摘要
试验采用早期断奶仔猪 72头 ,按 2× 3因素水平设计 ,即 2个蛋氨酸水平 (0 .2 9% ,0 .39% )和 3个苏氨酸水平 (0 .6 0 % ,0 .6 8%和 0 .76 % )分为 6种日粮处理。基础日粮为玉米 -小麦 -豆粕 -花生粕型日粮 ,试验期为 2 2d。试验第 2 1天 ,各重复选取 1头仔猪采前腔静脉血 ,分析血清尿素氮 (BUN)、总蛋白 (TP)、白蛋白 (ALB)的浓度及游离氨基酸质量浓度。结果表明 ,日粮中不同的苏氨酸水平影响血清BUN、TP的浓度 (P <0 .0 5 )及血清ALB的浓度 (P<0 .0 1)。血清BUN浓度与日粮苏氨酸水平呈显著负相关 ,随着日粮苏氨酸水平的提高 ,血清BUN浓度直线降低(P <0 .0 1)。随着日粮中苏氨酸水平和蛋氨酸水平的提高 ,血清中游离苏氨酸与蛋氨酸水平分别呈直线上升 (P<0 .0 1)。
early weaned piglets with 26±1 days age and 6.68±0.04 kilograms weight were divided into 6 treatments in a 2×3 factorial arrangement and fed on the dietary based on corn-wheat-soybean meal-peanut meal contained two methionine levels (0.29% and 0.39%) and three threonine levels (0.60%, 0.68% and 0.76%) for 22 days. On the twenty-first day in the testing period, one piglet from each replicate was selected and blood sample was collected through its anterior vein to analyze serum BUN, albumin (ALB),total protein (TP) and free amino acid concentration. The results showed that the different levels of threonine affected serum BUN,TP concentration ( P <0.05) and serum ALB concentration ( P <0.01). There was a significantly negative correction between serum BUN concentration and the threonine level in dietary. Therefore the serum BUN concentration would decrease linearly ( P <0.01) with the increasing threonine level in dietary, but the methionine and threonine concentration in serum would increase linearly ( P <0.01) with the increasing methionine and threonine level in dietary.
出处
《粮食与饲料工业》
CAS
2001年第9期34-35,共2页
Cereal & Feed Industry
