黑水虻幼虫粉对育肥猪盲肠食糜主要微生物数量和代谢产物的影响

doi:10.11843/j.issn.0366-6964.2020.02.011

Abstract

Abstract: This study aimed to investigate the effects of Hermetia illucens larvae meal on the number of main microbes and metabolites in the cecal digesta of finishing pigs. Seventy-two 130 days of age healthy (Duroc×Landrace×Large White) crossbred pigs with similar body weight of (76.0±0.56) kg were randomly allocated to 3 different dietary treatments with 8 replicates for each treatment and 3 pigs for each replicate. Pigs in the control group were fed basal diets, pigs in the experimental groups were fed diets with 4% (4% group) and 8% (8% group) Hermetia illucens larvae meal to attain the same nitrogen and energy level, respectively by adjusting diet formula. After 42 days formal feeding, one pig from each replicate in each group was randomly selected and slaughtered, and the cecal digesta were collected for correlated parameters analysis. The results showed that:1) Compared with control group, dietary with 4% Hermetia illucens larvae meal significantly increased the number of Bifidobacterium, Lactobacillus, Prevotella, Clostridium cluster IV, and Roseburia in the cecal digesta of pigs (P<0.05), while significantly decreased the number of Escherichia coli (P<0.05); Meanwhile, dietary with 8% Hermetia illucens larvae meal significantly increased the number of Prevotella and Bifidobacterium in the cecal digesta of pigs (P<0.05). 2) Compared with control group, dietary with 4% and 8% Hermetia illucens larvae meal significantly increased the concentrations of lactate, total short-chain fatty acid, and acetate in the cecal digesta of pigs (P<0.05), and dietary with 8% Hermetia illucens larvae meal significantly decreased the concentration of valerate (P<0.05). For nitrogen metabolites, compared with control group, dietary with 4% Hermetia illucens larvae meal significantly decreased the concentrations of total amines, cadaverine, putrescine, spermine, p-cresol, and phenol in the cecal digesta of pigs (P<0.05), and dietary with 8% Hermetia illucens larvae meal also significantly decreased the cadaverine and phenol (P<0.05). In conclusion, under the conditions of this trail, dietary with 4% Hermetia illucens larvae meal increased the number of beneficial microbes and the concentrations of beneficial metabolites in the cecal digesta of finishing pigs, while decreased the number of potential pathogenic microbes and the concentrations of nitrogen metabolites. These findings indicated that appropriate proportion of Hermetia illucens larvae meal could be used as high quality protein feedstuff in pig production.

Key words: Hermetia illucens larvae meal, pig, cecum, intestinal microbe, metabolites

CLC Number:

S828.5

YU Miao, LI Zhenming, WANG Gang, RONG Ting, CHEN Weidong, WANG Fengying, MA Xianyong. Effects of Hermetia Illucens Larvae Meal on the Number of Main Microbes and Metabolites in the Cecal Digesta of Finishing Pigs[J]. Acta Veterinaria et Zootechnica Sinica, 2020, 51(2): 299-310.

References 36

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Effects of Hermetia Illucens Larvae Meal on the Number of Main Microbes and Metabolites in the Cecal Digesta of Finishing Pigs

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