1.美國NRC建議的小中大型成年體重基因型羔羊的凈能需要a
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| 小型成年體重羔羊d
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a:成年公羊體重分別為95kg,115kg和135kg左右;
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b:體重和增重包括胃腸內容物;
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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.美國NRC建議的小,中,大型成年體重基因型羔羊的粗蛋白質需要量
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a:成年公羊體重分別為95kg,115kg和135kg左右; | | | | | |
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3.美國NRC建議的綿羊的常量元素需要(占日糧干物質百分比)
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注:1.數值由試驗數據估計;
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2.在某些情況下更低的水平也會中毒。
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4.美國NRC建議的綿羊的微量元素需要和最大耐受水平(mg/kg日糧干物質)a
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a:數值由試驗數據估計;
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e:在某些情況下更低的水平也會中毒。
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5.美國NRC公布的母羊乳成分(產后2.5周)示例
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| 110/100*22.97/10000=25.27 |
主要鹽(g/100g)
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常量或微量元素(mg/L)
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維生素
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