Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon
Microalgal biomass is a potential feed ingredient that can replace fishmeal and ensure sustainability standards in aquaculture. To understand the efficacy of the defatted biomass from the marine microalga, Desmodesmus sp. a 70-day feeding study was performed with Atlantic salmon (Salmo salar) smolts...
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Online Access: | https://doi.org/10.3389/fmars.2016.00067 https://doaj.org/article/ac16fec70900452eaaec6348d900531f |
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ftdoajarticles:oai:doaj.org/article:ac16fec70900452eaaec6348d900531f 2023-05-15T15:30:14+02:00 Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon Viswanath eKiron Mette eSørensen Mark eHuntley Ghana K Vasanth Yangyang eGong Dalia eDahle Anjana M. Palihawadana 2016-05-01T00:00:00Z https://doi.org/10.3389/fmars.2016.00067 https://doaj.org/article/ac16fec70900452eaaec6348d900531f EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00067/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2016.00067 https://doaj.org/article/ac16fec70900452eaaec6348d900531f Frontiers in Marine Science, Vol 3 (2016) Growth Microalgae Atlantic salmon Intestinal health Desmodesmus Feed performance Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2016 ftdoajarticles https://doi.org/10.3389/fmars.2016.00067 2022-12-31T05:57:35Z Microalgal biomass is a potential feed ingredient that can replace fishmeal and ensure sustainability standards in aquaculture. To understand the efficacy of the defatted biomass from the marine microalga, Desmodesmus sp. a 70-day feeding study was performed with Atlantic salmon (Salmo salar) smolts. Three groups of fish (av. wt. 167 g) were offered either a control feed (without the microalga) or the microalga-containing (10/20%) feeds. At the end of the feeding period, the growth indices (condition factor, specific growth rate) and survival of the microalga-fed fish were not significantly different from the respective values of the control fish, but the feed conversion ratios were inferior. The proximate composition of the whole body of salmon from the three groups did not vary significantly. Compared to the control fish, the alga-fed fish had lower lipid content (10% alga-fed fish) in their fillet. The protein and lipid digestibility in the three feeds did not differ significantly, but the digestibility of energy in the 10% alga-feed was significantly lower than that of the control feed. Furthermore, comparison of the distal intestinal proteome of Atlantic salmon revealed that the expressions of Alpha-2-HS-glycoprotein-like (Ahsg), Myosin-11 isoform X1 (My11) and Dihydrolipoyl dehydrogenase, mitochondrial-like (Dld) were altered by the microalgal feeding. Examination of the physiological status of the fish based on the serum antioxidant capacities did not reveal any alga-feed-related differences. Moreover, the expression of the selected immune and inflammatory marker genes and the micromorphological observations did not indicate any aberration in the intestinal health of the microalga-fed fish. It is possible to include 20% of defatted Desmodesmus sp. in the feeds of Atlantic salmon. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 3 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Growth Microalgae Atlantic salmon Intestinal health Desmodesmus Feed performance Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Growth Microalgae Atlantic salmon Intestinal health Desmodesmus Feed performance Science Q General. Including nature conservation geographical distribution QH1-199.5 Viswanath eKiron Mette eSørensen Mark eHuntley Ghana K Vasanth Yangyang eGong Dalia eDahle Anjana M. Palihawadana Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
topic_facet |
Growth Microalgae Atlantic salmon Intestinal health Desmodesmus Feed performance Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Microalgal biomass is a potential feed ingredient that can replace fishmeal and ensure sustainability standards in aquaculture. To understand the efficacy of the defatted biomass from the marine microalga, Desmodesmus sp. a 70-day feeding study was performed with Atlantic salmon (Salmo salar) smolts. Three groups of fish (av. wt. 167 g) were offered either a control feed (without the microalga) or the microalga-containing (10/20%) feeds. At the end of the feeding period, the growth indices (condition factor, specific growth rate) and survival of the microalga-fed fish were not significantly different from the respective values of the control fish, but the feed conversion ratios were inferior. The proximate composition of the whole body of salmon from the three groups did not vary significantly. Compared to the control fish, the alga-fed fish had lower lipid content (10% alga-fed fish) in their fillet. The protein and lipid digestibility in the three feeds did not differ significantly, but the digestibility of energy in the 10% alga-feed was significantly lower than that of the control feed. Furthermore, comparison of the distal intestinal proteome of Atlantic salmon revealed that the expressions of Alpha-2-HS-glycoprotein-like (Ahsg), Myosin-11 isoform X1 (My11) and Dihydrolipoyl dehydrogenase, mitochondrial-like (Dld) were altered by the microalgal feeding. Examination of the physiological status of the fish based on the serum antioxidant capacities did not reveal any alga-feed-related differences. Moreover, the expression of the selected immune and inflammatory marker genes and the micromorphological observations did not indicate any aberration in the intestinal health of the microalga-fed fish. It is possible to include 20% of defatted Desmodesmus sp. in the feeds of Atlantic salmon. |
format |
Article in Journal/Newspaper |
author |
Viswanath eKiron Mette eSørensen Mark eHuntley Ghana K Vasanth Yangyang eGong Dalia eDahle Anjana M. Palihawadana |
author_facet |
Viswanath eKiron Mette eSørensen Mark eHuntley Ghana K Vasanth Yangyang eGong Dalia eDahle Anjana M. Palihawadana |
author_sort |
Viswanath eKiron |
title |
Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
title_short |
Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
title_full |
Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
title_fullStr |
Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
title_full_unstemmed |
Defatted biomass of the microalga, Desmodesmus sp., can replace fishmeal in the feeds for Atlantic salmon |
title_sort |
defatted biomass of the microalga, desmodesmus sp., can replace fishmeal in the feeds for atlantic salmon |
publisher |
Frontiers Media S.A. |
publishDate |
2016 |
url |
https://doi.org/10.3389/fmars.2016.00067 https://doaj.org/article/ac16fec70900452eaaec6348d900531f |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Frontiers in Marine Science, Vol 3 (2016) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fmars.2016.00067/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2016.00067 https://doaj.org/article/ac16fec70900452eaaec6348d900531f |
op_doi |
https://doi.org/10.3389/fmars.2016.00067 |
container_title |
Frontiers in Marine Science |
container_volume |
3 |
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1766360681350692864 |