Effects of short‐term starvation periods on flesh quality in Arctic charr (Salvelinus alpinus) in different seasons

Possible effects of short‐term starvation on flesh quality in Arctic charr were studied in spring (March) and summer (August). Groups of juvenile Arctic charr (mean weight March 536 g ± 24; August 461 g ± 15 SEM) were starved for 1, 2 and 4 weeks (March) and 1, 2 and 3 (August). After each starvatio...

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Published inAquaculture research Vol. 51; no. 10; pp. 4022 - 4029
Main Authors Imsland, Albert Kjartan Dagbjartarson, Roth, Bjørn, Bach Christensen, Line, Siikavuopio, Sten Ivar, Foss, Atle
Format Journal Article
LanguageEnglish
Published Oxford Hindawi Limited 01.10.2020
Subjects
Arctic charr
Fish
flesh quality
food deprivation
Polar environments
Salvelinus alpinus
season
Spring
Spring (season)
Starvation
Summer
Texture
Arctic region
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Summary:Possible effects of short‐term starvation on flesh quality in Arctic charr were studied in spring (March) and summer (August). Groups of juvenile Arctic charr (mean weight March 536 g ± 24; August 461 g ± 15 SEM) were starved for 1, 2 and 4 weeks (March) and 1, 2 and 3 (August). After each starvation period, the fish were slaughtered, and flesh samples collected in order to investigate quality and textural properties in the different experimental groups. Starvation had a positive effect on flesh quality giving firmer texture and lower gaping scores. Starved fish had lower cathepsin activity at slaughter, and a similar difference was seen one‐week post mortem. The results showed that the effect of starvation period was seasonally dependent. Starvation had a larger effect in summer, where a three‐week starvation resulted in firmer texture, whereas this was not seen during spring.
Bibliography:Equal authorship between Imsland and Roth.
ISSN:1355-557X
1365-2109
DOI:10.1111/are.14745