Dose-response effects of Asparagopsis taxiformis and Oedogonium sp. on in vitro fermentation and methane production

L Machado; M Magnusson; Nicholas A Paul; R Kinley; R de Nys; N Tomkins

doi:10.1007/s10811-015-0639-9

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Dose-response effects of Asparagopsis taxiformis and Oedogonium sp. on in vitro fermentation and methane production

Journal article

Peer reviewed

Dose-response effects of Asparagopsis taxiformis and Oedogonium sp. on in vitro fermentation and methane production

L Machado, M Magnusson, Nicholas A Paul, R Kinley, R de Nys and N Tomkins

Journal of Applied Phycology, Vol.28(2), pp.1443-1452

2016

DOI: https://doi.org/10.1007/s10811-015-0639-9

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Abstract

asparagopsis

cattle feed

greenhouse gas mitigation

methane

rhodophyta

ruminant

volatile fatty acids

This study aimed to identify the optimal doses of the macroalgae Asparagopsis taxiformis and Oedogonium sp., individually and in combination, which would decrease the in vitro production of methane while minimizing adverse effects on fermentation, using rumen inoculant from Bos indicus steers. The dose-response experiment evaluated ten doses of Asparagopsis [ranging from 0 to 16.7 % of the organic matter (OM) incubated] and seven doses of Oedogonium (ranging from 0 to 100 % OM) using Rhodes grass hay as a basal substrate. Asparagopsis was highly effective in decreasing the production of methane with a reduction of 99 % at doses as low as 2 % OM basis. However, a dose of 2 % OM also decreased the production of volatile fatty acids (VFA). Oedogonium was less effective with doses ≥50 % OM significantly decreasing the production of methane. A combination of Asparagopsis (2 % OM) and Oedogonium (25 and 50 % OM) continued to suppress the production of methane, independent of the inclusion rate of Oedogonium. The effectiveness of Asparagopsis demonstrates its potential for the mitigation of methane emissions from ruminants at inclusion rates of ≤2 % OM. Oedogonium is a potential feed supplement due to its nutritional value, but supplements ≤25 % OM are recommended to avoid adverse effects on apparent in vitro fermentation. © 2015, Springer Science+Business Media Dordrecht.

Details

Title: Dose-response effects of Asparagopsis taxiformis and Oedogonium sp. on in vitro fermentation and methane production
Authors: L Machado (Author) - James Cook University
M Magnusson (Author) - James Cook University
Nicholas A Paul (Author) - James Cook University
R Kinley (Author) - James Cook University
R de Nys (Author) - James Cook University
N Tomkins (Author) - James Cook University
Publication details: Journal of Applied Phycology, Vol.28(2), pp.1443-1452
Publisher: Springer Netherlands
Date published: 2016
DOI: 10.1007/s10811-015-0639-9
ISSN: 0921-8971
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450528702621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Biotechnology & Applied Microbiology; Marine & Freshwater Biology

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