不同断奶日龄仔猪血清代谢物水平的变化

EFFECT OF WEANING AGE ON SERUM METABOLITE LEVEL IN PIGLETS

本试验研究了不同断奶日龄仔猪血清代谢物水平的变化。试验设 17日龄断奶、2 1日龄断奶、2 8日龄断奶、35日龄断奶 4个处理组 ,每个处理 3个重复 ,每个重复 1窝 ,定时采血。结果表明 ,17、2 1日龄断奶组仔猪血糖浓度显著低于 35日龄断奶组 (P <0 0 5) ,在断奶后 2～ 3周时间内 ,以 17日龄断奶组仔猪血糖浓度波动最大 ;4个不同断奶日龄组之间仔猪血清尿素氮浓度没有显著差异 ;与 35日龄断奶组比 ,17日龄断奶仔猪血清总蛋白、清蛋白水平显著下降 ,而 2 1、2 8日龄断奶组仔猪血清总蛋白、清蛋白水平没有显著变化 ;17、2 1、2 8日龄断奶组仔猪血清球蛋白水平均显著低于 35日龄断奶仔猪 ;

litters weaned at 17(Ⅰ)、21(Ⅱ)、28(Ⅲ)and 35(Ⅳ) days old respectively were used to determine effect of weaning age on serum metabolite level in piglets.With 9 samples each time each treatment,blood was taken at 12 hour、3day、1week、2week Postweaning in group Ⅰ,12h、1week、2week、3week Postweaning in group Ⅱ and Ⅲ,and blood samples were taken at all the same time as group Ⅰ、Ⅱ、Ⅲ in group Ⅳ.Glucose,total protein,albumin,globulin,urea nitrogen in blood samples was measured.Serum glucose level in group Ⅰ and Ⅱ was significantly lower compared with group Ⅳ,and there was greater change in plasma glucose level during the first 2～3 weeks postweaning in group Ⅰ.Serum urea nitrogen level had no significant change within treatments.Compared with group Ⅳ,serum total protein,albumin decreased significantly in group Ⅰ,but there was no significant change between group Ⅱ and Ⅲ.Serum globulin level was significantly lower in gruop Ⅰ、Ⅱ and Ⅲ compared with group Ⅳ.There was no significant change in the ratio of serum albumin to globulin within 4 treatments.