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No.30 (1983/11) >

 
Title :黒毛和種の審査得点の統計遺伝学的分析(畜産学科)
Title alternative :Statistical genetic analysis of judged score in Japanese Black Cattle (Department of Animal Science)
Authors :新城, 明久
Authors alternative :Shinjo, Akihisa
Harvey, Walter R.
Issue Date :19-Nov-1983
Abstract :1973年から1977年の5年間に沖縄県家畜改良協会に登録された, 基本登録雌牛4,584頭について登録時に審査記載された減率と総得点を産地, 飼養地, 年次および季節間で比較した。さらに遺伝的パラメターも推定した。群全体の最小自乗平均値と標準誤差は, 体積・均称23.27±0.06%, 資質・品位22.38±0.05%, 中躯22.52±0.07%, 尻23.41±0.06%, 腿24.00±0.06%および76.92±0.05%であった。総得点について沖縄県内産牛を比較すると, 宮古島, 伊是名島, 石垣島および久米島が優れ, 竹富町, 沖縄島, 与那国島および伊江島が劣っていた。県外産では, 鹿児島県, 広島県および岡山県が優れ, 鳥取県と島根県が劣っていた。飼養地間においては, 伊江島, 久米島および沖縄島が優れ, 与那国, 石垣島, 伊平屋島および宮古島が劣っていた。年次間では年次の進行につれて総得点は着実に増加した。季節間では夏子が秋子に比較し優れていた。減率間の表型相関は0.439∿0.719で, 遺伝相関は0.445∿0.988であった。総得点と減率の間には-0.724∿-0.863の表型相関と-0.674∿-0.979の遺伝相関があった。遺伝率と標準誤差は体積・均称0.211±0.044,資質・品位0.095±0.039,中躯0.146±0.041,尻0.275±0.046,腿0.225±0.044および総得点0.192±0.043といずれも比較的低かった。
Differences in the judged scores, the five deduction for lack of charactaristics and a final score of Japanese Black Cattle were compared for places of birth and raising, years and seasons on 4,584 heifers which had been registered in the Okinawa Animal Breeding Association from 1973 to 1977. Genetic parameters were estimated for judged scores Leastsquares overall means and heritability with standard errors for six traits, body capacity and proportion, quality and impressiveness, middle part of body, rump, thigh and final score were 23.27±0.06%; 0.21±0.044; 22.38±0.05%; 0.095±0.039,22.52±0.07%; 0.146±0.041,23.41±0.06%; 0.275±0.046,24.00±0.06%; 0.225±0.044 and 76.92±0.05%; 0.192±0.043,respectirely. Final scores of cattle born in Miyako, Izena, Ishigaki and Kume islands were higher than those born in Taketomi, Okinawa, Yonaguni and Ie islands. In the heifers that were born in Japan proper and brought into Okinawa prefecture, the scores for heifers born in Kagoshima, Hiroshima and Okayama prefectures were higher than those born in Tottori and Shimane prefectures. On comparison of final scores of heifers among places of raising, the final scores of heifers born in Ie, Kume, and Okinawa islands were higher than those born in Yonaguni, Ishigaki, Iheya and Miyako islands. The final scores increased linearly with years. The scores of heifers born in summer were higher than those born in autumn. Phenotypic and genetic correlations among the deduction for lack of charactalistics varied from 0.439 to 0.719 and 0.445 to 0.988,respectively. Those correlations between the deduction for lack of charactaristics and final score varied from -0.724 to -0.864 and -0.674 to -0.979,respectively.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/4006
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.30 p.507 -512
Appears in Collections:No.30 (1983/11)

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