio-Economic Objective (SEO) 2020: 100410 Pigs
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
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Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Conference Publication
School of Environmental and Rural Science

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