Variability and Potential of Seaweeds as Ingredients of Ruminant Diets: An In Vitro Study

This study was designed to analyze the chemical composition and in vitro rumen fermentation of eight seaweed species (Brown: Alaria esculenta, Laminaria digitata, Pelvetia canaliculata, Saccharina latissima; Red: Mastocarpus stellatus, Palmaria palmata and Porphyra sp.; Green: Cladophora rupestris)...

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Bibliographic Details
Published in:Animals (Basel) 2019-10, Vol.9 (10), p.851
Main Authors: de la Moneda, Ana, Carro, Maria Dolores, Weisbjerg, Martin R., Roleda, Michael Y., Lind, Vibeke, Novoa-Garrido, Margarita, Molina-Alcaide, Eduarda
Format: Article
Language:English
Subjects:
Alaria esculenta
Algae
Animal feeding and feeds
Chemical composition
Degradability
Diet
Feeds
Fermentation
Food and nutrition
Goats
Health aspects
in vitro rumen fermentation
Laminaria digitata
Livestock
Marine algae
Methane
Nitrogen
Palmaria palmata
Pelvetia canaliculata
Phenols (Class of compounds)
Physiological aspects
Polyphenols
Porphyra
Rumen
Rumen fermentation
Ruminants
Saccharina latissima
Seaweeds
Spring (season)
Starch
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Summary:This study was designed to analyze the chemical composition and in vitro rumen fermentation of eight seaweed species (Brown: Alaria esculenta, Laminaria digitata, Pelvetia canaliculata, Saccharina latissima; Red: Mastocarpus stellatus, Palmaria palmata and Porphyra sp.; Green: Cladophora rupestris) collected in Norway during spring and autumn. Moreover, the in vitro ruminal fermentation of seventeen diets composed of 1:1 oat hay:concentrate, without (control diet) or including seaweeds was studied. The ash and N contents were greater (p < 0.001) in seaweeds collected during spring than in autumn, but autumn-seaweeds had greater total extractable polyphenols. Nitrogen in red and green seaweeds was greater than 2.20 and in brown seaweeds, it was lower than 1.92 g/kg DM. Degradability after 24 h of fermentation was greater in spring seaweeds than in autumn, with Palmaria palmata showing the greatest value and Pelvetia canaliculata the lowest. Seaweeds differed in their fermentation pattern, and autumn Alaria esculenta, Laminaria digitata, Saccharina latissima and Palmaria palmata were similar to high-starch feeds. The inclusion of seaweeds in the concentrate of a diet up to 200 g/kg concentrate produced only subtle effects on in vitro ruminal fermentation.
ISSN:2076-2615
2076-2615
DOI:10.3390/ani9100851