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Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations

This study investigated the effect of seaweed supplementation in dairy cow diets on milk yield, basic composition, and mineral concentrations. Thirty-seven Icelandic cows were split into three diet treatments: control (CON, no seaweed), low seaweed (LSW, 0.75% concentrate dry matter (DM), 13–40 g/co...

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Autores principales: Newton, Eric E., Pétursdóttir, Ásta H., Ríkharðsson, Gunnar, Beaumal, Corentin, Desnica, Natasa, Giannakopoulou, Konstantina, Juniper, Darren, Ray, Partha, Stergiadis, Sokratis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307245/
https://www.ncbi.nlm.nih.gov/pubmed/34359396
http://dx.doi.org/10.3390/foods10071526
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author Newton, Eric E.
Pétursdóttir, Ásta H.
Ríkharðsson, Gunnar
Beaumal, Corentin
Desnica, Natasa
Giannakopoulou, Konstantina
Juniper, Darren
Ray, Partha
Stergiadis, Sokratis
author_facet Newton, Eric E.
Pétursdóttir, Ásta H.
Ríkharðsson, Gunnar
Beaumal, Corentin
Desnica, Natasa
Giannakopoulou, Konstantina
Juniper, Darren
Ray, Partha
Stergiadis, Sokratis
author_sort Newton, Eric E.
collection PubMed
description This study investigated the effect of seaweed supplementation in dairy cow diets on milk yield, basic composition, and mineral concentrations. Thirty-seven Icelandic cows were split into three diet treatments: control (CON, no seaweed), low seaweed (LSW, 0.75% concentrate dry matter (DM), 13–40 g/cow/day), and high seaweed (HSW, 1.5% concentrate DM, 26–158 g/cow/day). Cows were fed the same basal diet of grass silage and concentrate for a week, and then were introduced to the assigned experimental diets for 6 weeks. The seaweed mix of 91% Ascophyllum nodosum: 9% Laminaria digitata (DM basis), feed, and milk samples were collected weekly. Data were analyzed using a linear mixed effects model, with diet, week, and their interaction as fixed factors, cow ID as random factor, and the pre-treatment week data as a covariate. When compared with CON milk, LSW and HSW milk had, respectively, less Se (−1.4 and −3.1 μg/kg milk) and more I (+744 and +1649 μg/kg milk), while HSW milk also had less Cu (−11.6 μg/kg milk) and more As (+0.17 μg/kg milk) than CON milk. The minimal changes or concentrations in milk for Se, Cu, and As cannot be associated with any effects on consumer nutrition, but care should be taken when I-rich seaweed is fed to cows to avoid excessive animal I supply and milk I concentrations.
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spelling pubmed-83072452021-07-25 Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations Newton, Eric E. Pétursdóttir, Ásta H. Ríkharðsson, Gunnar Beaumal, Corentin Desnica, Natasa Giannakopoulou, Konstantina Juniper, Darren Ray, Partha Stergiadis, Sokratis Foods Article This study investigated the effect of seaweed supplementation in dairy cow diets on milk yield, basic composition, and mineral concentrations. Thirty-seven Icelandic cows were split into three diet treatments: control (CON, no seaweed), low seaweed (LSW, 0.75% concentrate dry matter (DM), 13–40 g/cow/day), and high seaweed (HSW, 1.5% concentrate DM, 26–158 g/cow/day). Cows were fed the same basal diet of grass silage and concentrate for a week, and then were introduced to the assigned experimental diets for 6 weeks. The seaweed mix of 91% Ascophyllum nodosum: 9% Laminaria digitata (DM basis), feed, and milk samples were collected weekly. Data were analyzed using a linear mixed effects model, with diet, week, and their interaction as fixed factors, cow ID as random factor, and the pre-treatment week data as a covariate. When compared with CON milk, LSW and HSW milk had, respectively, less Se (−1.4 and −3.1 μg/kg milk) and more I (+744 and +1649 μg/kg milk), while HSW milk also had less Cu (−11.6 μg/kg milk) and more As (+0.17 μg/kg milk) than CON milk. The minimal changes or concentrations in milk for Se, Cu, and As cannot be associated with any effects on consumer nutrition, but care should be taken when I-rich seaweed is fed to cows to avoid excessive animal I supply and milk I concentrations. MDPI 2021-07-02 /pmc/articles/PMC8307245/ /pubmed/34359396 http://dx.doi.org/10.3390/foods10071526 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Newton, Eric E.
Pétursdóttir, Ásta H.
Ríkharðsson, Gunnar
Beaumal, Corentin
Desnica, Natasa
Giannakopoulou, Konstantina
Juniper, Darren
Ray, Partha
Stergiadis, Sokratis
Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title_full Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title_fullStr Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title_full_unstemmed Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title_short Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations
title_sort effect of dietary seaweed supplementation in cows on milk macrominerals, trace elements and heavy metal concentrations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307245/
https://www.ncbi.nlm.nih.gov/pubmed/34359396
http://dx.doi.org/10.3390/foods10071526
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