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2 饲粮能量水平对荷斯坦阉牛生产性能的影响

Table 2 Effects of energy levels in diets on Holstein steers production performance

项目 Items 组别Groups SEM P LE ME HE 初始体重 Initial weight (kg) 653.33 653.69 654.17 13.573 0.998 试验前期末重Final weight of early stage of trial (kg) 746.50 750.40 767.07 16.438 0.422 试验后期末重 Final weight of later stage of trial (kg) 906.17 905.62 922.50 23.252 0.714 试验前期 Early stage of trial 日增重 ADG (kg) 1.07b 1.11b 1.30a 0.070 0.006 平均干物质采食量 ADMI (kg) 12.64 12.80 14.25 0.831 0.182 料重比 F/G 11.86 11.51 10.94 0.574 0.284 试验后期 Later stage of trial 日增重 ADG (kg) 1.01 0.98 0.98 0.060 0.879 平均干物质采食量 ADMI (kg) 14.26 13.79 14.28 0.341 0.264 料重比 F/G 14.17 14.14 14.63 0.772 0.784 全期 Whole stag 日增重 ADG (kg) 1.03 1.01 1.10 0.056 0.266 平均干物质采食量 ADMI (kg) 14.13 13.75 14.34 0.296 0.140 料重比 F/G 13.77 13.72 13.18 0.633 0.594