Effects of Low Energy Diet Supplemented with Emulsifier on Growth Performance,Serum Biochemical Indexes,Organ Development,Pancreatic Digestive Enzyme Activities and Cecal Microflora of Broilers
The aim of this study was to investigate the effects of low energy diet supplemented with emulsifier on growth performance,serum biochemical indexes,organ development,pancreatic digestive enzyme activities and cecal microflora of broilers.A total of 180 one-day-old Arbor Acres(AA)broilers with similar body weight were randomly divided into 3 groups with 6 replicates per group and 10 broilers per replicate.Broilers in the control group were fed a basal diet,broilers in the low energy group were fed a low energy diet(reduce 0.17 MJ/kg metabolic energy based on basal feed),and broilers in the emulsifier group were fed the low ener-gy diet supplemented with 350 mg/kg emulsifier(the main component was polyethylene glycol glycerol castor ester).The experiment lasted for 21 days.The results showed that:1)compared with the control group,the average body weight gain of broilers aged from 21 to 28 days of the low energy group was significantly de-creased(P＜0.05).2)Compared with the control group,the serum urea nitrogen(UN)content of the low energy group was significantly decreased(P＜0.05),and the serum globulin(GLB)content was significantly increased(P＜0.05);the serum total protein(TP)and GLB contents of the emulsifier group were significantly increased(P＜0.05).3)Compared with the control group,the abdominal adipose index of low energy group and emulsifier group was significantly increased(P＜0.05).4)Compared with the control group,the pancreat-ic trypsin activity of the emulsifier group was significantly increased(P＜0.05).5)Compared with the low en-ergy group,the liver triglyceride(TG)content of the emulsifier group was significantly decreased(P＜0.05).6)Compared with the low energy group,the cecal microbiota Shannon index,Observed_features index,Faith_pd index,and Chao1 index of the emulsifier group were significantly increased(P＜0.05),and the cecal Chloroflexi relative abundance was significantly increased(P＜0.05).In conclusion,the low energy diet sup-plemented with emulsifier has a certain positive impact on the growth performance of broilers,can increase the pancreatic trypsin activity,alleviate liver fat deposition,improve the diversity of cecal microflora and the rela-tive abundance of Chloroflexi.[Chinese Journal of Animal Nutrition,2024,36(4):2318-2330]
emulsifierlow energy dietintestinal developmentmicroflora
万方数据
维普
