Effect Of Different Slaughter Month-old On Meat Quality In Bamei×Dorper Cross Breeding Meat Sheep

The Inner Mongolia autonomous region, which owns at the top of sheep resources and breeds, which is rich in mutton production capacity compared with other districts in our country. By means of developing new sheep breed and enhancing mutton quality. We could not only increase farmers’profit but also promote improved sheep varieties process, which is the power to help Inner Mongolia autonomous region’s sheep cultivation industry stay competitive. Mutton quality can be influenced by various factors.The influence of sheep age to mutton quality is closely tied up with farmers’interests. Choosing proper slaughter time is the key of saving feeding resources as well as assures mutton quality and avoids wasting of costings. The objective of this study was to effect of different slaughter month-old on meat quality in Bamei×Dorper cross breeding meat sheep, this experiment lasting for one year and one hundred Bamei×Dorper cross breeding meat sheep with using the same feeding management and diet before slaughter experiment was chosen and six samples at different month-old were randomly selected to slaughter. The results shows as follows:1. Meat sheep fattened to 6 months showed an average weight of 44.8Kg and when continue fattened to 12 month-old, its weight have reached 56.34,the dressing percentage is 51.49% at 6 month-old and 41.98% at 12 month old. The dressing percentage in 6 month-old have significantly increased compared to 12 month-old’ sheep (P<0.05). Other slaughter performance and body sizes indexes have no significant different(P>0.05).2. The tenderness in sheep which were slaughtered at 6 month-old were significantly higher compared with 12 month-old’s (P<0.05),but other objective meat quality indexes tested have no significant difference(P>0.05).3. Sheep slaughtered at 6 month-old’appeared to have significantly higher amount of Glutamic acid and Methionine in longissimus than that of 12 month old’s (P<0.05).But other amino acid contents were not significantly altered between two groups(P< 0.05). Fatty acids, inosine acids and fat contents have difference in numbers but have no significant difference in different month-old Bamei sheep X Dorper cross breeding meat sheep(P<0.05).