Abstract
Summary The experiment involved 40 female Japanese quail ( Coturnix japonica) slaughtered at 8 weeks of age. The study was arranged to determine slaughter traits, physicochemical properties and microstructure characteristics of Pectoralis major muscle as related to the different dressing percentages, and to examine the correlation between tested parameters. The results show that dressing percentage significantly affected carcass and Pectoralis major muscle weight, acidity and the content of crude fat, dry matter and soluble collagen. Dressing percentage did not influence the number of fast-twitch oxidative-glycolytic muscle fibres, cross-section area for slow-twitch oxidative fibres and aerobic index. Dressing percentage was positively and significantly correlated with the number of fibres and capillaries per bundle, the quantity of fast-twitch glycolytic fibres, cross-section area for fast-twitch oxidative-glycolytic fibres, anaerobic index and fat content in the muscle. Only in the case of the number of slow-twitch oxidative fibres the correlation coefficient was negative and the relationship with dressing percentage significant. It is concluded that it is possible to obtain high-quality meat with increased dressing percentage from 8-week-old female Japanese quail.
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