Effects of modified Liujunzi decoction on growth performance and intestinal environment of broilers
The experiment aimed to study the effects of fermented additive of modified Liujunzi decoction on the growth performance,intestinal enzyme activity,microbial population,and intestinal pH value of broilers.Four hundred healthy one-day-old white feather broilers with similar body weights were randomly divided into four groups,with five replicates per group and 20 broilers per replicate.Group A,group B,and group C were fed a basal diet supplemented with 0.6％fermented Chinese herbal medicine,1.2％fermented Chinese herbal medicine,and 1.2％non-fermented Chinese herbal medicine,respectively.Group D(control group)was fed a basal diet.The preliminary trial lasted for seven days,followed by a 28-day experimental period.The results showed that compared with the control group,the average daily weight gain of broilers in the group A and group B increased,as well as the activities of intestinal amylase and protease(P＜0.05).The population of Lactobacillus in the ileum increased(P＜0.05),while the populations of Escherichia coli in the ileum and cecum of 36-day-old broilers decreased(P＜0.05).Compared with the control group,the pH values of the duodenum,jejunum,and cecum in the group B at 20 days of age decreased(P＜0.05),and the pH values of the duodenum,jejunum,and cecum in the group A and group B at 36 days of age decreased(P＜0.05).The study indicates that adding a certain amount of fermented additive of modified Liujunzi decoction to broiler diets can improve the intestinal environment,promote digestion and body development,and the recommended dosage is 0.6％.
modified Liujunzi decoctionfermented Chinese medicinebroilersgrowth performanceintestinal enzyme activityflora number
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