玉米蛋白粉日粮纤维和能量对猪氮代谢的影响

Evaluation of the Metabolic Nitrogen on the Fiber and Energy of Corn Gluten Meal Diets in Growing Pigs

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 。

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.