Effects of Dietary Fiber Supplementation in Diet on Growth Performance and Intestinal Health of Broiler Chickens:A Meta-Analysis
The aim of this study was to explore the effects of dietary fiber supplementation in diet on growth performance and intestinal health of broiler chickens by a Meta-analysis.By searching the Web of Science,PubMed,CNKI and Wanfang databases for experimental studies on the effects of dietary fiber on the growth performance and intestinal morphology of broilers from years 2007 to 2022,a total of 27 articles were select-ed,totaling 5 310 broilers.The Review Manager 5.3 software was used to analyze indicators such as average daily gain(ADG),final body weight(FBW),average daily feed intake(ADFI)and ileal villus height(VH),crypt depth(CD),villus height/crypt depth(VH/CD)and gizzard relative weight(GRW)of broil-er chickens.The results showed that compared with the control group,dietary fiber supplementation in diet sig-nificantly increased the ADG[merge effect(MD)=1.01,95％confidence interval(95％CI):0.29 to 1.72,P=0.006 00],FBW(MD=45.05,95％CI:16.68 to 73.42,P=0.002 00),ileal VH(MD=36.58,95％CI:14.22 to 58.94,P=0.001 00)and GRW(MD=0.16,95％CI:0.11 to 0.21,P＜0.000 01)of broiler chickens,significantly decreased the F/G(MD=-0.04,95％CI:-0.06 to-0.01),P=0.008 00)of broiler chickens,and dietary fiber supplementation in diet had no significant effects on ADFI(MD=0.29,95％CI:-0.59 to 1.17,P=0.520 00),ileal CD(MD=5.51,95％CI-1.83 to 12.86,P=0.140 00)and VH/CD(MD=0.06,95％CI:-0.01 to 0.14,P=0.090 00)of broiler chickens.The subgroup analysis showed that the insoluble dietary fiber(IDF)supplementation in diet significantly increased the ADG(MD=1.34,95％CI:0.56 to 2.12,P=0.000 70),ileal VH(MD=50.37,95％CI 24.22 to 76.51,P=0.000 20)and VH/CD(MD=0.25,95％CI:0.17 to 0.32,P＜0.000 01),and significantly decreased the F/G(MD=-0.04,95％CI:-0.06 to-0.02,P=0.000 60)of broiler chickens;the soluble dietary fiber(SDF)supplementation in diet had no significant effects on ADFI(MD=0.71,95％CI:-0.68 to 2.10,P=0.320 00),ADG(MD=0.69,95％CI:-0.65 to 2.03,P=0.310 00),F/G(MD=-0.04,95％CI:-0.09 to 0.01,P=0.090 00),ileal VH(MD=17.00,95％CI:-5.51 to 39.50,P=0.140 00),CD(MD=3.01,95％CI:-3.10to9.13,P=0.330 00)and VH/CD(MD=-0.27,95％CI:-0.79 to 0.29,P=0.360 00)of broiler chickens.In con-clusion,when the crude fiber content in broiler chickens'diet from 1.43％to 6.17％,the dietary fiber supple-mentation in diet can improve the growth performance and intestinal health of broiler chickens.Compared with SDF,IDF has a greater effect on improving the growth performance and intestinal health of broiler chickens.[Chinese Journal of Animal Nutrition,2024,36(3):1927-1941]
万方数据
维普
