Effects of Purple Potato Peel Powder on Growth Performance,Waste Reduction Rate,Body Nutrient Components and Intestinal Microorganisms of Black Soldier Fly Larvae
This experiment was to investigate the effects of purple potato peel powder on growth performance,waste reduction rate,body nutrient components and intestinal microorganisms of black soldier fly larvae.Three thousand 4-day-old black soldier fly larvae were selected and randomly divided into 5 groups with 3 replicates per group and 200 larvae per replicate.The control group was fed the growing pig manure,and the experimen-tal groups were fed the growing pig manure+2％purple potato peel powder(2％supplemental group),grow-ing pig manure+4％purple potato peel powder(4％supplemental group),growing pig manure+6％purple potato peel powder(6％supplemental group)and growing pig manure+8％purple potato peel powder(8％supplemental group).The experiment lasted for 16 days.1)the average dry weight of larvae of 6％and 8％supplemental groups was significantly lower than that of control group and 2％and 4％supplemental groups(P＜0.05).There was no significant difference in the waste reduction rate among all groups(P＞0.05).2)The crude protein content of 4％,6％and 8％supplemental groups was significantly higher than that of control group(P＜0.05),and the ether extract content of 2％,4％,6％and 8％supplemental groups was significantly lower than that of control group(P＜0.05).3)The Proteobacteria relative abundance of 4％supplemental group was significantly lower than that of control group(P＜0.05),and the Actinobacteriota,Bacteroidota,Cyanobacteria,Verrucomicrobiota and Acidobacteriota relative abundances were significantly higher than those of control group(P＜0.05).4)The Providencia,Breznakia and Enterococcus relative abundances of 4％sup-plemental group were significantly lower than those of control group(P＜0.05),and the Clostridium_sensu_stricto_1,Terrisporobacter,Corynebacterium,Romboutsia and Turicibacter relative abundances were signifi-cantly higher than those of control group(P＜0.05).5)The Clostridium_sensu_stricto_1 and Terrisporobacter relative abundances were significantly and positively correlated with average dry weight of larvae and crude pro-tein content(P＜0.05),respectively,while the Enterococcus relative abundance was significantly and nega-tively correlated with crude protein content(P＜0.05).6)The microbial network of 4％supplemental group had 3 138 linkages and 178 nodes,which was higher than that of the other groups,indicating that the gut was the most complex with 4％supplemental proportion of purple potato peel powder.In conclusion,the growing pig manure supplemented with 4％purple potato peel powder can increase the body crude protein content and decrease the ether extract content without affecting the average dry weight of larvae and waste reduction rate,promotes the intestinal health of larvae,which is conducive to increase the insect protein production efficiency.[Chinese Journal of Animal Nutrition,2024,36(5):3329-3339]
万方数据
维普
