关键词: 扬州鹅, 扬州鹅, 杂交配套组合, 体重, 体尺, 羽绒产量, 相关分析

Abstract: The study aims to compare the differences of muscle fiber area in different parts of Xinjiang brown cattle and local yellow cattle, and provide a basis for the studying the formation of meat quality of Xinjiang brown cattle. Three 2.5-3 year-old and healthy Xinjiang brown cattle and local yellow cattle under the same feeding conditions were selected to conduct the experiment, respectively. Muscle tissue samples were collected in tenderloin, silverside, sinew meat, chuck tender, topside, highrib, rump, cucumber, brisket, ribeye, etc. And the techniques of frozen tissue section, HE staining and Motic Image Advanced 3.2 software were used to measure the cross-sectional area of muscle fiber. The results showed that the average cross-sectional area of muscle fiber of topside and cucumber in Xinjiang brown cattle were significantly smaller than that in local yellow cattle (P <0.05). However, the average cross-sectional area of muscle fiber in sinew meat, tenderloin, highrib, rump and brisket in Xinjiang brown cattle were significantly bigger than that in local yellow cattle (P < 0.05). There was no difference in the average cross-sectional area of muscle fibers in other parts between Xinjiang brown cattle and local yellow cattle. In conclusion, cross-sectional areas of muscle fibers had diverse differences in different parts between Xinjiang brown cattle and local yellow cattle.