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Ogasawara, K.* ; Yamada, N.* ; Nakayama, S.M.* ; Watanabe, Y.* ; Saito, K.* ; Chiba, A. ; Uchida, Y.* ; Ueda, K.* ; Takenaka, Y.* ; Kazama, K.* ; Kazama, M.* ; Yamagishi, J.* ; Mizukawa, H.* ; Ikenaka, Y.* ; Ishizuka, M.*

Surveys of eleven species of wild and zoo birds and feeding experiments in white-tailed eagles reveal differences in the composition of the avian gut microbiome based on dietary habits between and within species.

J. Vet. Med. Sci. 85, 1355-1365 (2023)

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The composition of the gut microbiome varies due to dietary habits. We investigated influences of diet on the composition of the gut microbiome using the feces of 11 avian species, which consumed grain-, fish- and meat-based diets. We analyzed gut microbiome diversity and composition by next-generation sequencing (NGS) of 16S ribosomal RNA. The grain-diet group had higher gut microbiome diversity than the meat- and fish-diet group. The ratio of Bacteroidetes and Firmicutes phyla was higher in the grain-diet group than in the meat- and fish-diet groups. The grain-diet group had a higher ratio of Veillonellaceae than the meat-diet group and a higher ratio of Eubacteriaceae than the fish-diet habit group. To clarify the influence of diet within the same species, white-tailed eagles (Haliaeetus albicilla, n=6) were divided into two groups, and given only deer meat or fish for approximately one month. The composition of the gut microbiome of individuals in both groups were analyzed by NGS. There were indications of fluctuation in the levels of some bacteria (Lactobacillus, Coriobacteriales, etc.) in each diet group. Moreover, one individual for each group which switched each diet in last week changed to each feature of composition of bacterial flora. The above results show that the composition of the gut microbiome differ depending on diet, even within the same species.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Avian ; Dietary Habitat ; Microbiome ; Next-generation Sequencing ; White-tailed Eagle; Ceca

ISSN (print) / ISBN 0916-7250

e-ISSN 1347-7439

Journal Journal of Veterinary Medical Science

Quellenangaben Volume: 85, Issue: 12, Pages: 1355-1365

Publisher Japanese Society of Veterinary Science

Publishing Place Univ Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 103, Japan

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Research Unit Comparative Microbiome Analysis (COMI)

Grants Ministry of Education, Culture, Sports, Science and Technology of Japan
JSPS Core to Core Program
JST AJ-CORE
Hokkaido University Sosei Tokutei Research
Japan Prize Foundation