饲粮能量水平对荷斯坦阉牛生产性能、血液指标、屠宰性能及肉品质的影响

张美琦,李妍,李树静,高艳霞,李建国,曹玉凤,李秋凤

Effects of Dietary Energy Levels on Production Performance, Blood Index, Slaughter Performance and Meat Quality of Holstein Steers

ZHANG MeiQi,LI Yan,LI ShuJing,GAO YanXia,LI JianGuo,CAO YuFeng,LI QiuFeng

表6 饲粮能量水平对荷斯坦阉牛肉品质及背最长肌肉常规成分的影响

Table 6 Effects of energy levels in diets on the quality of Holstein steers beef and conventional components of longest back muscles

项目 Items 组别Groups SEM P LE ME HE pH24h 5.56 5.56 5.58 0.038 0.701 蒸煮损失Drop loss (%) 26.30 28.69 26.82 1.381 0.204 剪切力Shear force (kg) 3.54 3.46 3.39 0.158 0.643 失水率Dehydration rate (%) 30.90 32.35 33.34 1.609 0.325 色差Colorimetric values L* 36.66 37.03 37.66 1.358 0.761 A 23.65 24.71 24.96 1.175 0.503 B 11.98 12.28 12.75 0.784 0.619 水分 Water (%) 69.71 71.38 68.10 1.805 0.226 粗蛋白质 CP (%) 19.95 19.29 20.02 1.117 0.770 粗脂肪 EE (%) 7.69b 7.47b 11.73a 1.428 0.015