title: Allelic frequencies and association with carcass traits of six genes in local subpopulations of Japanese Black cattle.
abstract: Marker-assisted selection (MAS) is expected to accelerate the genetic improvement of Japanese Black cattle. However, verification of the effects of the genes for MAS in different subpopulations is required prior to the application of MAS. In this study, we investigated the allelic frequencies and genotypic effects for carcass traits of six genes, which can be used in MAS, in eight local subpopulations. These genes are SCD, FASN and SREBP1, which are associated with the fatty acid composition of meat, and NCAPG, MC1R and F11, which are associated with carcass weight, coat color and blood coagulation abnormality, respectively. The frequencies of desirable alleles of SCD and FASN were relatively high and that of NCAPG was relatively low, and NCAPG was significantly associated with several carcass traits, including carcass weight. The proportions of genotypic variance explained by NCAPG to phenotypic variance were 4.83 for carcass weight. We thus confirmed that NCAPG is a useful marker for selection of carcass traits in these subpopulations. In addition, we found that the desirable alleles of six genes showed no negative effects on carcass traits. Therefore, selection using these genes to improve target traits should not have negative impacts on carcass traits.
authors.affiliation: Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nishimaki
authors.affiliation: Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Ibi
authors.affiliation: Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.
authors.lastname: Siqintuya
authors.affiliation: Gifu Prefectural Hida Region Livestock Hygiene Service Center, Takayama, Gifu, Japan.
authors.forename: Naohiko
authors.initials: N
authors.lastname: Kobayashi
authors.affiliation: Gifu Prefectural Livestock Research Institute, Takayama, Gifu, Japan.
authors.forename: Tamako
authors.initials: T
authors.lastname: Matsuhashi
authors.affiliation: Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Asago, Hyogo, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Akiyama
authors.affiliation: Northern Center of Agricultural Technology, General Technological Center of Hyogo Prefecture for Agriculture, Forest and Fishery, Asago, Hyogo, Japan.
authors.forename: Emi
authors.initials: E
authors.lastname: Yoshida
authors.affiliation: Hiroshima Prefectural Technology Research Institute, Health and Environment Center, Hiroshima, Japan.
authors.forename: Kazumi
authors.initials: K
authors.lastname: Imai
authors.affiliation: Hiroshima Prefectural Technology Research Institute, Livestock Technology Research Center, Shobara, Hiroshima, Japan.
authors.forename: Mayu
authors.initials: M
authors.lastname: Matsui
authors.affiliation: Kagawa Prefecture Livestock Experiment Station, Kita-gun, Kagawa, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Uemura
authors.affiliation: Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Livestock Research Division, Taketa, Oita, Japan.
authors.forename: Hisayoshi
authors.initials: H
authors.lastname: Eto
authors.affiliation: Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Livestock Research Division, Taketa, Oita, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Watanabe
authors.affiliation: Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Livestock Research Division, Taketa, Oita, Japan.
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Fujita
authors.affiliation: Miyagi Prefectural Livestock Experiment Station, Ohsaki, Miyagi, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Saito
authors.affiliation: Yamagata Prefectural Animal Industrial Institute, Agricultural Research Center, Shinjo, Yamagata, Japan.
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Komatsu
authors.affiliation: Cattle Breeding Development Institute of Kagoshima Prefecture, So, Kagoshima, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hoshiba
authors.affiliation: Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Mannen
authors.affiliation: Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Sasazaki
authors.affiliation: Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Kunieda
mesh_terms: D000818:Animals; D001835:Body Weight / Q000235:genetics; D001947:Breeding / Q000379:methods; D002417:Cattle / Q000235:genetics*; D005227:Fatty Acids; D005787:Gene Frequency / Q000235:genetics*; D056726:Genetic Association Studies / Q000662:veterinary*; D005819:Genetic Markers; D005838:Genotype; D008460:Meat; D010641:Phenotype; D012641:Selection, Genetic
chemical_list: D005227:Fatty Acids; D005819:Genetic Markers
keywords: Japanese Black cattle; allelic frequency; carcass traits; marker-assisted selection