动物营养学报Issue(1)：76-84,9.DOI:10.3969/j.issn.1006-267x.2015.01.011
饲粮粗蛋白质和代谢能水平对9~10周龄四川白鹅生产性能和氮平衡的影响
Effects of Dietary Crude Protein and Metabolizable Energy Levels on Performance and Nitrogen Balance of Sichuan White Geese Aged from 9 to 10 Weeks
摘要
Abstract
This experiment was conducted to study the effects of crude protein ( CP) and metabolizable energy ( ME) levels on performance and nitrogen balance of Sichuan white geese aged from 9 to 10 weeks. Four hun-dred and thirty two 57-day-old healthy Sichuan white geese 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 12 geese in each replicate. The geese were fed 9 experimental diets with three levels of ME (12.86, 12.13 and 11.43 MJ/kg) and three levels of CP ( 15%, 13% or 11%) . The feeding experiment lasted for 14 days. Eight geese per group were picked up on the basis of individual weight immediate to the average weight of every group on day 8 of the experiment, and the geese were used in a metabolism trial. The results showed as follows:1) CP level had significant effects on daily dry matter ( DM) intake and feed to gain ratio ( P<0.05) , the daily DM intake and feed to gain ratio were decreased with CP level increased; ME level had significant effect on daily DM intake ( P<0.01) , the daily DM intake was decreased with ME level increased; the interaction between CP and ME levels had significant effect on the consumed CP and ME for gain per gram (P<0.05 or P<0.01), with CP level increased, the consumed CP for gain per gram was increased, the consumed ME for gain per gram was decreased. 2) CP level had significant effects on nitrogen intake, nitrogen excretion from excrement, deposited nitrogen, GE excretion from excrement and availability of GE ( P<0.05 or P<0.01) , the nitrogen intake, ni-trogen excretion from excrement, deposited nitrogen, GE excretion from excrement were increased with CP level increased. The interaction between dietary CP and ME levels had significant effects on deposited nitrogen and availability of nitrogen (P<0.05). The results suggest that for Sichuan white geese aged from 9 to 10 weeks, the suitable dietary levels of CP and ME are 13% and 11.43 MJ/kg, respectively.关键词
四川白鹅/粗蛋白质/代谢能/氮平衡/生产性能Key words
Sichuan white geese/crude protein/metabolizable energy/nitrogen balance/performance分类
农业科技引用本文复制引用
李琴,陈明君,彭祥伟..饲粮粗蛋白质和代谢能水平对9~10周龄四川白鹅生产性能和氮平衡的影响[J].动物营养学报,2015,(1):76-84,9.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）
农业科技成果转化资金项目(2013GB2F100398) （2013GB2F100398）
