动物营养学报2016，Vol.28Issue(3)：720-730,11.DOI:10.3969/j.issn.1006-267x.2016.03.012
陕北白绒山羊羯羊能量和蛋白质需要量
Energy and Protein Requirements of Shanbei White Cashmere Wether Goats
摘要
Abstract
This experiment was conducted to investigate the requirements of energy and protein of Shanbei white cashmere wether goats so as to provide data for establishing them.Thirty-six healthy one-year-old Shan-bei white cashmere wether goats with similar body weight were randomly divided into 9 groups according to a 3×3 ( energy×protein) completely random experiment design, and each group had 4 replicates with 1 goat per replicate.digestible energy (DE) level in diet was formulated at 100%, 110%and 120%of NRC (1981) rec-ommendation, respectively; and crude protein ( CP) level was formulated at 90%, 110%and 130%of NRC (1981) recommendation, respectively.The pretest lasted for 7 days, and the test lasted for 46 days.The re-sults showed as follows:1) energy level in diet had extremely significant effects on dry matter intake ( DMI) and average daily gain ( ADG) ( P<0.01) , and protein level significantly affected DMI ( P<0.05);there was significant interaction on DMI between energy and protein levels in diet ( P<0.05).2) Digestible nitrogen ( N) in low energy group was significantly lower than that in medium and high energy groups ( P<0.05); N intake, digestible N, retained N, N apparent digestibility in low protein group were extremely lower than those of medium and high protein groups ( P<0.01) .3) Gross energy ( GE) digestibility and metabolic rate were extremely significantly increased with energy level improving ( P<0.01 ); metabolic rates of GE and DE in high protein group were significantly lower than these in low protein group ( P<0.05); There was significant interactions of energy×protein on GE digestibility, GE metabolic rate and DE metabolic rate ( P<0.05 or P<0.01) .We establish regression equations of energy and protein requirement of one-year-old Shanbei white cashmere wether goats, the proper range of DE and ME levels in diet are 8.80 to 10.61 MJ/kg and 7.34 to 8.76 MJ/kg, respectively, and the appropriate CP and digestible CP levels are 10.00%and 7.34%, respec-tively.关键词
陕北白绒山羊/周岁羯羊/能量/蛋白质/需要量Key words
Shanbei white cashmere goat/one-year-old wether goats/energy/protein/requirement分类
农业科技引用本文复制引用
高晔,李碧波,黄帅,王荣斌,王冬,李琴芳,屈雷..陕北白绒山羊羯羊能量和蛋白质需要量[J].动物营养学报,2016,28(3):720-730,11.基金项目
陕西省科技统筹创新工程计划项目（2014KTDZ02-01）；陕西省科学技术厅2014年度农业攻关项目（2014K01-17-03）；陕西省教育厅2009年度科学研究计划项目 （）
