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Genome‐wide association QTL mapping for teat number in a purebred population of Duroc pigs |
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| Authors: | A Arakawa N Okumura M Taniguchi T Hayashi K Hirose K Fukawa T Ito T Matsumoto H Uenishi S Mikawa |
| Institution: | 1. Animal Genome Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan;2. Animal Research Division, Institute of Japan Association for Techno‐innovation in Agriculture, Forestry and Fisheries, Tsukuba, Ibaraki, Japan;3. Agroinformatics Division, National Agriculture and Food Research Organization, Agricultural Research Center, Tsukuba, Ibaraki, Japan;4. Central Research Institute for Feed and Livestock ZEN‐NOH (National Federation of Agricultural Cooperative Associations), Kamishihoro, Hokkaido, Japan;5. Advanced Genomics Laboratory, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan;6. Animal Immune and Cell Biology Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, Japan |
| Abstract: | Because of increasing litter size in Western pig breeds, additional teats are desirable to increase the capacity for nursing offspring. We applied genome‐wide SNP markers to detect QTL regions that affect teat number in a Duroc population. We phenotyped 1024 animals for total teat number. A total of 36 588 SNPs on autosomes were used in the analysis. The estimated heritability for teat number was 0.34 ± 0.05 on the basis of a genomic relationship matrix constructed from all SNP markers. Using a BayesC method, we identified a total of 18 QTL regions that affected teat number in Duroc pigs; 9 of the 18 regions were newly detected. |
| Keywords: | Bayesian method genome‐wide association study swine |