Effects of Fermented Feed and Wet Mixed Feed on Growth Performance,Antioxidant Capacity and Intestinal Microflora of Weaned Piglets
This experiment was conducted to study the effects of fermented feed and wet mixed feed on the growth performance,antioxidant capacity and intestinal microflora of weaned piglets.One hundred and forty-four 21-day-old three-way crossbred(Duroc × Landrace × Yorkshire)weaned piglets with an average body weight of(5.21±0.11)kg,they were randomly divided into 3 groups[control group(CON group),fermen-ted feed group(FLF group)and wet mixed feed group(WF group)],with 6 replicates per group and 8 pigs per replicate.The experiment period was 28 days.The 1st stage(from days 1 to 14),the CON group was fed a basal diet Ⅰ,the FLF group was fed the mixture of basal diet Ⅰ+liquid fermented feed(the ratio of them was 3∶1)with the water content of 23％,and the WF group was fed the basal diet Ⅰ with a certain amount of water after stirring(the water content of the experimental diet in WF group was consistent with that in FLF group);the 2nd stage(from days 15 to 28),each group was fed a basal diet Ⅱ.The results showed as fol-lows:1)from days 1 to 14 of the experiment,the average daily gain(ADG)and average daily feed intake(ADFI)in FLF group were significantly lower than those in CON group(P＜0.05),and the ratio of feed to gain(F/G)in FLF group was significantly higher than that in CON group(P＜0.05).From days 15 to 28 of the experiment,the ADFI and ADG in FLF group were extremely significantly higher than those in CON group and WF group(P＜0.01),the F/G in FLF group was extremely significantly lower than that in CON group(P＜0.01),and the diarrhea rate in FLF group was extremely significantly lower than that in CON group(P＜0.01).From days 1 to 28 of the experiment,the ADG in FLF group was extremely significantly higher than that in CON group and WF group(P＜0.01),and the F/G was extremely significantly lower than that in CON group and WF group(P＜0.01);compared with the CON group,the ADG and ADFI in WF group were ex-tremely significantly decreased(P＜0.01),and the diarrhea rate in FLF group and WF group was significantly decreased(P＜0.05).2)On day 14,compared with the CON group and WF group,the serum total antioxi-dant capacity(T-AOC)in FLF group was significantly increased(P＜0.05);on day 28,compared with the CON group,the contents of serum malondialdehyde(MDA)and triglyceride(TG)were extremely signifi-cantly decreased(P＜0.01),and the serum total protein(TP)content and catalase(CAT)activity were sig-nificantly increased in FLF group(P＜0.05).The serum T-AOC and CAT activity in WF group were extreme-ly significantly higher than those in CON group(P＜0.01).3)The Simpson index in FLF group was extremely significantly higher than that in CON group(P＜0.01),and Ace,Shannon and Chao indexes in FLF group were extremely significantly lower than those in CON group and WF group(P＜0.01).The Simpson index in WF group was extremely significantly higher than that in CON group(P＜0.01),and the Ace and Chao inde-xes were extremely significantly lower than those in CON group(P＜0.01).4)At the phylum level,Firmi-cutes and Proteobacteria were the dominant phyla in FLF group.At the genus level,Clostridium_sensu_stricto_1 and Actinobacillus were the main dominant genera in FLF group.In conclusion,on days 1 to 14 of the experiment,compared with the CON group,feeding wet mixed feed and fermented feed can regulate the structure of intestinal microflora,improve the intestinal health,and reduce the diarrhea rate of weaned piglets;on days 15 to 28 of the experiment,compared with the CON group,the diarrhea rate of weaned piglets in the FLF group is significantly reduced,the growth performance and antioxidant capacity of weaned piglets are im-proved.[Chinese Journal of Animal Nutrition,2024,36(7):4258-4270]
万方数据
维普
