Aquaculture-related stress on rainbow trout (Oncorhynchus mykiss) and Arctic char (Salvelinus alpinus)

Nelson, Christopher

doi:10.33915/etd.1799

Cited by 3 publications

(5 citation statements)

References 58 publications

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“…In the companion study, Nelson (2003) reported that, during the 5.5‐h transport, the plasma cortisol of Arctic char subjected to AQUI‐S, CO 2 and water transport treatments recovered to resting, pretransport levels. Nelson (2003) concluded that CO 2 and ice‐slurry transport treatments were not ideal for reducing stress response. In percussion‐stunned fish, stress caused by CO 2 transport did not affect the muscle pH at harvest in a comparison of this treatment with control and water transport treatments.…”

Section: Resultsmentioning

confidence: 96%

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Transport and Stunning Affect Quality of Arctic Char Fillets

Jittinandana¹,

Kenney²,

Mazik³

et al. 2005

Journal of Muscle Foods

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Arctic char transport was conducted using AQUI‐S, gas carbon dioxide (CO 2 ), ice slurry or water for 5.5 h followed by CO 2 or by percussive stunning. The treatment without transport represented the control. At harvest and at 24‐h postmortem, transport in an ice slurry followed by percussive stunning resulted in the highest muscle pH; CO 2 stunning reduced muscle pH regardless of transport treatment. At 24‐h postmortem, the control treatment resulted in the firmest cooked products, while other transport conditions did not affect texture. Stunning with CO 2 produced a firmer texture compared with percussive stunning for cooked products derived from 24‐h and 4‐day postmortem refrigerated fillets. The transport treatment and the stunning method did not affect the muscle pH after a 4‐day storage at 3C.

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Section: Resultsmentioning

confidence: 96%

“…During each simulated transport, five fish were removed from each tote every 1.5 h for the analyses of physiological responses to the transport treatments. The physiological responses have been reported elsewhere (Nelson 2003).…”

Section: Methodsmentioning

confidence: 99%

Transport and Stunning Affect Quality of Arctic Char Fillets

Jittinandana¹,

Kenney²,

Mazik³

et al. 2005

Journal of Muscle Foods

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“…The high amount of monounsaturated fatty acids (i.e., 18:1n-9 in rapeseed oil) and saturated fatty acids (i.e., 16:0 in palm oil) makes them suitable as these fatty acids have been reported to be preferred for energy production in fish (Henderson & Sargent, 1985;Kiessling & Kiessling, 1993). In addition, moderate levels of 18:3n-3 are present in rapeseed oil, suggesting a great potential for endogenous conversion to EPA and DHA (Pettersson, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The high amount of monounsaturated fatty acids (i.e., 18:1n‐9 in rapeseed oil) and saturated fatty acids (i.e., 16:0 in palm oil) makes them suitable as these fatty acids have been reported to be preferred for energy production in fish (Henderson & Sargent, ; Kiessling & Kiessling, ). In addition, moderate levels of 18:3n‐3 are present in rapeseed oil, suggesting a great potential for endogenous conversion to EPA and DHA (Pettersson, ). Canola oil, a rapeseed oil with low erucic acid and low glucosinolate, is a potential alternative for fish oil in aquafeed, due to its suitable FA profile, abundance, low price and many other advantages (Canola Council of Canada ; Turchini et al., ).…”

Section: Introductionmentioning

confidence: 99%

“…It should contain moderate levels of 18:3n-3, the fatty acid precursor for the endogenous conversion into eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and low amounts of 18:2n-6 as it is poorly oxidized and therefore should be avoided (Bell et al, 2002). Two vegetable oils fulfilling these criteria are rapeseed oil and palm oil (Pettersson, 2010). The high amount of monounsaturated fatty acids (i.e., 18:1n-9 in rapeseed oil) and saturated fatty acids (i.e., 16:0 in palm oil) makes them suitable as these fatty acids have been reported to be preferred for energy production in fish (Henderson & Sargent, 1985;Kiessling & Kiessling, 1993).…”

Section: Introductionmentioning

confidence: 99%

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Canola oil, as a good alternative dietary lipid source in sturgeon: Effects on growth, physiology and fatty acid profile in Beluga sturgeonHuso husoL.

