Effects of Fermented Fructus Aurantii Immaturus Residue on Growth Performance,Antioxidant Capacity and Intestinal Health of Piglets
This experiment was conducted to investigate the effects of fermented fructus aurantii immaturus res-idue on growth performance,antioxidant capacity and intestinal health of piglets.Thirty-two DurocxLandracex Large White hybrid piglets with the body weight of(7.65±0.18)kg were randomly divided into 4 groups with 8 replicates per group and 1 piglet per replicate.Piglets in 4 group were fed experimental diets which the fer-mented fructus aurantii immaturus residue supplemental levels were 0(control group),4％(4％ FF group),8％(8％ FF group)and 12％(12％ FF group),respectively.The experiment lasted for 30 days.The results showed as follows:1)compared with the control group,the average daily gain and average daily feed intake of 8％ FF group were significantly increased(P＜0.05).2)Compared with the control group,the serum total protein(TP),immunoglobulin A(IgA),immunoglobulin G(IgG),immunoglobulin M(IgM)contents and superoxide dismutase(SOD),catalase(CAT),glutathione peroxidase(GSH-Px)activities of 8％FF group were significantly increased(P＜0.05),the serum total antioxidant capacity(T-AOC)of 4％FF,8％FF and 12％ FF groups was significantly increased(P＜0.05),and the serum malondialdehyde(MDA)content of 4％ FF and 8％ FF groups was significantly decreased(P＜0.05).3)Compared with the control group,the jeju-nal villus height,goblet cell number and villus height/crypt depth of 8％ FF group were significantly increased(P＜0.05),and the jejunal crypt depth was significantly decreased(P＜0.05).4)Compared with the control group,the mRNA relative expression levels of zonula occluden-1(ZO-1),superoxide dismutase 1(SOD1)and nuclear factor E2 related factor 2(Nrf2)in jejunum of 8％ FF and 12％ FF groups were significantly in-creased(P＜0.05),and the jejunal Occludin mRNA relative expression level of 8％ FF group was significantly increased(P＜0.05).5)Compared with the control group,the colonic Bacteroidetes relative abundance of 8％FF and 12％ FF groups was significantly increased(P＜0.05),and the colonic Firmicutes relative abundance was significantly decreased(P＜0.05);the colonic Lactobacillus relative abundance of 4％ FF and 8％ FF groups was significantly increased(P＜0.05),the colonic Prevotella relative abundance of 12％ FF group was significantly increased(P＜0.05),and the colonic Streptococcus relative abundance of 4％ FF,8％ FF and 12％FF groups was significantly decreased(P＜0.05).In conclusion,dietary fermented fructus aurantii immaturus residue has no negative effect on the growth performance of piglets,and can improve the body antioxidant ca-pacity and intestinal morphology,increase the intestinal microbial diversity,and ultimately improve the growth performance of piglets.Under the conditions of this experiment,the dietary suitable fermented fructus aurantii immaturus residue level is 8％.[Chinese Journal of Animal Nutrition,2024,36(1):186-198]
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