Feed supplementation with biochar may reduce poultry pathogens, including Campylobacter hepaticus, the causative agent of Spotty Liver Disease

Article


Willson, Nicky-Lee, Van, Thi T. H, Bhattarai, Surya P., Courtice, , Jodi M. C, McIntyre, Joshua R., Prasai, Tanka P., Moore, Robert J., Wals, Kerry and Stanley, Dragana. 2019. "Feed supplementation with biochar may reduce poultry pathogens, including Campylobacter hepaticus, the causative agent of Spotty Liver Disease ." PLoS One. 14 (4), pp. 1-16. https://doi.org/10.1371/journal.pone.0214471
Article Title

Feed supplementation with biochar may reduce poultry pathogens, including Campylobacter hepaticus, the causative agent of Spotty Liver Disease

ERA Journal ID39745
Article CategoryArticle
AuthorsWillson, Nicky-Lee, Van, Thi T. H, Bhattarai, Surya P., Courtice, , Jodi M. C, McIntyre, Joshua R., Prasai, Tanka P., Moore, Robert J., Wals, Kerry and Stanley, Dragana
Journal TitlePLoS One
Journal Citation14 (4), pp. 1-16
Article Numbere0214471
Number of Pages16
Year2019
PublisherPublic Library of Science (PLoS)
Place of PublicationUnited States
ISSN1932-6203
Digital Object Identifier (DOI)https://doi.org/10.1371/journal.pone.0214471
Web Address (URL)https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0214471
Abstract

Increased global regulation and restrictions on the non-therapeutic use of antibiotics in the poultry industry means that there is a need to identify alternatives that prevent infection while still conveying the growth and performance benefits afforded by their use. Biochars are produced by the incomplete pyrolysis of organic materials, with reports of use as a feed supplement and activity against pathogenic bacteria. In the current study the dose-dependent effects of biochar dietary inclusion in layer diets at 1%, 2% and 4% w/w were investigated to determine a) the efficacy of biochar as an anti-pathogenic additive on the intestinal microbiota and b) the optimal inclusion level. Biochar inclusion for anti-pathogenic effects was found to be most beneficial at 2% w/w. Poultry pathogens such as Gallibacterium anatis and campylobacters, including Campylobacter hepaticus, were found to be significantly lower in biochar fed birds. A shift in microbiota was also associated with the incorporation of 2% w/w biochar in the feed in two large scale trials on two commercial layer farms. Biochar inclusion for anti-pathogenic effects was found to be most beneficial at 2% w/w. Differential effects of the timing of biochar administration (supplementation beginning at hatch or at point of lay) were also evident, with greater impact on community microbial structure at 48 weeks of age when birds were fed from hatch rather than supplemented at point of lay.

KeywordsSpotty Liver Disease; antibiotics ; poultry industry
PubMed ID30943226
Byline AffiliationsCentral Queensland University
University of Adelaide
Royal Melbourne Institute of Technology (RMIT)
University of Southern Queensland
Ministry of Agricultural, Land Management and Cooperatives, Government of Nepal
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