Effects of seaweed extracts on in vitro rumen fermentation characteristics, methane production, and microbial abundance
Several seaweed extracts have been reported to have potential antimethanogenic effects in ruminants. In this study, the effect of three brown seaweed species ( Undaria pinnatifida , UPIN ; Sargassum fusiforme , SFUS ; and Sargassum fulvellum , SFUL ) on rumen fermentation characteristics, total gas,...
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Published in | Scientific reports Vol. 11; no. 1; p. 24092 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
16.12.2021
Nature Publishing Group Nature Portfolio |
Subjects | |
Online Access | Get full text |
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Summary: | Several seaweed extracts have been reported to have potential antimethanogenic effects in ruminants. In this study, the effect of three brown seaweed species (
Undaria pinnatifida
,
UPIN
;
Sargassum fusiforme
,
SFUS
; and
Sargassum fulvellum
,
SFUL
) on rumen fermentation characteristics, total gas, methane (CH
4
), carbon dioxide (CO
2
) production, and microbial populations were investigated using an in vitro batch culture system. Seaweed extract and its metabolites, total flavonoid and polyphenol contents were identified and compared. For the in vitro batch, 0.25 mg∙mL
−1
of each seaweed extract were used in 6, 12, 24, 36 and 48 h of incubation. Seaweed extract supplementation decreased CH
4
yield and its proportion to total gas production after 12, 24, and 48 h of incubation, while total gas production were not significantly different. Total volatile fatty acid and molar proportion of propionate increased with
SFUS
and
SFUL
supplementation after 24 h of incubation, whereas
UPIN
was not affected. Additionally,
SFUS
increased the absolute abundance of total bacteria, ciliate protozoa, fungi, methanogenic archaea, and
Fibrobacter succinogenes
. The relative proportions of
Butyrivibrio fibrisolvens
,
Butyrivibrio proteoclasticus,
and
Prevotella ruminicola
were lower with seaweed extract supplementation, whereas
Anaerovibrio lipolytica
increased. Thus, seaweed extracts can decrease CH
4
production, and alter the abundance of rumen microbial populations. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-021-03356-y |