Effect of active yeast on growth performance,serum antioxidant capacity and immune indexes of weaned piglets
The study was conducted to investigate the effect of active yeast on the growth performance,serum antioxidant capacity and immunity of weaned piglets.A total of 200 weaned 32-day-old piglets were randomly divided into four groups,with five replicates in each group and 10 piglets in each replicate.Piglets in the control group were fed with a basal diet,and the piglets in Group 1,Group 2 and Group 3 were fed with a basal diet supplemented with 0.25,0.50 and 1.00 g/kg coated active Saccharomyces boulardii,respectively.The pre-test period was 1 w,and the formal test period was 28 d.The results showed that the final weight of piglets in the Group 2 and Group 3 was increased by 6.21%and 8.13%compared with the control group(P<0.05),and the average daily gain was increased by 11.11%and 13.68%compared with the control group(P<0.05).Compared with the control group,the feed to gain ratio of all coated yeast groups was significantly decreased by 4.89%,7.61%and 9.24%(P<0.05),and the diarrhea rate was decreased by 53.67%,69.50%and 73.61%(P<0.01).The serum T-SOD activity of piglets in the Group 2 and Group 3 was significantly higher than that in the control group(P<0.05),and the T-AOC was significantly higher than that in the control group(P<0.05).The serum IL-10 content of piglets in the active yeast group was significantly higher than that in the control group(P<0.05).The serum TNF-α content of the Group 2 and Group 3 was significantly lower than that of the control group and Group 1(P<0.05).The number of Lactobacillus in cecum of the Group 2 and Group 3 was significantly higher than that of the control group(P<0.05),the number of Escherichia coli in cecum of all coated active yeast groups was significantly lower than that of the control group(P<0.05),and the number of yeast was significantly higher than that of the control group(P<0.05).The number of Escherichia coli in the jejuni of all coated active yeast groups was significantly lower than that in the control group(P<0.05),and the number of yeast was significantly higher than that in the control group(P<0.05).The experiment indicates that feeding appropriate amount of coated active yeast can improve the growth performance,antioxidant performance and immunity,improve intestinal flora structure of weaned piglets,and the suitable supplemental level of coated active yeast is 0.50 g/kg.
coated active yeastgrowth performanceimmunityantioxidationpiglet
国家科技期刊平台
NSTL
万方数据
维普
