黒毛和種,褐毛和種およびホルスタイン種の去勢雄牛間での筋線維型構成に関する比較検討

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タイトル別名
  • Comparative Studies on the Composition of Muscle Fiber Types in Japanese Black, Japanese Brown and Holstein Steers
  • クロゲワシュ カツモウワシュ オヨビ ホルスタインシュ ノ キョセイ オウシカ

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抄録

Comparative studies on histochemical fiber type composition were carried out on eighteen skeletal muscles in six Japanese black, five Japanese brown and five Holstein steers. Muscle materials were excised and made into serial frozen cross sections which were stained with histochemical reactions for ATPase and NADH-dehydrogenase activity. Muscle fibers were distinguished into type βR, αR and αW fibers according to the nomenclature of ASHMORE et al.2).M.longissimus thoracis, M. biceps femoris, M. semimembranosus, M. triceps brachii/Caput longum, M. semitendinosus and M. gluteus medius, which play an important role in producing meats in quantity because of their larger weights, were composed of all three types of fiber and exhibited obvious differences between the Black and other two breeds in the percentage distribution of each type of fiber. The larger percentage of αW fibers was observed in the Brown and Holstein, and conversely the larger percentage of βR or αR fibers was observed in the Black than in any other breed. The Black had larger βR fibers in higher frequency than the other two breeds did in M. longissimus thoracis, M. semimembranosu, M. triceps brachii/Caput longum, M. gluteus medius, and M. vastus medialis. The results of this experiment show that these muscles of the Blaek have a different fiber type composition from those of the other two breeds. Good potential for quantitative meat production of the highest grade of meat, such as loin and fllet which are mainly composed of M. longissimus thoracis and M. iliopsoas respectively, was indicated by the Brown, but not by the Holstein.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 62 (7), 674-682, 1991

    公益社団法人 日本畜産学会

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