Effect of carbon monoxide for Atlantic salmon (Salmo salar L.) slaughtering on stress response and fillet shelf life

The effect of carbon monoxide (CO) as stunning method in Atlantic salmon (Salmo salar L.) on stress indicators (adrenaline, A; noradrenaline, NAD) and on fillets quality during the shelf life has been investigated. The CO was dissolved into tanks with salmon for 8 and 20 min to obtain fish groups CO...

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Bibliographic Details
Published in:Aquaculture
Main Authors: Concollato A., Parisi G., Olsen R. E., Kvamme B. O., Slinde E., DALLE ZOTTE, ANTONELLA
Other Authors: Concollato, A., Parisi, G., Olsen, R. E., Kvamme, B. O., Slinde, E., DALLE ZOTTE, Antonella
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier Ltd 2014
Subjects:
salmo salar
fish
carbon monoxide
slaughter
stre
fillet
shelf life
Slaughter
Atlantic salmon
Salmo salar
Online Access:http://hdl.handle.net/11577/2842302
https://doi.org/10.1016/j.aquaculture.2014.05.040
Description
Summary:The effect of carbon monoxide (CO) as stunning method in Atlantic salmon (Salmo salar L.) on stress indicators (adrenaline, A; noradrenaline, NAD) and on fillets quality during the shelf life has been investigated. The CO was dissolved into tanks with salmon for 8 and 20 min to obtain fish groups CO8 and CO20, respectively. These groups were compared to a non-stressed control group (C). All the fish were hauled out from the tank and killed by percussion. Adrenaline content of CO20 group was 1.8 and 1.7-fold higher than CO8 and C groups respectively (P b 0.001), which exhibited similar values. Noradrenaline content was higher in CO20 than in C group (8.1 vs. 5.4 ng/ml plasma; P b 0.0001). The CO treatment resulted in a small significant increase in lightness and yellowness, not altering the overall “natural” colour of the fillet. CO treatment caused a rapid onset of rigor mortis and a small but significant increase in drip loss (P b 0.05).

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