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Animal Production Science Animal Production Science Society
Food, fibre and pharmaceuticals from animals
REVIEW

The role of microbiota in animal health and productivity: misinterpretations and limitations

Yadav S. Bajagai https://orcid.org/0000-0002-3043-071X A , Mark Trotter https://orcid.org/0000-0001-6363-2193 A , Thomas M. Williams https://orcid.org/0000-0001-7205-2270 A , Diogo F. A. Costa https://orcid.org/0000-0001-8118-8380 A , Maria M. Whitton https://orcid.org/0000-0002-2395-5809 A , Xipeng Ren https://orcid.org/0000-0002-1155-4821 A , Cara S. Wilson https://orcid.org/0000-0002-9696-2356 A and Dragana Stanley https://orcid.org/0000-0001-7019-4726 A *
+ Author Affiliations
- Author Affiliations

A Central Queensland University, Institute for Future Farming Systems, Rockhampton, Qld, Australia.

* Correspondence to: D.Stanley@cqu.edu.au

Handling Editor: Reza Barekatain

Animal Production Science - https://doi.org/10.1071/AN21515
Submitted: 12 October 2021  Accepted: 23 December 2021   Published online: 22 February 2022

© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing

Abstract

The rise of sequencing technology brought about a surge of new methodologies that offered a new and deeper level of understanding of the role of the microbiome in the health and performance of livestock. This started a chain reaction in technology evolution, and a decade later, we have developed a new appreciation of a healthy gut and the role of early colonisation and nutrition in developing the microbiome, and its subsequent impact on animal productivity. An abundance of new products flooded the livestock supplement market with the promise of improving the health of intestinal microbiota. However, the impact of these products and any potential gains they might provide have not always been quantified or validated. Further to this, the potential interactions with the microbial community naturally occurring in the feed-base have not commonly been considered. We have recently shown that animal feed carries a complex microbial community that can have various impacts, including negating farm biosecurity measures. The ruminant animal provides an even greater level of complexity where physiological drivers act to maintain ruminal homeostasis. Despite many advances, numerous knowledge gaps remain, and the methodologies are not without their challenges with almost constant evolution in analysing and interpreting data. In this paper, we will discuss the benefits, challenges and shortfalls of microbiome science, its interfaces with multi-omics research and the strategies of its contribution to animal production science.

Keywords: 16S, animal production, intestinal microbiota, livestock, cattle, sheep, pig, poultry.


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