The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater
Biodensity is a major factor affecting the production and welfare of farmed fishes. Arctic charr (Salvelinus alpinus) were held at biodensities of 30, 60, 90, 120, and 150 kg/m3 during a 91 day study. Biodensity was found to have no significant effect on mortality, wet mass, fork length, condition f...
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University of Guelph
2018
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ftunivguelph:oai:atrium.lib.uoguelph.ca:10214/14256 2024-09-15T17:52:20+00:00 The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater Sevier, Andrew Moccia, Richard 2018-09-05 application/pdf http://hdl.handle.net/10214/14256 en eng University of Guelph http://hdl.handle.net/10214/14256 All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. aquaculture arctic charr biodensity stocking welfare production feeding growth morphology physiology stress Thesis 2018 ftunivguelph 2024-08-20T23:47:41Z Biodensity is a major factor affecting the production and welfare of farmed fishes. Arctic charr (Salvelinus alpinus) were held at biodensities of 30, 60, 90, 120, and 150 kg/m3 during a 91 day study. Biodensity was found to have no significant effect on mortality, wet mass, fork length, condition factor, HSI, VSI, eviscerated carcass mass or fin damage, or on white muscle protein synthesis. Growth rates were lower in charr reared at high biodensities (120, and 150 kg/m3), and feed efficiency was negatively affected at both the highest (120, and 150 kg/m3) and lowest (30 kg/m3) biodensities. Muscle protein content was lowest in charr reared at 90 kg/m3. Plasma cortisol indicated that Arctic charr are more stressed at lower biodensities, but was not correlated with growth or feed efficiency. The results support an optimal biodensity range for charr culture between 60 and 90 kg/m3 to optimize production and welfare. Ontario Ministry of Agriculture, Food and Rural Affairs Thesis Arctic charr Salvelinus alpinus University of Guelph: DSpace digital archive |
institution |
Open Polar |
collection |
University of Guelph: DSpace digital archive |
op_collection_id |
ftunivguelph |
language |
English |
topic |
aquaculture arctic charr biodensity stocking welfare production feeding growth morphology physiology stress |
spellingShingle |
aquaculture arctic charr biodensity stocking welfare production feeding growth morphology physiology stress Sevier, Andrew The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
topic_facet |
aquaculture arctic charr biodensity stocking welfare production feeding growth morphology physiology stress |
description |
Biodensity is a major factor affecting the production and welfare of farmed fishes. Arctic charr (Salvelinus alpinus) were held at biodensities of 30, 60, 90, 120, and 150 kg/m3 during a 91 day study. Biodensity was found to have no significant effect on mortality, wet mass, fork length, condition factor, HSI, VSI, eviscerated carcass mass or fin damage, or on white muscle protein synthesis. Growth rates were lower in charr reared at high biodensities (120, and 150 kg/m3), and feed efficiency was negatively affected at both the highest (120, and 150 kg/m3) and lowest (30 kg/m3) biodensities. Muscle protein content was lowest in charr reared at 90 kg/m3. Plasma cortisol indicated that Arctic charr are more stressed at lower biodensities, but was not correlated with growth or feed efficiency. The results support an optimal biodensity range for charr culture between 60 and 90 kg/m3 to optimize production and welfare. Ontario Ministry of Agriculture, Food and Rural Affairs |
author2 |
Moccia, Richard |
format |
Thesis |
author |
Sevier, Andrew |
author_facet |
Sevier, Andrew |
author_sort |
Sevier, Andrew |
title |
The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
title_short |
The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
title_full |
The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
title_fullStr |
The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
title_full_unstemmed |
The effects of biodensity on the welfare and production performance of Arctic charr (Salvelinus alplinus) in freshwater |
title_sort |
effects of biodensity on the welfare and production performance of arctic charr (salvelinus alplinus) in freshwater |
publisher |
University of Guelph |
publishDate |
2018 |
url |
http://hdl.handle.net/10214/14256 |
genre |
Arctic charr Salvelinus alpinus |
genre_facet |
Arctic charr Salvelinus alpinus |
op_relation |
http://hdl.handle.net/10214/14256 |
op_rights |
All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1810294390528147456 |