大薯在鸡日粮中能量及常规养分营养价值评定  

Nutritional evaluation of energy and crude nutrition of Dioscorea alata L.in fowls diets

作　　者：王学梅[1] 许丽[1] 黄东益[2] 杨雨辉[2] 

机构地区：[1]东北农业大学动物科技学院 [2]海南大学农学院

出　　处：《中国饲料》2013年第23期5-8,共4页China Feed

基　　金：海南省重点科技项目(ZDXM2012002);海口市重点科技项目(2011-0119)

摘　　要：本试验采用真代谢能(TME)法研究成年公鸡对大薯能量及常规养分的利用,以评价大薯对鸡的营养价值。试验结果表明:大薯总能为16.07 MJ/kg,表观代谢能为13.29 MJ/kg,真代谢能为13.31 MJ/kg;大薯中养分含量分别为干物质90.41%、粗蛋白质3.94%、粗灰分4.91%、粗脂肪2.51%、钙0.09%、总磷0.21%;大薯养分表观代谢率分别为干物质73.62%、总能82.67%、粗蛋白质75.59%、粗灰分71.81%、粗脂肪34.26%、钙18.08%、总磷-25.44%;大薯养分真代谢率分别为干物质76.29%、总能82.82%、粗蛋白质83.92%、粗脂肪44.64%、粗灰分54.31%、钙33.38%、总磷41.34%。此外,通过对比研究表明,大薯的总能是玉米的95.99%,且能量代谢率与玉米相当,属良好能量饲料。大薯的粗蛋白质含量较低,钙、磷、粗脂肪利用率低,作为能量饲料原料配制饲粮,应补充适量的蛋白质及钙、磷等矿物质,以达到理想生产效果。[Abstract] The experiment was conducted to determine the engeny and crude nutrient value of Dioscorea alata L.in the fowl by true metabolizable energy （TME）.The results showed that：the gross energy （GE） was 16.07 MJ/kg,apparent metabolizable energy （AME） values was 13.29 MJ/kg, TME values was 13.31 MJ/kg ;the nutritional contents of Dioscorea a/ata L. were ：dry matter （DM）90.41% ,crude protein （CP）3.94% ,crude ash （Ash）4.91% ,crude fat （EE）2.51% ,calcium （Ca）0.09% ,total phosphorus （P）0.21% ;the apparent metabolic rate of Dioscorea alata L.were：DM 73.62% ,GE 82.67%, CP 75.59% ,Ash 71.81%,EE 34.26%, Ca 18.08% ,P 25.44%,respectively; the true metabolic rate of DM, GE, CP,Ash, EE,Ca,P was respectively 76.29% ,82.82% ,83.92% ,44.64% ,54.31% ,33.38% ,41.34%.The GE of Dioscorea alata L.was 95.99% of corn,the metabolizable rate of energy approached to that of corn,which was a good energy feedstuff.But the crude protein content in Dioscorea alata L.and utilization rate of alcium,phosphorus,crude fat were low,so protein feed and calcium, phosphorus and other minerals should be supplied to meet the animals requirement as a kind of energy.

关 键 词：大薯 鸡 能量 常规养分 代谢率 

分 类 号：S816.4[农业科学—饲料科学]