动物营养学报2013，Vol.25Issue(8)：1740-1751,12.DOI:10.3969/j.issn.1006-267x.2013.08.011
9～10周龄中畜小型白羽肉鸭公鸭粗蛋白质和代谢能需要量的研究
Requirements of Crude Protein and Metabolizable Energy of Male China Micro-Duck Aged from 9 to 10 Weeks
摘要
Abstract
This experiment was conducted to study the requirements of crude protein (CP) and metabolizable energy (ME) of China micro-duck (CMD) male ducks aged from 9 to 10 weeks.Five hundred and forty healthy 54-day-old male CMD ducks with similar body weight were used in a 3 × 3 double factorial design trial and randomly allocated into 9 groups with 4 replicates in each group and 15 ducks in each replicate.The ducks were fed 9 experimental diets with three levels of CP (18％,16％ or 14％) and ME (12.92,12.19 or 11.49 MJ/kg).The feeding experiment lasted for 17 days,the duration of the preliminary experiment was from 1 to 3 days and the duration of the formal experiment was from 4 to 17 days.Ten ducks per group were chosen on the basis of individual weight close to the average weight of every group on 11 day of the experiment,and the ducks were used in a metabolism trial.At 07:00 on 4 days of the experiment before feeding,nine ducks per group were chosen on the basis of weight close to the average weight of every group,and those ducks were slaughtered in a comparative slaughter experiment.The results showed as follows:dietary CP level had significant effects on the daily gain and the ratio of feed to gain (P ＜0.05 or P ＜0.01),and the dietary ME level had significant effect on the daily dry matter intake (P ＜ 0.01) ; the interaction between dietary CP and ME levels had a significant effects on the growth performance (P ＜0.01) ; the interaction between dietary CP and ME levels was significant in the availability of nitrogen and gross energy (P ＜ 0.05) ; the dietary levels of CP and ME and their interaction had significant effects on the deposition rates of CP and ME (P ＜ 0.05 or P ＜0.01).The results suggest that for the male CMD ducks aged from 9 to 10 weeks,the daily maintenance requirements of CP and ME are 13.279 g/kg W0.75 and 1 000.969 kJ/kg W0.75,respectively; the calculation formulas of daily requirements of CP and ME are CP =13.279W0.75 + 0.019 △W and ME =1 000.969W0.75 + 1.083△ W (W0.75 means metabolic body weight and △ W means daily gain),respectively;the dietary levels of CP and ME are 16.16％ and 12.15 MJ/kg,respectively.关键词
9～10周龄/CMD公鸭/粗蛋白质/代谢能/需要量Key words
9 to 10 weeks of age/ male CMD duck/ crude protein/ metabolizable energy/ requirement分类
农业科技引用本文复制引用
汪水平,彭祥伟,解华东..9～10周龄中畜小型白羽肉鸭公鸭粗蛋白质和代谢能需要量的研究[J].动物营养学报,2013,25(8):1740-1751,12.基金项目
国家现代农业(水禽)产业技术体系建设专项资金项目(CARS-43-15) （水禽）
