【摘要】 选 35日龄断奶的杜洛克×长白×嘉兴黑杂交猪 2 7头 ,随机分成 3组。 3组猪的日粮如下 :对照组 :10 0 %精料 ;试验 1组 :90 %精料 + 10 %新鲜黑麦草 ;试验 2组 :80 %精料 + 2 0 %新鲜黑麦草。试验期 110d ,0～ 46d为前期 (断奶～30kg) ;47～ 110d为后期 (30kg～ 6 0kg)。结果表明 :前期试验 1组与对照组相比 ,体增重差异不显著 (P >0 .0 5 ) ,平均每头猪可获利 0 .19元 ;而试验 2组的体增重明显低于对照组 (P <0 .0 5 ) ,平均每头猪的饲养成本反而提高 0 .5 4元。后期试验 1组与对照组相比 ,体增重差异不显著 (P >0 .0 5 ) ,平均每头获利 10 .32元 ;而试验 2组的体增重明显低于对照组(P <0 .0 1) ,平均每头获利 3.12元 ,但也延长了出栏时间 ,降低了生产效率。总的来看 ,前期以不加或少加黑麦草为宜 ;后期以新鲜黑麦草替代 10 %精料取得了较高效益 ,这说明用新鲜黑麦草替代 10 %的精料饲喂生长猪可以降低生产成本 ,提高经济效益 ,是完全可行的更多还原

【Abstract】 Twenty-seven piglets weaned at 35 d of age were randomly assigned to three groups. The proportions of rye grass in the diets were as followed:Control:0 rye grass;GroupⅠ: 10% rye grass;GroupⅡ: 20% rye grass. From d 1 to 46(weaning-30Kg),average daily gain(ADG) was not significantly different between Control and GroupⅠ(P>0.05),ADG of groupⅡ was decreased(P<0.05).The feed/gain(F/G) of GroupⅠ and GroupⅡ decreased. From d 47 to 110(30-60Kg),average daily gain(ADG) was not significantly different between Control and GroupⅠ(P>0.05),ADG of groupⅡ was significantly decreased(P<0.01).The F/G of GroupⅠ and GroupⅡ was significantly lower than that of Control.10.93 and 3.12 yuan per pig were saved in GroupⅠ and GroupⅡ,respectively.The overall results showed that rye grass can be used at level 10% in diet fed to growing pigs.更多还原