Effects of dietary lactobacillus supplementation on growth performance,intestinal antioxidant capacity and digestive enzyme activities of finishing pigs
The purpose of the experimental study was to analyze the effects of lactic acid bacteria on the growth of fattening pigs.160 fattening pigs with similar body weight were selected and randomly divided into 4 treatments with 4 replicates per treatment and 10 fattening pigs per replicate.They were fed according to basic diet(control group),basic diet+1.0 g/kg lactic acid bacteria(trial group I),basic diet+1.5 g/kg lactic acid bacteria(trial group Ⅱ)and basic diet+2.0 g/kg lactic acid bacteria(trial group Ⅲ),respectively.The experiment period was 42d.The results showed as follows:(1)Growth performance:the final weight and average daily gain of test group Ⅱ were higher than those of test groups I and Ⅲ(P＜0.05),and the ratio of feed to gain of test group Ⅱ was lower than that of test groups I and Ⅲ(P＜0.01),and the difference was extremely significant compared with control group(P＜0.01).(2)Intestinal antioxidant capacity:The glutathione peroxidase activity(GSH-Px),total antioxidant capacity(T-AOC)and total superoxide dismutase capacity(T-SOD)in test group Ⅱ＞test group I,test group Ⅲ＞control group(P＜0.05),and there was no difference between test group I and test group Ⅲ(P＞0.05).The malondialdehyde(MDA)in test group Ⅱ was significantly lower than that in test groups I and Ⅲ(P＜0.05),and significantly lower than that in control group(P＜0.01).(3)Digestive enzyme activities:The activities of lactase,sucrase,maltase,protease and lipase in test groups Ⅱand Ⅲ were higher than those in test group I(P＜0.05),and significantly higher than those in control group(P＜0.01).The results showed that adding lactic acid bacteria to the basal diet of fattening pigs could improve their growth performance,improve intestinal antioxidant capacity and enhance intestinal digestive enzyme activity.Under the experimental conditions,1.5 g/kg supplementation was the best.
NETL
NSTL
万方数据
