1.美国NRC建议的小中大型成年体重基因型羔羊的净能需要a
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| 小型成年体重羔羊d
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a:成年公羊体重分别为95kg,115kg和135kg左右;
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b:体重和增重包括胃肠内容物;
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c:NEm=0.23MJ,W0.75*d-1
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d:NEg=1.33MJ,W0.75*LWG,kg*d-1
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e:NEg=1.15MJ,W0.75*LWG,kg*d-1;
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f:NEg=0.98MJ,W0.75*LWG,kg*d-1;
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2.美国NRC建议的小,中,大型成年体重基因型羔羊的粗蛋白质需要量
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a:成年公羊体重分别为95kg,115kg和135kg左右; | | | | | |
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3.美国NRC建议的绵羊的常量元素需要(占日粮干物质百分比)
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注:1.数值由试验数据估计;
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2.在某些情况下更低的水平也会中毒。
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4.美国NRC建议的绵羊的微量元素需要和最大耐受水平(mg/kg日粮干物质)a
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a:数值由试验数据估计;
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e:在某些情况下更低的水平也会中毒。
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5.美国NRC公布的母羊乳成分(产后2.5周)示例
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| 110/100*22.97/10000=25.27 |
主要盐(g/100g)
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常量或微量元素(mg/L)
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维生素
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