December 31, 2023 Journal article Closed Access

Pétursdóttir, Ásta H.; Einarsdóttir, Brynja; Guðmundsdóttir, Elísabet Eik; Desnica, Natasa; Sim, Rebecca; Kuenzel, Susanne; Rodehutscord, Markus; Titze, Natascha; Wild, Katharina

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Pétursdóttir, Ásta H.</dc:creator>
  <dc:creator>Einarsdóttir, Brynja</dc:creator>
  <dc:creator>Guðmundsdóttir, Elísabet Eik</dc:creator>
  <dc:creator>Desnica, Natasa</dc:creator>
  <dc:creator>Sim, Rebecca</dc:creator>
  <dc:creator>Kuenzel, Susanne</dc:creator>
  <dc:creator>Rodehutscord, Markus</dc:creator>
  <dc:creator>Titze, Natascha</dc:creator>
  <dc:creator>Wild, Katharina</dc:creator>
  <dc:date>2023-12-31</dc:date>
  <dc:description>This report contains the main experimental results from the project SeaCH4NGE-PLUS. Briefly, the screening of chemical content of a range of seaweeds collected in Iceland in 2020 and 2021 did not identify a bromoform rich seaweed that had high promise as a methane reducing feed component for cattle. Certain samples of brown macroalgae were high in total phenolic content, indicating a high phlorotannin content that has been associated with a moderate methane reduction. That is consistent with the findings of this research. Samples of Asparagopsis sp. indicated that they may have a short shelf life to preserve the bromoform content. Fermentation may increase slightly the methane reduction potential of seaweed, but extracting phlorotannins did not yield a much higher reduction of methane as hypothesized.

This report is closed until 31.12.2023.
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Þessi skýrsla inniheldur helstu tilraunaniðurstöður úr verkefninu SeaCH4NGE-PLUS. Í stuttu máli sýndi skimun á efnainnihaldi u.þ.b. 20 þörungategunda sem safnað var á Íslandi 2020 og 2021, ekki fram á brómóformríkt þang, en bromoform ríkt þang getur haft metan minnkandi áhrif þegar það er gefið nautgripum. Sýni af brúnþörungum voru gjarnan há í fenólinnihaldi, sem bendir til mikils flórótanníninnihalds sem hefur verið tengt hóflegri metanlækkun. Rannsóknir á Asparagopsis þörungum. gaf til kynna að þau sýni gætu haft stutt geymsluþol, en áhrif voru minni en reiknað var með. Gerjun getur haft lítilleg jákvæð áhrif á metanframleiðslu (þ.e.a.s. dregið aðeins meira úr framleiðslu), en útdráttur af flórótannínum hafði ekki afgerandi áhrif á metanframleiðslu. 

Þessi skýrsla er lokUð til 31.12.2023.

 </dc:description>
  <dc:description>Funding: Loftslagssjóður, Rannís</dc:description>
  <dc:identifier>https://zenodo.org/record/5520985</dc:identifier>
  <dc:identifier>10.5281/zenodo.5520985</dc:identifier>
  <dc:identifier>oai:zenodo.org:5520985</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>doi:10.5281/zenodo.5520984</dc:relation>
  <dc:rights>info:eu-repo/semantics/closedAccess</dc:rights>
  <dc:subject>seaweed</dc:subject>
  <dc:subject>feed</dc:subject>
  <dc:subject>algae</dc:subject>
  <dc:subject>macroalgae</dc:subject>
  <dc:subject>macrominerals</dc:subject>
  <dc:subject>bromoform</dc:subject>
  <dc:subject>methane</dc:subject>
  <dc:subject>climate change</dc:subject>
  <dc:subject>trace elements</dc:subject>
  <dc:subject>iodine</dc:subject>
  <dc:subject>cattle</dc:subject>
  <dc:subject>cows</dc:subject>
  <dc:subject>quality</dc:subject>
  <dc:subject>safety</dc:subject>
  <dc:title>Seaweed supplementation to mitigate methane (CH4) emissions by cattle (SeaCH4NGE-PLUS)</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>