Effects of Co-Fermented Soybean Meal by Bacteria and Enzymes on Growth Performance,Slaughter Performance,Nutrient Apparent Metabolic Rates and Intestinal Morphology of Broilers
This experiment aimed to investigate effects of co-fermented soybean meal by bacterial and enzyme(FSM)on the growth performance,slaughter performance,nutrient apparent metabolic rates and intestinal morphology of broilers.A total of 160 healthy 1-day-old Arbor Acres male broilers with similar body weight[(47.00±0.45)g]were selected for the experiment.The broilers were randomly divided into 2 groups,each with 8 replicates and 10 broilers per replicate.Broilers in control group were fed a corn-soybean meal type basal diet,while those in the experimental group were fed experimental diet which included 7.5％FSM as a replace-ment for regular soybean meal in the basal diet.The experimental period was 42 d.The results showed as fol-lows:1)compared with the control group,FSM significantly increased the average daily gain(ADG)of broilers from 1 to 42 days of age and the ADG and average daily feed intake of broilers from 22 to 42 days of age(P＜0.05),and significantly decreased the feed to gain ratio of broilers from 22 to 42 days of age(P＜0.05).2)Compared with the control group,FSM had no significant effects on the slaughter performance of broilers at 42 days of age(P＞0.05).3)Compared with the control group,FSM significantly increased the ap-parent metabolic rates of dry matter,crude protein and energy of broilers(P＜0.05).4)Compared with the control group,FSM significantly increased the activity of hepatic glutathione peroxidase(GSH-Px)(P＜0.05),and significantly decreased the content of hepatic malondialdehyde(MDA)of broilers(P＜0.05).5)Compared with the control group,FSM significantly reduced the crypt depth in duodenum and ileum(P＜0.05),and significantly increased the villus height/crypt depth ratio in duodenum and ileum of broilers at 42 days of age(P＜0.05).Compared with the control group,the FSM significantly increased the contents of bu-tyric acid,isovaleric acid,valeric acid,hexanoic acid and isobutyric acid in the cecal contents of broilers at 21 days of age(P＜0.05),and significantly increased the contents of isovaleric acid,valeric acid and hexanoic acid in the cecal contents of broilers at 42 days of age(P＜0.05).In conclusion,using 7.5％FSM to replace part of regular soybean meal in the basal diet can improve the growth performance,nutrient apparent metabolic rates,liver antioxidant capacity and intestinal morphology,and increase the contents of volatile fatty acids in the cecal contents of broilers.[Chinese Journal of Animal Nutrition,2024,36(12):7742-7753]
co-fermentation with bacteria and enzymessoybean mealbroilersgrowth performanceslaugh-ter performancenutrient apparent metabolic ratesintestinal morphology
万方数据
维普
