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Apart From the Diet, the Ruminal Microbiota of Lambs Is Modified in Relation to Their Genetic Potential for Feed Efficiency or Feeding Behavior.

TitleApart From the Diet, the Ruminal Microbiota of Lambs Is Modified in Relation to Their Genetic Potential for Feed Efficiency or Feeding Behavior.
Publication TypeJournal Article
Year of Publication2021
AuthorsMarie-Etancelin, C, Tortereau, F, Gabinaud, B, Boggio, GMartinez, Le Graverand, Q, Marcon, D, De Almeida, M-L, Pascal, G, Weisbecker, J-L, Meynadier, A
JournalFront Microbiol
Volume12
Pagination759432
Date Published2021
ISSN1664-302X
Abstract

Using two successive types of diets (100% concentrate and 67% forage), this study explores the relationship between the ruminal microbiota of 78 Romane lambs and their feed efficiency (residual feed intake trait) or feeding behavior (feeding rate trait). Analysis was carried out phenotypically by correlating feed efficiency or feeding behavior traits with the relative abundance of bacteria at the phylum, family, and genus levels, and then genetically by comparing the microbiota of lambs selected for extreme breeding values for residual feed intake or feeding rate. Our results confirmed the major effect of diet on the ruminal microbiota composition. The microbiota of lambs consuming a forage-based diet was distinguished by higher microbial diversity and also by higher relative abundance of , whereas and were relatively more abundant in the microbiota of lambs consuming a concentrate-based diet. Moreover, the comparison of lambs divergent for residual feed intake breeding values revealed that regardless of diet, more efficient lambs possessed a ruminal microbiota enriched in , and , but depleted in and . The connection between microbiota composition and feeding rate was more tenuous, with no link between the abundance of particular genera and lambs genetically divergent for feeding rate.

DOI10.3389/fmicb.2021.759432
Alternate JournalFront Microbiol
PubMed ID34759912
PubMed Central IDPMC8573263