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Quality of raw and smoked fillets from clinically healthy Atlantic salmon, Salmo salar L., following an outbreak of pancreas disease ( PD )
Author(s) -
Taksdal T,
WiikNielsen J,
Birkeland S,
Dalgaard P,
Mørkøre T
Publication year - 2012
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.2012.01428.x
Subject(s) - salmo , fillet (mechanics) , fish fillet , biology , pancreas , outbreak , fishery , population , food science , fish <actinopterygii> , endocrinology , medicine , virology , materials science , environmental health , composite material
Pancreas disease ( PD ) is a viral disease of farmed salmonid fish, which causes huge economic losses. