The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar)
A common strategy for aquafeed manufacturers has been the utilisation of relatively large amounts of terrestrial, both animal and plant, oil sources to produce diets with a high energy content. The provision of high fat diets is aimed at promoting the utilisation of energy from lipid, thus increasin...
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ftdeakinunifig:oai:figshare.com:article/20782594 2024-06-23T07:51:16+00:00 The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) Tom Mock David Francis Matt Jago BD Glencross RP Smullen Russell Keast GM Turchini 2019-02-25T00:00:00Z http://hdl.handle.net/10536/DRO/DU:30117230 https://figshare.com/articles/journal_contribution/The_impact_of_dietary_protein_lipid_ratio_on_growth_performance_fatty_acid_metabolism_product_quality_and_waste_output_in_Atlantic_salmon_Salmo_salar_/20782594 unknown http://hdl.handle.net/10536/DRO/DU:30117230 https://figshare.com/articles/journal_contribution/The_impact_of_dietary_protein_lipid_ratio_on_growth_performance_fatty_acid_metabolism_product_quality_and_waste_output_in_Atlantic_salmon_Salmo_salar_/20782594 All Rights Reserved Fisheries sciences not elsewhere classified Zoology not elsewhere classified Protein Lipid Environment Atlantic salmon Aquafeed 3005 Fisheries sciences Text Journal contribution 2019 ftdeakinunifig 2024-06-13T00:19:18Z A common strategy for aquafeed manufacturers has been the utilisation of relatively large amounts of terrestrial, both animal and plant, oil sources to produce diets with a high energy content. The provision of high fat diets is aimed at promoting the utilisation of energy from lipid, thus increasing the amount of dietary protein used for tissue synthesis. However, in recent years the cost of marine sourced dietary lipids has risen, at the same time, farming operations are under increasing pressure to limit environmental degradation associated with nitrogenous waste effluent. Currently there is limited information available regarding the environmental and economic impacts of an altered dietary protein: lipid ratio in diets for large Atlantic salmon (Salmo salar) reared in seawater, presenting a potential impediment for nutritional based solutions. Accordingly the present study compared two isoenergetic diets with varied protein: lipid ratios via an assessment of growth, fatty acid utilisation, human nutritional quality, nitrogenous waste output and economic considerations. The trial diets were fed to the fish for the final 150 days of an on-farm grow-out period and resulted in minimal differences in fish growth, fatty acid utilisation and fillet quality. A decreased dietary protein: lipid ratio resulted in a more efficient protein utilisation both in terms of digestibility and assimilation into fish and, therefore, nitrogenous waste output was reduced. However, due to small differences in feed utilisation, the cost of fish production was numerically higher. Article in Journal/Newspaper Atlantic salmon Salmo salar DRO - Deakin Research Online |
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DRO - Deakin Research Online |
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ftdeakinunifig |
language |
unknown |
topic |
Fisheries sciences not elsewhere classified Zoology not elsewhere classified Protein Lipid Environment Atlantic salmon Aquafeed 3005 Fisheries sciences |
spellingShingle |
Fisheries sciences not elsewhere classified Zoology not elsewhere classified Protein Lipid Environment Atlantic salmon Aquafeed 3005 Fisheries sciences Tom Mock David Francis Matt Jago BD Glencross RP Smullen Russell Keast GM Turchini The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
topic_facet |
Fisheries sciences not elsewhere classified Zoology not elsewhere classified Protein Lipid Environment Atlantic salmon Aquafeed 3005 Fisheries sciences |
description |
A common strategy for aquafeed manufacturers has been the utilisation of relatively large amounts of terrestrial, both animal and plant, oil sources to produce diets with a high energy content. The provision of high fat diets is aimed at promoting the utilisation of energy from lipid, thus increasing the amount of dietary protein used for tissue synthesis. However, in recent years the cost of marine sourced dietary lipids has risen, at the same time, farming operations are under increasing pressure to limit environmental degradation associated with nitrogenous waste effluent. Currently there is limited information available regarding the environmental and economic impacts of an altered dietary protein: lipid ratio in diets for large Atlantic salmon (Salmo salar) reared in seawater, presenting a potential impediment for nutritional based solutions. Accordingly the present study compared two isoenergetic diets with varied protein: lipid ratios via an assessment of growth, fatty acid utilisation, human nutritional quality, nitrogenous waste output and economic considerations. The trial diets were fed to the fish for the final 150 days of an on-farm grow-out period and resulted in minimal differences in fish growth, fatty acid utilisation and fillet quality. A decreased dietary protein: lipid ratio resulted in a more efficient protein utilisation both in terms of digestibility and assimilation into fish and, therefore, nitrogenous waste output was reduced. However, due to small differences in feed utilisation, the cost of fish production was numerically higher. |
format |
Article in Journal/Newspaper |
author |
Tom Mock David Francis Matt Jago BD Glencross RP Smullen Russell Keast GM Turchini |
author_facet |
Tom Mock David Francis Matt Jago BD Glencross RP Smullen Russell Keast GM Turchini |
author_sort |
Tom Mock |
title |
The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
title_short |
The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
title_full |
The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
title_fullStr |
The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
title_full_unstemmed |
The impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in Atlantic salmon (Salmo salar) |
title_sort |
impact of dietary protein: lipid ratio on growth performance, fatty acid metabolism, product quality and waste output in atlantic salmon (salmo salar) |
publishDate |
2019 |
url |
http://hdl.handle.net/10536/DRO/DU:30117230 https://figshare.com/articles/journal_contribution/The_impact_of_dietary_protein_lipid_ratio_on_growth_performance_fatty_acid_metabolism_product_quality_and_waste_output_in_Atlantic_salmon_Salmo_salar_/20782594 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://hdl.handle.net/10536/DRO/DU:30117230 https://figshare.com/articles/journal_contribution/The_impact_of_dietary_protein_lipid_ratio_on_growth_performance_fatty_acid_metabolism_product_quality_and_waste_output_in_Atlantic_salmon_Salmo_salar_/20782594 |
op_rights |
All Rights Reserved |
_version_ |
1802642303371706368 |