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
2020
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Online Access: | https://doi.org/10.24200/jams.vol25iss0pp20-26 https://doaj.org/article/067f14cbbca64899954cbc4c6bfbfc61 |
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ftdoajarticles:oai:doaj.org/article:067f14cbbca64899954cbc4c6bfbfc61 2023-05-15T15:31:06+02:00 Feed intake in Atlantic salmon fed with or without surface spreading of feed Turid Synnøve Aas Trine Ytrestøyl Torbjørn Åsgård Kristoffer Rist Skøien Morten Omholt Alver Jo Arve Alfredsen 2020-04-01T00:00:00Z https://doi.org/10.24200/jams.vol25iss0pp20-26 https://doaj.org/article/067f14cbbca64899954cbc4c6bfbfc61 EN eng Sultan Qaboos University https://journals.squ.edu.om/index.php/jams/article/view/3162 https://doaj.org/toc/2410-1060 https://doaj.org/toc/2410-1079 2410-1060 2410-1079 doi:10.24200/jams.vol25iss0pp20-26 https://doaj.org/article/067f14cbbca64899954cbc4c6bfbfc61 Journal of Agricultural and Marine Sciences, Vol 25, Iss 0, Pp 20-26 (2020) atlantic salmon spreading of feed feed intake feeding behavior Aquaculture. Fisheries. Angling SH1-691 Agriculture (General) S1-972 article 2020 ftdoajarticles https://doi.org/10.24200/jams.vol25iss0pp20-26 2022-12-31T13:30:51Z 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. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Journal of Agricultural and Marine Sciences [JAMS] 25 20 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
atlantic salmon spreading of feed feed intake feeding behavior Aquaculture. Fisheries. Angling SH1-691 Agriculture (General) S1-972 |
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atlantic salmon spreading of feed feed intake feeding behavior Aquaculture. Fisheries. Angling SH1-691 Agriculture (General) S1-972 Turid Synnøve Aas Trine Ytrestøyl Torbjørn Åsgård Kristoffer Rist Skøien Morten Omholt Alver Jo Arve Alfredsen Feed intake in Atlantic salmon fed with or without surface spreading of feed |
topic_facet |
atlantic salmon spreading of feed feed intake feeding behavior Aquaculture. Fisheries. Angling SH1-691 Agriculture (General) S1-972 |
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. |
format |
Article in Journal/Newspaper |
author |
Turid Synnøve Aas Trine Ytrestøyl Torbjørn Åsgård Kristoffer Rist Skøien Morten Omholt Alver Jo Arve Alfredsen |
author_facet |
Turid Synnøve Aas Trine Ytrestøyl Torbjørn Åsgård Kristoffer Rist Skøien Morten Omholt Alver Jo Arve Alfredsen |
author_sort |
Turid Synnøve Aas |
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://doi.org/10.24200/jams.vol25iss0pp20-26 https://doaj.org/article/067f14cbbca64899954cbc4c6bfbfc61 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Agricultural and Marine Sciences, Vol 25, Iss 0, Pp 20-26 (2020) |
op_relation |
https://journals.squ.edu.om/index.php/jams/article/view/3162 https://doaj.org/toc/2410-1060 https://doaj.org/toc/2410-1079 2410-1060 2410-1079 doi:10.24200/jams.vol25iss0pp20-26 https://doaj.org/article/067f14cbbca64899954cbc4c6bfbfc61 |
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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1766361592961695744 |