【摘 要】
：
本试验旨在研究日粮中添加不同水平甘草茎叶饲喂育肥期肉羊对其生产性能及经济效益的影响.试验选取6月龄,体重(40±2.5)kg 的阿勒泰肉羊60只,采用单因素完全随机试验设计,随机分为6组,每组10只羊,分别为60％、30％、20％、15％、10％和0％甘草茎叶添加水平.试验发现:(1)对照组日增重比处理组都高,但差异均不显著(P﹥0.05).干物质采食量30％添加组分别比10％添加组、15％添加组
【机 构】
：
新疆畜牧科学院饲料研究所,新疆乌鲁木齐 830000;新疆农业大学动物科学学院,新疆乌鲁木齐 830052;中国农业科学院饲料研究所,农业部饲料生物技术重点实验室,北京 100081
论文部分内容阅读
本试验旨在研究日粮中添加不同水平甘草茎叶饲喂育肥期肉羊对其生产性能及经济效益的影响.试验选取6月龄,体重(40±2.5)kg 的阿勒泰肉羊60只,采用单因素完全随机试验设计,随机分为6组,每组10只羊,分别为60％、30％、20％、15％、10％和0％甘草茎叶添加水平.
试验发现:(1)对照组日增重比处理组都高,但差异均不显著(P﹥0.05).干物质采食量30％添加组分别比10％添加组、15％添加组、对照组、20％添加组和60％添加组高5.68％(P＜0.01)、5.11％(P＜0.01)、3.98％(P＜0.05)、2.27％和1.14％.料重比随着甘草茎叶的添加量表现为逐渐增加.(2)饲料单位成本随着甘草茎叶的添加量表现为逐渐减少.经济收益为30％添加组＞对照组＞20％添加组＞60％添加组＞15％添加组＞10％添加组.结果表明:(1)日粮干物质中甘草茎叶添加比例为10％和15％时,甘草茎叶的添加并不能有效的影响肉羊采食量的增加,这可能是低剂量的甘草茎叶添加不能起到诱饲的效果;(2)日粮干物质中甘草茎叶添加比例为60％时,采食量和日增重反而低于30％添加组的干物质采食量和日增重.(3)当日粮干物质中添加30％的甘草茎叶时,阿勒泰肉羊的干物质采食量最高,日增重也相应高于其他甘草茎叶添加组;经济收益最高.日粮干物质中20％的甘草茎叶添加比例时,干物质采食量、经济收益次之.
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