Comparison of Growth and Slaughtering Performances and Meat Quality Differences of Xinjiang Brown Cattle of Different Generations
[Objective]This study was aimed to provide data reference for the quality breeding of Xinjiang Brown cattle by comparing the differences in growth performance and slaughter performance of three generations,and analyzing the quality differences of the striploin,eye round and chuck tender.[Method]A total of 313 Xinjiang Brown cattle bulls that reached 24-month-old(24m)and 30-month-old(30m)of age after 200 days of fattening were measured,and they were grouped into 6 groups according to generation class,marking as G1-24m(n=101),G2-24m(n=75),G3-24m(n=20),G1-30m(n=53),G2-30m(n=44)and G3-30m(n=20).Eight bulls of each group were randomly selected for slaughter performance measurement,and the physicochemical properties,nutrient components and texture parameters of striploin,eye round and chuck tender in Xinjiang Brown cattle were analyzed.[Result]The chest width,hip width,pin bone width,carcass weight,lean meat weight and bone weight of bulls in G3-30m group were significantly higher than those in G1-30m and G2-30m groups(P＜0.05).Compared with the Evaluation Standard for New Types of Xinjiang Brown cattle(DB65/T 3791-2015),the relative growth rate of G1-24m,G2-24m and G3-24m was positive except for the body height growth of G1-24m by-0.53％,the waist angle width by-0.64％,and the waist angle width of G2-24m by-1.18％.In terms of meat quality,the tenderness of striploin was better than that of eye round and chuck tender,but the water holding capacity of striploin was poorer.There was no significant difference in the palatability among three parts(P＞0.05).[Conclusion]Through selective breeding,the growth and meat production performance of Xinjiang Brown cattle were significantly improved,which was reflected in the enlargement of physique,increased chest circumference and compact body size.
Xinjiang Brown cattlegrowth performancemeat performancemeat quality
万方数据
维普
