美国nrc建议的绵羊营养需要量

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1、美国NRC建议的绵羊营养需要量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体重（kg)b1020253035404550维持净能需要c1.472.222.6233.373.734.074.41日增重(g)b净能需要小型成年体重羔羊d1000.741.261.481.71.912.112.312.491501.121.882.232.552.863.163.463.742001.492.512.963.43.824.224.614.992501.873.143.684.254.775.285.7

2、66.233002.243.774.455.15.726.336.917.48中型成年体重羔羊e1000.651.091.291.481.661.842.012.171500.971.641.942.222.492.753.013.252001.32.182.592.963.323.674.024.342501.622.733.233.74.154.595.025.433001.953.283.874.444.985.516.026.513502.273.824.525.185.826.437.027.64

3、002.64.375.165.926.657.358.028.69大型成年体重羔羊f1000.550.921.11.261.411.561.71.841500.821.391.641.882.112.332.552.762001.11.852.192.512.823.113.43.682501.382.312.743.143.523.894.254.63001.652.783.283.774.234.675.15.523501.933.243.834.394.935.455.956.444002.23.74

4、.385.025.646.236.87.364502.484.174.925.656.347.017.668.28a:成年公羊体重分别为95kg,115kg和135kg左右；b:体重和增重包括胃肠内容物；c:NEm=0.23MJ,W0.75*d-1d:NEg=1.33MJ,W0.75*LWG,kg*d-1e:NEg=1.15MJ,W0.75*LWG,kg*d-1；f:NEg=0.98MJ,W0.75*LWG,kg*d-1；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体重(kg)b102

5、0253035404550日增重(g)b小型成熟体重羔羊10084112122127131136135134150103121137140144147145143200123145152154156158154151250142162167168168169164159300162178182181180180174168中型成熟体重羔羊10085114125130135140139139150106132141145149153151149200127150158160163166163160250147

6、167174175177179175171300168185191191191191186181350188203207206205204198192400209221224221219217210202大型成熟体重羔羊10094128134139145144150156150115147152156160159164169200136166170173176174178182250157186188190192189192195300179205206207208204206208350200224224

7、224224219220221400221243242241240234234234450242262260256256249248248a:成年公羊体重分别为95kg,115kg和135kg左右；b:体重和增重包括胃肠内容物。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）成分需要成分需要钠0.09——0.18镁0.12——0.18氯——钾0.50——0.80钙0.20——0.82硫0.14——0.26磷0.16——0.38注：1.数值由试验数据估计；2.在某些情况下更低的水平也会中毒。4.美

8、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成分需要最大耐受水平成分需要最大耐受水平碘0.10——0.8050锰20——401000铁30——50500锌20——33750铜7——11d25e硒0.1——0.22钼0.510e氟——60——150钴0.1——0.210a:数值由试验数据估计；e:在某些情况下更低的水平也会中毒。5.美国NRC公布的母羊乳成分（产后2.5周）示例干物质（%