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1. Comprehensive evaluation of the metabolic effects of insect meal from Tenebrio molitor L. in growing pigs by transcriptomics, metabolomics and lipidomics

Author

Sandra Meyer, Denise K. Gessner, Maria S. Braune, Theresa Friedhoff, Erika Most, Marcus Höring, Gerhard Liebisch, Holger Zorn, Klaus Eder, and Robert Ringseis

Subjects
Animal nutrition, Insect meal, Lipidome, Liver, Metabolism, Metabolome, Animal culture, SF1-1100, Veterinary medicine, SF600-1100
Abstract

Abstract Background The hypothesis was tested that insect meal (IM) as protein source influences intermediary metabolism of growing pigs. To test this, 30 male, 5-week-old crossbred pigs were randomly assigned to 3 groups of 10 pigs each with similar body weights (BW) and fed isonitrogenous diets either without (CON) or with 5% IM (IM5) or 10% IM (IM10) from Tenebrio molitor L. for 4 weeks and key metabolic tissues (liver, muscle, plasma) were analyzed using omics-techniques. Results Most performance parameters did not differ across the groups, whereas ileal digestibilities of most amino acids were 6.7 to 15.6%-units lower in IM10 than in CON (P < 0.05). Transcriptomics of liver and skeletal muscle revealed a total of 166 and 198, respectively, transcripts differentially expressed between IM10 and CON (P

Published
2020
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2. Tenebrio molitor Larvae Meal Affects the Cecal Microbiota of Growing Pigs

Author

Sandra Meyer, Denise K. Gessner, Garima Maheshwari, Julia Röhrig, Theresa Friedhoff, Erika Most, Holger Zorn, Robert Ringseis, and Klaus Eder

Subjects
bacteroidetes, chitin, fermentation, firmicutes, intestine, insect meal, Veterinary medicine, SF600-1100, Zoology, QL1-991
Abstract

The hypothesis tested was that dietary inclusion of insect meal (IM) causes an alteration in the cecal microbiota composition and its fermentation activity of growing pigs. Five-week-old male crossbred pigs were randomly assigned to three groups of 10 pigs each, and fed isonitrogenous diets either without (CON) or with 5% IM (IM5) or 10% IM (IM10) from Tenebrio molitor larvae for four weeks. The relative abundance of the phylum Bacteroidetes was lower in group IM10 than in group CON (p < 0.05), whereas the relative abundance of Firmicutes and the Firmicutes:Bacteroidetes-ratio tended to be higher in groups IM10 and IM5 than in group CON (p < 0.1). The relative abundance of the Proteobacteria tended to be higher in group IM10 than in groups CON and IM5 (p < 0.1). The concentrations of the total short-chain fatty acids in the cecal digesta did not differ between the three groups, but the concentrations of the branched-chain fatty acids in the cecal digesta were higher in group IM5 and IM10 than in group CON (p < 0.05). The present study shows for the first time that the replacement of soybean meal by Tenebrio molitor larvae meal causes a shift of the cecal microbial community and its fermentation activity in growing pigs.

Published
2020
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3. Tenebrio molitor Larvae Meal Affects the Cecal Microbiota of Growing Pigs

Author

Holger Zorn, Julia Röhrig, Sandra Meyer, Erika Most, Garima Maheshwari, Denise K. Gessner, Theresa Friedhoff, Klaus Eder, Robert Ringseis, and Publica

Subjects
Firmicutes, insect meal, Soybean meal, chitin, Article, Animal science, lcsh:Zoology, microbiota, firmicutes, lcsh:QL1-991, Relative species abundance, fermentation, intestine, Meal, Larva, lcsh:Veterinary medicine, General Veterinary, biology, bacteroidetes, pigs, Bacteroidetes, biology.organism_classification, lcsh:SF600-1100, Animal Science and Zoology, Fermentation, Proteobacteria
Abstract

The hypothesis tested was that dietary inclusion of insect meal (IM) causes an alteration in the cecal microbiota composition and its fermentation activity of growing pigs. Five-week-old male crossbred pigs were randomly assigned to three groups of 10 pigs each, and fed isonitrogenous diets either without (CON) or with 5% IM (IM5) or 10% IM (IM10) from Tenebrio molitor larvae for four weeks. The relative abundance of the phylum Bacteroidetes was lower in group IM10 than in group CON (p &lt, 0.05), whereas the relative abundance of Firmicutes and the Firmicutes:Bacteroidetes-ratio tended to be higher in groups IM10 and IM5 than in group CON (p &lt, 0.1). The relative abundance of the Proteobacteria tended to be higher in group IM10 than in groups CON and IM5 (p &lt, 0.1). The concentrations of the total short-chain fatty acids in the cecal digesta did not differ between the three groups, but the concentrations of the branched-chain fatty acids in the cecal digesta were higher in group IM5 and IM10 than in group CON (p &lt, 0.05). The present study shows for the first time that the replacement of soybean meal by Tenebrio molitor larvae meal causes a shift of the cecal microbial community and its fermentation activity in growing pigs.

Published
2020

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