The aim of this paper was to study the effects of compound feed additives on growth performance and intestinal morphology of broilers.12001-day-old white feathered broilers were randomly divided into 4 groups with 10 replicates per group and 30 broilers per replicate.Experimental group 1 was antibacterial peptide + potassium dicarboxylate + complex acid;Experimental group 2 was antibacterial peptide + potassium dicarboxylate + plant essential oil;Experimental group 3 was potassium dicarboxylate + complex acid + plant essential oil;Experimental group 4 was antimicrobial peptide + complex acid + plant essential oil.The experiment lasted for 32 days,including 4 days of pre-feeding period and 28 days of experimental period.The results showed as follows:Compared with experimental group 1,the final body weight and average daily gain of broilers in experimental group 4 were significantly increased by 3.17%(P＜0.05),and the average daily gain was significantly increased by 3.25%(P＜0.05).The ratio of feed to gain was significantly decreased by 3.43%(P＜0.05).The apparent digestibility of crude protein and calcium of 4 broilers in experimental group was significantly increased(P＜0.05).The villus height and V/C value of duodenum of experimental group 4 broilers were significantly increased(P＜0.05);In conclusion,antimicrobial peptides + complex acids + plant essential oils can promote the growth and development of broilers by improving intestinal
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