Effects of Adding Different Ratios of Tiger Nut or Puffed Tiger Nut to Diets on Growth Performance,Serum Biochemical Indexes and Fecal Microbial Composition of Growing Pigs
This study aimed to investigate the effects of adding different ratios of tiger nut or puffed tiger nut to diets on the growth performance,serum immune,antioxidant indexes,and fecal microbial composition of growing pigs weighing 30 to 60 kg.A total of 135 healthy(Duroc×Landrace×Large White)pigs with body weight of(33.40±0.15)kg were selected for the experiment,which were divided into five groups with three replicates per group and nine pigs per replicate.They were control group(CK group,without tiger nut),5％tiger nut group(5％CEL group),10％tiger nut group(10％CEL group),10％puffed tiger nut group(10％PCEL group),15％puffed tiger nut group(15％PCEL group).This experiment was conducted for 28 days.Results showed as follows:compared with the CK group,the average daily gain(ADG)in the 15％PCEL group was significantly increased(P＜0.05);the average daily feed intake(ADFI)in the 5％CEL group,10％CEL group,10％PCEL group,and 15％PCEL group was significantly decreased(P＜0.05);the feed-to-gain ratio(F/G)in the 10％PCEL group and 15％PCEL group was significantly reduced(P＜0.05);com-pared with the CK group,the apparent digestibility of crude fat was significantly higher in 5％CEL,10％CEL,10％PCEL and 15％PCEL groups(P＜0.05);compared with CK group,serum total antioxidant capacity(T-AOC),and catalase(CAT)activity were significantly increased in the 5％CEL group(P＜0.05),T-AOC,CAT and superoxide dismutase(SOD)activities were significantly higher in the 10％CEL group(P＜0.05),and T-AOC was significantly higher in the 10％PCEL and 15％PCEL groups(P＜0.05).In the serum,the contents of interleukin-4(IL-4),interleukin-10(IL-10),immunoglobulin G(IgG),and immunoglobulin M(IgM)in the 5％CEL group were significantly increased(P＜0.05),and the contents of IL-4,IgG,and IgM in the 10％CEL group were also significantly increased(P＜0.05);the IL-10 content in the 15％PCEL group was significantly increased(P＜0.05).In terms of fecal microbiota,compared with the CK group,the relative abundances of Mitsuokella,Weissella,Holdemanella and Megasphaera at the family and genus levels were sig-nificantly increased in the 5％CEL group(P＜0.05);and in the 15％PCEL group,the relative abundances of Mitsuokella,Weissella,Lachnospiraceae_ND3007_group,Megasphaera,Holdemanella,Blautia,and Faeca-libacterium were significantly increased(P＜0.05),however,the relative abundances of Erysipelotrichaceae,Oscillospiraceae,Clostridium_sensu_stricto_1,Anaerorhabdus_furcosa_group,and Terrisporobacter were sig-nificantly decreased(P＜0.05).In conclusion,the addition of 5％tiger nut to the diet can significantly increase the antioxidant capacity and immune capacity of growing pigs.The addition of 15％puffed tiger nut can signifi-cantly increase the ADG,reduce the F/G,and significantly increase the total antioxidant capacity of pigs.The addition of 5％tiger nut and 15％puffed tiger nut can significantly regulate the gut microbiota,thereby impro-ving the intestinal health,and the addition of 15％puffed tiger nut can more effective in improving the gut health of pigs.[Chinese Journal of Animal Nutrition,2024,36(3):1562-1577]
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维普
