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Comparative studies on the histochemical properties of M. iliotibialis lateralis from Kumamoto Cochin crossbred roaster and broiler chickens |
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| Authors: | H Iwamoto Y Fukumitsu M Matsuzaki Y Takemoto S Morita H Takahara |
| Institution: | 1. Faculty of Agriculture , Kyushu University , Higashi‐ku, Fukuoka‐shi, 812–81, Japan;2. Kumamoto Prefectural Agricultural Research Center , Japan |
| Abstract: | 1. Histochemical properties of M. iliotibialis lateralis were compared between Kumamoto Cochin (a Japanese native breed) crossbred roasters (KC roasters, 112 d of age) and normal broilers (56 d of age). 2. Myofibres were divided into Types II‐R, II‐I and II‐W showing high, moderate and low reduced nicotinamide adenine dinucleotide dehydrogenase (NADH‐DH) activities, respectively. 3. Subsarcolemmal formazan granules indicating very strong NADH‐DH activity in Type II‐R fibres were observed only in KC roasters. In both sexes the percentage of Type II‐R fibres present was greater in KC roasters than in broilers. 4. These results indicated marked differences in histochemical properties and meat quality between KC roasters and broilers. |
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