title: Genome-wide association QTL mapping for teat number in a purebred population of Duroc pigs.
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.
authors.affiliation: Animal Genome Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-8602, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Arakawa
authors.affiliation: Animal Research Division, Institute of Japan Association for Techno-innovation in Agriculture, Forestry and Fisheries, 446-1 Ippaizuka, Kamiyokoba, Tsukuba, Ibaraki, 305-0854, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Okumura
authors.affiliation: Animal Genome Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-8602, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Taniguchi
authors.affiliation: Agroinformatics Division, National Agriculture and Food Research Organization, Agricultural Research Center, 3-1-1 Kannondai, Tsukuba, Ibaraki, 305-8666, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hayashi
authors.affiliation: Central Research Institute for Feed and Livestock ZEN-NOH (National Federation of Agricultural Cooperative Associations), Kamishihoro, Hokkaido, 080-1406, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Hirose
authors.affiliation: Central Research Institute for Feed and Livestock ZEN-NOH (National Federation of Agricultural Cooperative Associations), Kamishihoro, Hokkaido, 080-1406, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Fukawa
authors.affiliation: Central Research Institute for Feed and Livestock ZEN-NOH (National Federation of Agricultural Cooperative Associations), Kamishihoro, Hokkaido, 080-1406, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Ito
authors.affiliation: Advanced Genomics Laboratory, National Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, 305-8634, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: Animal Genome Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-8602, Japan.|Animal Immune and Cell Biology Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-8602, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Uenishi
authors.affiliation: Animal Genome Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-8602, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Mikawa
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D001947:Breeding; D002874:Chromosome Mapping; D005260:Female; D005819:Genetic Markers; D055106:Genome-Wide Association Study; D008098:Litter Size; D008321:Mammary Glands, Animal; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D040641:Quantitative Trait Loci; D034421:Sus scrofa / Q000145:classification / Q000235:genetics*
chemical_list: D005819:Genetic Markers
keywords: Bayesian method; genome-wide association study; swine