生长鹅氮维持需要量的比较研究  

The Comparative Study on Nitrogen Requirement for Maintenance in Growing Geese

作　　者：施寿荣[1] 王志跃[1] 张艳云[1] 杨海明[1] 张军[1] 

机构地区：[1]扬州大学动物科学与技术学院,扬州225009

出　　处：《动物营养学报》2007年第3期295-298,共4页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：江苏省十五科技攻关项目(BE2001369)

摘　　要：本试验通过采用回归法(REG)、无氮日粮法(NFD)和绝食代谢法(FAS)比较研究生长期扬州鹅的氮维持需要(Nm)。结果表明:(1)三种方法所得的Nm分别为242.3、191.2和243.7mg/kgBW0.75;(2)NFD研究得出,排泄物含氮量和总氮量与无氮日粮采食量分别呈极显著和显著的负相关(P=0.000,P<0.01和P=0.019,P<0.05)。REG和FAS这两种方法估测结果较为接近,其中REG法更为可靠,更可取,生长期扬州鹅的Nm为240.0mg/kgBW0.75左右。The nitrogen requirement for maintenance （Nm） was comparatively determined by regression method（REG）, N- free diet trial（NFD）and fasting experiment（FAS） in growing Yangzhou geese. The results showed 1） Nm of these three methods were 242.3 mg/kg BW^0.75 , 191.2 mg/kg BW^0.75 and 243.7 mg/kg BW^0.75 respectively; 2） in N-free diet trial, the ratio and quantity of nitrogen in excreta respectively showed significantly negative correlation with the intake of N-free diet （P = 0. 000,P〈0.01 and P = 0. 019,P〈0.05）. It was concluded that the estimated results of REG and FAS were similar,and REG was more steady and suitable. Nm of growing Yangzhou geese was about 240.0 mg/kg BW^0.75 .

关 键 词：氮维持需要 氮平衡试验 无氮日粮试验 扬州鹅 

分 类 号：S831.5[农业科学—畜牧学]