中国雲南省の黄牛の乳蛋白変異

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タイトル別名
  • Milk Protein Variations in Yellow Cattle in Yunnan, China
  • チュウゴク ウンナンショウ ノ コウギュウ ノ ニュウタンパク ヘンイ エイブ

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説明

Milk protein variations were examined in four local breeds of yellow cattle (Zhaotong cattle, Wenshan cattle, Dali cattle and Banna cattle) in Yunnan province, China. Simultaneous phenotyping by thin-layer polyacrylamide gel isoelectric focusing on 81 samples detected five molecular types of/β lactoglobulin(A, B, E, Y and Z), three molecular types of αs1-casein(B, C and X), four molecular types of β-casein (A1, A2, A3 and.B), and three molecular types ofκ-casein (A, B and Y). Though there was little difference in the types of predominant alleles of milk protein loci, their frequencies varied among local breeds. Mean heterozygosity was high in Zhaotong cattle (36%) and Wenshan cattle (45%) but low in Banna cattle (20%). The result of principal component analysis supported the "intermediate hypothesis" which regards the yellow cattle as an intermediate between Indian and European cattle. The proximity to Indian and European cattle was different among local Yunnan breeds. Zhaotong cattle was close to Europe-an breeds whereas Wenshan, Dali and Banna cattle were close to Indian breeds.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 65 (10), 911-917, 1994

    公益社団法人 日本畜産学会

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