et al. 2018

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An 8‐week feeding trial was conducted on juvenile beluga sturgeon Huso huso to evaluate the effects of different dietary lipid levels and sources on growth performance, physiological indices, proximate composition and fatty acid (FA) profile. Four practical diets, which had either low level (120 g/kg) of canola oil (LCO) and fish oil (LFO) or high level (240 g/kg) of canola oil (HCO) and fish oil (HFO), were fed to triplicate groups of 25 beluga (mean initial body weight 207 ± 0.5 g). The growth performance of beluga was improved by replacing dietary fish oil with canola oil and increasing dietary lipid level. Except the number of red blood cells, lymphocytes, neutrophils and eosinophils, the rest of haematological factors including the values of haemoglobin, haematocrit, number of white blood cells, mean corpuscular haemoglobin concentration, cholesterol and triglyceride concentrations and the number of basophils and monocytes were not significantly affected by dietary lipid sources or levels. Results showed that both moisture and crude fat of the beluga muscle were affected by dietary lipid. The highest moisture and the lowest fat contents were found in the muscle of beluga fed fish oil (LFO). Moreover, the lowest moisture and the highest fat contents were observed in the muscle of beluga fed canola oil (HCO) (p < .05). The FA profile of the beluga muscle was significantly influenced by dietary treatments. The highest monounsaturated fatty acids, total n‐6 fatty acids containing linoleic acid and arachidonic acid, and total unsaturated fatty acids were found in fish fed canola oil (LCO and/or HCO) (p < .05). However, n‐3 fatty acids containing linolenic acid, eicosapentaenoic acid and docosahexaenoic acid were not affected by the diet (p > .05). FA profile of the beluga muscles reflected the proportions of CO and FO in the diet except that there was a decrease in oleic acid and linolenic acid, but an increase in arachidonic acid (C20:4n‐6), eicosapentaenoic acid and docosahexaenoic acid. The obtained data showed that canola oil is an excellent source of supplemental dietary lipid in a practical fish‐meal‐based diet of beluga sturgeon under the experimental conditions. Moreover, the data demonstrated that increasing dietary lipid up to 240 g/kg in beluga sturgeon resulted to improve growth performance and haematology.

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Effects of feed rations containing egg powder in different proportions on growth performance, feed utilization, body composition and survival rate of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) fry

Köse¹,

Karabulut²,

Kurtoğlu³

et al. 2021

EgeJFAS

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This study aims to determine the appropriate egg powder ratio that can be substituted into the fish meal to close the protein deficit without adversely affecting the development performance of rainbow trout fry (Oncorhynchus mykiss) (0.38±0.01 g and 3.55±0.05 cm). Also, the effects of egg powder used as a protein source on rainbow trout feed on growth performance, feed utilization, body composition, and survival rates were investigated. The egg powder ratio in the ration of the groups were arranged to be 0% (Control), 25% (E-25), 50% (E-50), 75% (E-75), and 100% (E-100) of the amount of protein obtained from fish meal. To evaluate their growth performance, fish were fed for 90 days between March and May, and additional feeding was given for 17 days for the challenge test. As a result of the study, when the more than 25% egg powder was added to the ration, the final body weight (FBW), weight gain (WG), weight gain rate (WGR), specific growth rate (SGR), feed intake (FI), and protein efficiency ratio (PER) had a statistically significant difference among the groups (p<0.05). It was determined that the difference between groups was insignificant in terms of condition factor (CF), and the addition of more than 25% egg powder to the ration increased the feed conversion ratio (FCR) statistically and significantly (p<0.05). As a result of the challenge test carried out with two different fish pathogens (Lactococcus garvieae and Yersinia ruckeri), it was determined that the addition of egg powder decreased the survival rate in all groups compared to the control group (p <0.05). As a result, it was concluded that up to 25% of egg powder can be used rainbow trout fry feeds, but continuous feeding with egg powder supplemented feeds may cause fish health problems.

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Aquaculture-related stress on rainbow trout (Oncorhynchus mykiss) and Arctic char (Salvelinus alpinus)

Abstract: Aquaculture-related Stress on Rainbow Trout (Oncorhynchus mykiss) and Arctic Char (Salvelinus alpinus

Cited by 3 publications

References 58 publications

Transport and Stunning Affect Quality of Arctic Char Fillets

Transport and Stunning Affect Quality of Arctic Char Fillets

Canola oil, as a good alternative dietary lipid source in sturgeon: Effects on growth, physiology and fatty acid profile in Beluga sturgeonHuso husoL.

Effects of feed rations containing egg powder in different proportions on growth performance, feed utilization, body composition and survival rate of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) fry

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