Journal article Closed Access

Seaweed supplementation to mitigate methane (CH4) emissions by cattle (SeaCH4NGE-PLUS)

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

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    <dct:title>Seaweed supplementation to mitigate methane (CH4) emissions by cattle (SeaCH4NGE-PLUS)</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2023</dct:issued>
    <dcat:keyword>seaweed</dcat:keyword>
    <dcat:keyword>feed</dcat:keyword>
    <dcat:keyword>algae</dcat:keyword>
    <dcat:keyword>macroalgae</dcat:keyword>
    <dcat:keyword>macrominerals</dcat:keyword>
    <dcat:keyword>bromoform</dcat:keyword>
    <dcat:keyword>methane</dcat:keyword>
    <dcat:keyword>climate change</dcat:keyword>
    <dcat:keyword>trace elements</dcat:keyword>
    <dcat:keyword>iodine</dcat:keyword>
    <dcat:keyword>cattle</dcat:keyword>
    <dcat:keyword>cows</dcat:keyword>
    <dcat:keyword>quality</dcat:keyword>
    <dcat:keyword>safety</dcat:keyword>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2023-12-31</dct:issued>
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    <dct:description>&lt;p&gt;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.&lt;/p&gt; &lt;p&gt;This report is closed until 31.12.2023.&lt;br&gt; ___&lt;/p&gt; &lt;p&gt;&amp;THORN;essi sk&amp;yacute;rsla inniheldur helstu tilraunani&amp;eth;urst&amp;ouml;&amp;eth;ur &amp;uacute;r verkefninu SeaCH4NGE-PLUS.&amp;nbsp;&amp;Iacute; stuttu m&amp;aacute;li s&amp;yacute;ndi skimun &amp;aacute; efnainnihaldi u.&amp;thorn;.b. 20 &amp;thorn;&amp;ouml;rungategunda sem safna&amp;eth; var &amp;aacute; &amp;Iacute;slandi 2020 og 2021, ekki fram &amp;aacute; br&amp;oacute;m&amp;oacute;formr&amp;iacute;kt &amp;thorn;ang, en bromoform r&amp;iacute;kt &amp;thorn;ang getur haft metan minnkandi &amp;aacute;hrif &amp;thorn;egar &amp;thorn;a&amp;eth; er gefi&amp;eth; nautgripum.&amp;nbsp;S&amp;yacute;ni af br&amp;uacute;n&amp;thorn;&amp;ouml;rungum voru gjarnan h&amp;aacute; &amp;iacute; fen&amp;oacute;linnihaldi, sem bendir til mikils fl&amp;oacute;r&amp;oacute;tann&amp;iacute;ninnihalds sem hefur veri&amp;eth; tengt h&amp;oacute;flegri metanl&amp;aelig;kkun. Ranns&amp;oacute;knir &amp;aacute; Asparagopsis &amp;thorn;&amp;ouml;rungum.&amp;nbsp;gaf til kynna a&amp;eth; &amp;thorn;au s&amp;yacute;ni g&amp;aelig;tu haft stutt geymslu&amp;thorn;ol, en &amp;aacute;hrif voru minni en reikna&amp;eth; var me&amp;eth;.&amp;nbsp;Gerjun getur haft l&amp;iacute;tilleg j&amp;aacute;kv&amp;aelig;&amp;eth; &amp;aacute;hrif &amp;aacute; metanframlei&amp;eth;slu (&amp;thorn;.e.a.s. dregi&amp;eth; a&amp;eth;eins meira &amp;uacute;r framlei&amp;eth;slu), en &amp;uacute;tdr&amp;aacute;ttur af fl&amp;oacute;r&amp;oacute;tann&amp;iacute;num haf&amp;eth;i ekki afgerandi &amp;aacute;hrif &amp;aacute; metanframlei&amp;eth;slu.&amp;nbsp;&lt;/p&gt; &lt;p&gt;&amp;THORN;essi sk&amp;yacute;rsla er lokU&amp;eth; til 31.12.2023.&lt;/p&gt; &lt;p&gt;&amp;nbsp;&lt;/p&gt;</dct:description>
    <dct:description>Funding: Loftslagssjóður, Rannís</dct:description>
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Publication date:
December 31, 2023
DOI:
10.5281/zenodo.5520985

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Keyword(s):
seaweed feed algae macroalgae macrominerals bromoform methane climate change trace elements iodine cattle cows quality safety

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