Effects Of Wet Fermented Complete Feed On Performance And Intestinal Development In Weaned Piglets

This experiment was conducted to study the effects of diets added with different levels of wet fermented complete feed on performance, CP digestibility, serum index, intestinal morphology and disacchridase activities, as well as micro-flora on weanling piglets. A total of 160 weaning piglets with good health and weight at(8.20±0.16) kg were allocated to 5 dietary treatments(4 pens per treatment and 8 pigs per pen) : 1) basal diet plus 20 mg colist and 12 mg enramycin(antibiotics); 2) basal diet plus 0.1% bacillus subtilis and licheniformis compounds(probiotics), 3) fermented feed alternate 10% basal diet without antibiotic(10% fermented feed); 4) fermented feed alternate 20% basal diet without antibiotic(20% fermented feed); 5) fermented feed alternate 30% basal diet without antibiotic(30% fermented feed). This assay contains two parts, the results as follow: Experiment 1:(1) compare with antibiotics and probiotics groups, 20%、30% fermented feed groups significantly(P<0.05)improved ADG; compare with antibiotics, fermented feed groups reduced(P<0.05)diarrhea rate, had a tendency to reduce F/G but had no difference(P>0.05); all treatment groups had no difference on ADFI of piglets.(2) added appropriate fermented feed to diets had some improve(P>0.05) on CP digestibility.(3) compare with antibiotics group, 10%、30% fermented feed groups increased(P<0.05)globulin in serum; 30% fermented feed group improve(P<0.05)Ig M content, fermented feed groups had few influence(P>0.05) on other serum index, while they could improve total protein and immune globulin contents in serum to some extent. Compare with probiotics group, 20% fermented feed group increased(P<0.05)blood glucose; the fermented feed groups decrease(P<0.05)urea nitrogen level, while had no influence(P>0.05) on AST and ALT activity, TG and TC content. Experiment 2:(1) compare with antibiotics and probiotics groups, 20%、30% fermented feed groups improved(P<0.05)Lactic acid bacteria microbial numbers in faecal of piglets, the fermented feed groups all decrease(P<0.05)E.coli microbial number, had a tendency to improve(P>0.05) yeast numbers.(2) compare with antibiotics group, fermented feed groups increased(P<0.05) VH and VH/CD of jejunum, reduced(P<0.05)CD of duodenum; 10% and 20% fermented feed groups increased(P<0.05) VH and VH/CD of duodenum; 20% and 30% fermented feed group increased(P<0.05)VH and VH/CD of ileum, reduced(P<0.05)CD of ileum; 20% fermented feed group increased(P<0.05)IELs number of duodenum mucosa.(3) compare with antibiotics group, fermented feed groups improved sucrase activity in jejunum; 20% and 30% fermented feed group improved(P<0.05)maltase activity in duodenum, 30% fermented feed group improved(P<0.05)lactase activity in jejunum.(4) probiotics group and 10% fermented feed group had a greater influence on rectum flora than other groups, while 20% and 30% fermented feed groups had a greater impact on colon; the most treatment groups had a bigger diversity index in colon than rectum except 20% fermented feed group, moreover antibiotics group lower than fermented feed groups; the flora evenness and richness of antibiotics and probiotics groups in colon were higher than rectum, the antibiotics group was lower than fermented feed groups. The results show that supplemented with appropriate wet fermented complete feed to diets could improve performance, maintain intestinal mucosa morphological structure integrity and microbe balance, strengthen premonition and anti-stress capability.