Effects of Potassium Diformate on Growth Performance,Slaughter Performance,Nutrient Apparent Metabolism Rate and Intestinal Environment of Broiler Chickens
The aim of this experiment was to investigate the effects of potassium diformate(KDF)on growth performance,slaughter performance,nutrient apparent metabolism rate and intestinal environment of broiler chickens.A total of 180 one-day-old AA broiler chickens were selected and randomly divided into three groups,with six replicates per group and 10 chickens per replicate.The control group was fed a basic diet,while the experimental groups was supplemented with 1(KDF-1 group)and 2 g/kg(KDF-2 group)KDF in the basic diet,respectively.The experimental period was 42 days.The results showed as follows:1)the aver-age daily feed intake(ADFI)and feed to gain(F/G)in the KDF-1 and KDF-2 groups at 1 to 21 days of age were significantly lower than those in the control group(P<0.05);the average daily gain(ADG)of broiler chickens in each group significantly increased(P<0.05),and F/G significantly decreased(P<0.05)at 22 to 42 days of age;the ADFI and F/G of broiler chickens at 1 to 42 days of age in the KDF-1 and KDF-2 groups significantly reduced(P<0.05).2)Compared with the control group,the leg muscle rate of broiler chickens in the KDF-1 and KDF-2 groups significantly increased(P<0.05).The semi-eviscerated weight rate and evis-cerated carcass weight rate in the KDF-2 group were significantly higher than those in the control group and KDF-1 group(P<0.05).3)The nutrient apparent metabolic rates of dry matter,total energy,and crude pro-tein in the KDF-2 group were significantly higher than those in the control group and KDF-1 group(P<0.05).4)Compared with the control group,the villus height and villus to crypt ratio of the jejunum in the KDF-1 and KDF-2 groups significantly increased(P<0.05),with the KDF-2 group being higher than the KDF-1 group(P<0.05).The villus height and villus to crypt ratio of the ileum in the KDF-1 and KDF-2 groups were signif-icantly higher than those in the CON group(P<0.05).5)The activities of lipase,amylase,and trypsin in the duodenum in the KDF-1 and KDF-2 groups were significantly higher than those in the control group(P<0.05).Among them,the activities of amylase and trypsin in the KDF-2 group were significantly higher than those in the KDF-1 group(P<0.05).The activities of lipase,amylase,and trypsin in the KDF-2 group were significantly higher than those in the control group and KDF-1 group(P<0.05),while the activities of lipase and trypsin in the KDF-1 group were significantly higher than those in the control group(P<0.05).The activi-ties of lipase,amylase,and trypsin in the ileum in the KDF-1 and KDF-2 groups were significantly higher than those in the control group(P<0.05),and the activities of lipase and trypsin in the KDF-2 group were signifi-cantly higher than those in the KDF-1 group(P<0.05).6)Compared with the control group,the number of total bacterial,Escherichia coli,lactobacillus,bifidobacteria and bacillus in the ileum in KDF-1 and KDF-2 groups were significantly reduced(P<0.05).In conclusion,the inclusion of 2 g/kg KDF in the diet of broiler chickens can improve growth performance,enhance intestinal morphology,and maintain intestinal health.[Chinese Journal of Animal Nutrition,2024,36(7):4293-4303]
potassium diformatebroiler chickensgrowth performanceintestinal digestive enzyme activitynumber of ileal microbiota