Feed intake in Atlantic salmon fed with or without surface spreading of feed
In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in the fish. However, the impact on the feed pellets during spreading results in feed loss due to pellet breakage. In this study, feed intake, gr...
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Sultan Qaboos University
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2676047 2023-05-15T15:31:51+02:00 Feed intake in Atlantic salmon fed with or without surface spreading of feed Aas, Turid Synnøve Ytrestøyl, Trine Åsgård, Torbjørn Einar Skøien, Kristoffer Rist Alver, Morten Omholt Alfredsen, Jo Arve 2020 application/pdf https://hdl.handle.net/11250/2676047 https://doi.org/10.24200/jams.vol25iss0pp20-26 eng eng Sultan Qaboos University Nofima AS: 2424 CREATE Journal of Agricultural and Marine Sciences. 2020, 25 (1), 20-26. urn:issn:2410-1079 https://hdl.handle.net/11250/2676047 https://doi.org/10.24200/jams.vol25iss0pp20-26 cristin:1825695 Attribution-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nd/4.0/deed.no CC-BY-ND 20-26 25 Journal of Agricultural and Marine Sciences 1 Journal article 2020 ftntnutrondheimi https://doi.org/10.24200/jams.vol25iss0pp20-26 2020-09-09T22:33:33Z In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in the fish. However, the impact on the feed pellets during spreading results in feed loss due to pellet breakage. In this study, feed intake, growth and signs of aggressive behavior was compared in salmon fed without or with spreading of the feed on the surface area of the tanks. Atlantic salmon (Salmo salar) with initial body weight 0.6 kg were kept in 3.3 m 3 tanks supplied with sea water (salinity 32 %, mean temperature 11 °C) for one month. The salmon were fed one meal daily, either by dropping the feed from one point, or by spreading the feed over the water surface. Feed intake and growth was measured. Fin damage was given a score at termination of the trial as a measure of competitive behavior during feeding. The relative feed intake (i.e. percent of body weight per day) in salmon fed without spreading or with spreading of the feed was 0.63±0.05 and 0.64±0.02 %, respectively. The growth rate was identical in salmon fed without or with spreading of the feed, and no significant difference in variance in final weight was found. No difference in fin damage for salmon fed without or with spreading of the feed was revealed. The data showed that for the conditions used in this trial, spreading of feed had no influence on feed intake or growth of salmon. publishedVersion Copyright (c) 2020 Turid Synnøve Aas, Trine Ytrestøyl, Torbjørn Åsgård, Kristoffer Rist Skøien, Morten Omholt Alver, Jo Arve Alfredsen Creative Commons License This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License. Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Arve ENVELOPE(-22.183,-22.183,73.700,73.700) Journal of Agricultural and Marine Sciences [JAMS] 25 20 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in the fish. However, the impact on the feed pellets during spreading results in feed loss due to pellet breakage. In this study, feed intake, growth and signs of aggressive behavior was compared in salmon fed without or with spreading of the feed on the surface area of the tanks. Atlantic salmon (Salmo salar) with initial body weight 0.6 kg were kept in 3.3 m 3 tanks supplied with sea water (salinity 32 %, mean temperature 11 °C) for one month. The salmon were fed one meal daily, either by dropping the feed from one point, or by spreading the feed over the water surface. Feed intake and growth was measured. Fin damage was given a score at termination of the trial as a measure of competitive behavior during feeding. The relative feed intake (i.e. percent of body weight per day) in salmon fed without spreading or with spreading of the feed was 0.63±0.05 and 0.64±0.02 %, respectively. The growth rate was identical in salmon fed without or with spreading of the feed, and no significant difference in variance in final weight was found. No difference in fin damage for salmon fed without or with spreading of the feed was revealed. The data showed that for the conditions used in this trial, spreading of feed had no influence on feed intake or growth of salmon. publishedVersion Copyright (c) 2020 Turid Synnøve Aas, Trine Ytrestøyl, Torbjørn Åsgård, Kristoffer Rist Skøien, Morten Omholt Alver, Jo Arve Alfredsen Creative Commons License This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License. |
format |
Article in Journal/Newspaper |
author |
Aas, Turid Synnøve Ytrestøyl, Trine Åsgård, Torbjørn Einar Skøien, Kristoffer Rist Alver, Morten Omholt Alfredsen, Jo Arve |
spellingShingle |
Aas, Turid Synnøve Ytrestøyl, Trine Åsgård, Torbjørn Einar Skøien, Kristoffer Rist Alver, Morten Omholt Alfredsen, Jo Arve Feed intake in Atlantic salmon fed with or without surface spreading of feed |
author_facet |
Aas, Turid Synnøve Ytrestøyl, Trine Åsgård, Torbjørn Einar Skøien, Kristoffer Rist Alver, Morten Omholt Alfredsen, Jo Arve |
author_sort |
Aas, Turid Synnøve |
title |
Feed intake in Atlantic salmon fed with or without surface spreading of feed |
title_short |
Feed intake in Atlantic salmon fed with or without surface spreading of feed |
title_full |
Feed intake in Atlantic salmon fed with or without surface spreading of feed |
title_fullStr |
Feed intake in Atlantic salmon fed with or without surface spreading of feed |
title_full_unstemmed |
Feed intake in Atlantic salmon fed with or without surface spreading of feed |
title_sort |
feed intake in atlantic salmon fed with or without surface spreading of feed |
publisher |
Sultan Qaboos University |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2676047 https://doi.org/10.24200/jams.vol25iss0pp20-26 |
long_lat |
ENVELOPE(-22.183,-22.183,73.700,73.700) |
geographic |
Arve |
geographic_facet |
Arve |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
20-26 25 Journal of Agricultural and Marine Sciences 1 |
op_relation |
Nofima AS: 2424 CREATE Journal of Agricultural and Marine Sciences. 2020, 25 (1), 20-26. urn:issn:2410-1079 https://hdl.handle.net/11250/2676047 https://doi.org/10.24200/jams.vol25iss0pp20-26 cristin:1825695 |
op_rights |
Attribution-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.24200/jams.vol25iss0pp20-26 |
container_title |
Journal of Agricultural and Marine Sciences [JAMS] |
container_volume |
25 |
container_start_page |
20 |
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1766362355513425920 |