【摘要】 平均体重 5 0 .9kg生长猪 ,采用全收粪法 ,6× 6拉丁方试验设计 ,测定不同种类的玉米蛋白粉日粮纤维和能量对生长猪氮代谢的影响。试验结果 :玉米蛋白粉 (CP :5 2 % )、玉米蛋白粉 (CP :47.4% )、玉米蛋白粉 (CP :32 % ) 3种日粮 ,氮的消化率分别为 87.9% ,88.9% ,89.7% ;总氮利用率分别为 5 2 .6 4% ,49.0 2 % ,37.86 % ;粪氮与日粮氮比值分别为 12 .0 % ,11.1% ,10 .5 %。玉米蛋白粉日粮的氮沉积量、氮消化率、总氮利用率与日粮的NDF ,ADF ,CF的消化率呈线性正相关。日粮的粪氮与日粮氮比值 ,同日粮的NDF ,ADF ,CF的消化率呈线性负相关 ,同日粮的NDF或CF含量呈线性正相关更多还原

【Abstract】 The experiment was carried out to evaluate the metabolic nitrogen of corn gluten meal diets from three varieties of corn gluten meals that were corn gluten meal(protein 52%) diets, corn gluten meal(protein 47.4%) diets and corn glutem meal(protein 32%) diets in the pigs of average body weight 50.9 kg appling with the method of whole collecting fecal and 6×6 Latin square design. The results showed that the corn gluten meal(protein 52%) diets, corn gluten meal(protein 47.4%) diets and corn gluten meal(protein 32%) diets digestible nitrogen ratio were respectively 87.9%, 88.9%, 89.7%; utilization ratio of whole diet nitrogen were respectively 52.64%, 49.02%, 37.86%; the ratio of fecal nitrogen excrete and whole diet nitrogen were respectively 12.05%, 11.1%,10.5%; the ratio of urine nitrogen excrete and whole diet nitrogen were respectively 35.3% ,39.9%, 51.7%. There are linear positive relation among nitrogen deposition, digestible nitrogen ratio, utilization ratio of whole diet nitrogen and the digestiblity ratio of NDF, ADF, CF of whole diet; There are linear negative relation from the ratio of fecal nitrogen excrete and whole diet nitrogen to the digestibilty ratio of NDF, ADF, CF of whole diet; There are linear positive relation from the ratio of fecal nitrogen excrete and whole diet nitrogen to the contents of NDF, ADF, CF of whole diet.更多还原