Rigor in Atlantic salmon as affected by crowding stress prior to chilling before slaughter

Skjervold, Per Olav; Fjæra, Svein Olav; Østby, Per Braarød

doi:10.1016/s0044-8486(99)00037-x

Cited by 79 publications

(47 citation statements)

References 20 publications

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“…Generally, all the blood variables measured indicated some recovery during the 24 hour period in the resting cages. In the resting cages cortisol reached the lowest levels within the whole journey (103.2 ng/ml), similar to those values found in previous studies (Skjervold et al 1999(Skjervold et al , 2001) for uncrowded salmon.…”

Section: Discussionsupporting

confidence: 90%

Effects of commercial live transportation and preslaughter handling of Atlantic salmon on blood constituents

et al. 2010

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RESUMENSe evaluaron los efectos de la cosecha con transporte en wellboat y el manejo ante mortem sobre los constituyentes sanguíneos relacionados al estrés en salmones (Salmo salar). Diez peces fueron muestreados en cada una de las seis etapas denominadas: centro; después de la carga; después del transporte; después de la descarga; después del reposo y después del bombeo hacia la planta procesadora. Se determinaron las concentraciones sanguíneas de cortisol, glucosa, lactato, sodio, cloruro y osmolalidad. En cada etapa, las concentraciones de los constituyentes sanguíneos analizados cambiaron de acuerdo con la severidad del tratamiento aplicado. Los resultados de este estudio indican que una de las etapas más estresantes fue el bombeo desde las jaulas de reposo hacia la planta de proceso. La concentración de todas las variables estudiadas disminuyó después de 24 horas en las jaulas de reposo, y todas, a excepción de la glucosa, aumentaron después de que los peces fueran bombeados a través del salmoducto desde las jaulas de reposo a la planta de proceso. Esto confirma que este último manejo es la etapa más estresante de las estudiadas durante este transporte comercial.

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Section: Discussionsupporting

confidence: 90%

Effects of commercial live transportation and preslaughter handling of Atlantic salmon on blood constituents

et al. 2010

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“…The 242.79 ng/ ml of cortisol obtained in the anaesthetized fish (table 1) was higher than the 100.4 ng/ml observed in previous work in low density and uncrowded Atlantic salmon (Skjervold et al 1999, Skjervold et al 2001. Other studies have found even lower values in the order of 20.9 ng/ml for unstressed salmon (Erikson et al 1999).…”

Section: Discussioncontrasting

confidence: 50%

“…A primary response to stress is an increase in plasma cortisol levels (Barton and Iwama 1991, Barton 2002, Acerete et al 2004, and it is widely used to index a stressful stimulus (Skjervold et al 1999). The 242.79 ng/ ml of cortisol obtained in the anaesthetized fish (table 1) was higher than the 100.4 ng/ml observed in previous work in low density and uncrowded Atlantic salmon (Skjervold et al 1999, Skjervold et al 2001.…”

Section: Discussionmentioning

confidence: 73%

Effects of crowding on blood constituents and flesh quality variables in Atlantic salmon (Salmo salar L.)

et al. 2010

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“…AI group had longer rigor time than AA group. It was consistent with the result of Skjervold et al (1999). In this study, jack mackerel fishes were wild-caught with fishing nets, in which the condition of pre-slaughter as stress, starvation and body temperature are difficult to control and measure, rigor was reported to take place within 6 h of catching.…”

Section: Rigor Mortis Analysissupporting

confidence: 87%

Effect of slaughter methods on the quality of Chilean jack mackerel (Trachurus murphyi) during refrigerated storage

et al. 2013

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The main objective of this study was to assess the influence of slaughter methods on the quality of Chilean jack mackerel (Trachurus murphyi) during refrigerated storage on board. Fishes were slaughtered by asphyxia in air (AA), asphyxia in ice water (AI) or stunning fish heads (SH), and the rigor mortis, pH, total volatile basic nitrogen (TVB-N), trimethylamine (TMA), 2-thiobarbituric acid reactive substances (TBARS) and sensory properties for the fishes were analyzed. On day 0, Chilean jack mackerel samples of AI group displayed higher pH values than those of AA and SH groups. TVB-N, TMA and TBARS values of all samples increased with the storage time, and these values of AI had a lower increase than AA and SH. Moreover, samples of AI had a better sensory score than AA and SH during storage. It can be concluded that slaughter method of asphyxia in ice water for Chilean jack mackerel exhibit the better efficiency on maintaining the fish quality during refrigerated storage on board.

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Rigor in Atlantic salmon as affected by crowding stress prior to chilling before slaughter

Cited by 79 publications

References 20 publications

Effects of commercial live transportation and preslaughter handling of Atlantic salmon on blood constituents

Effects of commercial live transportation and preslaughter handling of Atlantic salmon on blood constituents

Effects of crowding on blood constituents and flesh quality variables in Atlantic salmon (Salmo salar L.)

Effect of slaughter methods on the quality of Chilean jack mackerel (Trachurus murphyi) during refrigerated storage

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