生长期西藏白绒山羊能量和蛋白质需要量研究  

Energy and Protein Requirements of Growing Tibet White Cashmere Goats

作　　者：吴玉江[1] 德吉[1] 王磊[2,3] 吴国芳 张晓卫 次仁德吉[1] 索朗达[1] 巴贵[1] 达瓦[4] 旦增扎巴 次仁美朵 扎西次仁 WU Yujiang;Deji;WANG Lei;WU Guofang;ZHANG Xiaowei;Cirendeji;Suolangda;Bagui;Dawa;Danzengzhaba;Cirenduomei;Zhaxiciren(Institute of Animal Husbandry and Veterinary Medicine,Tibet Academy of Agriculture and Animal Husbandry Science,Lhasa,Tibet 850009;Qinghai Academy of Animal Science and Veterinary Medicine,Qinghai University,Xining,Qinghai 810016;State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Xining,Qinghai 810016;Nyima White Cashmere Goat Breeding Farm,Nagqu,Tibet 852000;Nyima Veterinary Prevention Station,Nagqu,Tibet 852000;Nyima Science and Technology Service Station of Agriculture and Animal Husbandry,Nagqu,Tibet 852000)

机构地区：[1]西藏自治区农牧科学院畜牧兽医研究所,西藏拉萨850009 [2]青海大学青海省畜牧兽医科学院,青海西宁810016 [3]青海大学省部共建三江源生态与高原农牧业国家重点实验室,青海西宁810016 [4]西藏那曲地区尼玛县白绒山羊原种场,西藏那曲852000 [5]西藏那曲地区尼玛县兽防站,西藏那曲852000 [6]西藏那曲地区班戈县农牧科学技术服务站,西藏那曲852000

出　　处：《家畜生态学报》2018年第12期31-37,共7页Journal of Domestic Animal Ecology

基　　金：西藏财政厅项目(XZNKY-2018-C-030);现代农业产业技术体系建设专项(CARS-39-32)

摘　　要：为了确定生长期西藏白绒山羊的能量、蛋白质需要量,本研究以24只体重相近、健康状况良好的3月龄西藏绒山羊母羊为研究对象,按消化能和粗蛋白两因子2×3水平的试验设计随机分为6组,进行为期90d的饲养试验和14d的消化代谢试验。结果表明:(1)日粮能量水平可显著增加试验羊的日增重(P<0.05);日粮蛋白水平对末期体重、日增重和干物质采食量均有极显著影响(P<0.01);日粮能量和蛋白水平对日增重和干物质采食量有显著的互作效应(P<0.05)。(2)日粮蛋白水平可极显著地影响氮代谢(P<0.01);日粮能量和蛋白水平仅对粪氮有显著的互作效应。(3)日粮能量水平对食入总能、甲烷能、总能消化率和总能代谢率有显著影响(P<0.05);日粮蛋白水平对甲烷能、总能消化率和总能代谢率有显著影响(P<0.05);日粮能量和蛋白水平对食入总能、甲烷能、总能消化率、总能代谢率和消化能代谢率有显著的互作效应(P<0.05)。因此,生长期西藏白绒山羊日粮适宜的消化能和代谢能水平分别为11.09～12.03MJ/kg和9.42～10.13MJ/kg,适宜的粗蛋白和可消化粗蛋白水平分别为10.35%～11.29%和5.74%～6.47%。In order to determine energy and protein requirements of growing Tibet white cashmere goats,twenty-four 4-month old and healthy Tibet white cashmere ewes with similar body weight were taken as the research objects,and were randomly divided into 6 groups by a two factors(DE×CP)with 2×3 levels experiment design,and each group had 4 replicates with 1 goat per replicate to carry out the feeding trial lasted for 90d and the digestive and metabolic trial lasted for 14d.The results show as follows:Energy level in diet could significantly increase average daily gain(ADG)(P<0.05).Protein level in diet extremely and significantly affected TBW,DMI and ADG(P<0.01).There is significant interaction on DMI and ADG between energy and protein levels in diet.Protein level in diet could extremely and significantly affect the N metabolism(P<0.01).There is only significant interaction on fecal N between energy and protein levels in diet.Energy level in diet has significant effects on intake gross energy(GE),CH 4 energy,GE digestibility and metabolic rate(P<0.05).Protein level in diet significantly affects CH 4 energy,GE digestibility and metabolic rate(P<0.05).There is significant interaction on CH4 energy,GE digestibility and metabolic rate,DE metabolic rate and intake GE(P<0.05)between energy and protein levels in diet.In a word,the proper range of DE and ME levels in diet of growing Tibet white cashmere goats are 11.09~12.03 MJ/kg to 9.42~10.13 MJ/kg,respectively,and the appropriate CP and digestible CP levels are 10.35%~11.29%to 5.74%~6.47%,respectively.

关 键 词：西藏白绒山羊 生长期 能量 蛋白 需要量 

分 类 号：S811.5[农业科学—畜牧学]