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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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/10/7/1526 |
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| author | Eric E. Newton Ásta H. Pétursdóttir Gunnar Ríkharðsson Corentin Beaumal Natasa Desnica Konstantina Giannakopoulou Darren Juniper Partha Ray Sokratis Stergiadis |
| author_facet | Eric E. Newton Ásta H. Pétursdóttir Gunnar Ríkharðsson Corentin Beaumal Natasa Desnica Konstantina Giannakopoulou Darren Juniper Partha Ray Sokratis Stergiadis |
| author_sort | Eric E. Newton |
| collection | DOAJ |
| 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% <i>Ascophyllum nodosum</i>: 9% <i>Laminaria digitata</i> (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. |
| first_indexed | 2024-03-10T09:39:15Z |
| format | Article |
| id | doaj.art-7137c90f6e2c4f5ba3d8abcd4c1aada2 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T09:39:15Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-7137c90f6e2c4f5ba3d8abcd4c1aada22023-11-22T03:46:39ZengMDPI AGFoods2304-81582021-07-01107152610.3390/foods10071526Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal ConcentrationsEric E. Newton0Ásta H. Pétursdóttir1Gunnar Ríkharðsson2Corentin Beaumal3Natasa Desnica4Konstantina Giannakopoulou5Darren Juniper6Partha Ray7Sokratis Stergiadis8Department of Animal Sciences, School of Agriculture Policy and Development, University of Reading, Earley Gate, P.O. Box 237, Reading RG6 6EU, UKMatís Ltd., Vínlandsleid 12, 113 Reykjavik, IcelandBSSL, Agricultural Society of South Iceland, Austurvegur 1, 800 Selfoss, IcelandMatís Ltd., Vínlandsleid 12, 113 Reykjavik, IcelandMatís Ltd., Vínlandsleid 12, 113 Reykjavik, IcelandDepartment of Animal Sciences, School of Agriculture Policy and Development, University of Reading, Earley Gate, P.O. Box 237, Reading RG6 6EU, UKDepartment of Animal Sciences, School of Agriculture Policy and Development, University of Reading, Earley Gate, P.O. Box 237, Reading RG6 6EU, UKDepartment of Animal Sciences, School of Agriculture Policy and Development, University of Reading, Earley Gate, P.O. Box 237, Reading RG6 6EU, UKDepartment of Animal Sciences, School of Agriculture Policy and Development, University of Reading, Earley Gate, P.O. Box 237, Reading RG6 6EU, UKThis 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% <i>Ascophyllum nodosum</i>: 9% <i>Laminaria digitata</i> (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.https://www.mdpi.com/2304-8158/10/7/1526milkiodinemineralsseaweed<i>Laminaria digitata</i><i>Ascophyllum nodosum</i> |
| spellingShingle | Eric E. Newton Ásta H. Pétursdóttir Gunnar Ríkharðsson Corentin Beaumal Natasa Desnica Konstantina Giannakopoulou Darren Juniper Partha Ray Sokratis Stergiadis Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations Foods milk iodine minerals seaweed <i>Laminaria digitata</i> <i>Ascophyllum nodosum</i> |
| 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 | milk iodine minerals seaweed <i>Laminaria digitata</i> <i>Ascophyllum nodosum</i> |
| url | https://www.mdpi.com/2304-8158/10/7/1526 |
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