丁酸梭菌对断奶仔猪生长性能、 血清免疫功能、抗氧化能力和肠道形态的影响.

The experiment was to study the effect of adding Clostridium butyricum in diet on growth performance, serum immune function, antioxidant capacity and intestinal morphology of weaned piglets. A total of 240 healthy weaned piglets at the age of (21±1) d were randomly divided into four groups, with three replicates in each group and 20 piglets in each replicate. Piglets in group A (control group) were fed with basal diet, and piglets in group B, group C and group D were fed with basal diet supplemented with 15, 30 and 60 g/t Clostridium butyricum, respectively. The test period was 35 d. The results showed that the average daily weight gain of piglets in group C and group D was increased significantly on the 15th to 35th day of experiment (P<0.05). The average daily feed intake and average daily gain of piglets in group C was significantly increased (P<0.05), and the feed to gain ratio was significantly decreased (P<0.05). Compared with control group, the serum IgG content of piglets in each test group were significantly increased on the 15th and 35th day of weaning (P<0.05), and the serum IgA contents of piglets in group C and group D were significantly increased on the 35th day of weaning (P<0.05). Compared with control group, the serum T-AOC of piglets in group C and group D was significantly increased on the 15th day of weaning (P<0.05), and the serum T-AOC of piglets in group C was significantly increased on the 35th day of weaning (P<0.05). The activity of SOD and CAT in serum of piglets in group C and group D were significantly increased on the 15th and 35th day of weaning (P<0.05), the serum MDA content of piglets in each test group decreased significantly on the 35th day of weaning (P<0.05), Compared with control group, the caecum VH of piglets in each test group increased significantly on the 15th and 35th day of weaning (P<0.05), and the caecum VH/CD in group C increased significantly (P<0.05). The ileal VH and VH/CD of piglets in each experimental group were significantly increased (P<0.05), and the ileal CD was significantly decreased (P<0.05). The study indicates that adding 30~60 g/t of Clostridium butyricum to diet can increase the average daily feed intake and average daily weight gain of weaned piglets in the later period, improve the immune function and antioxidant capacity of piglets, and promote intestinal development. [ABSTRACT FROM AUTHOR]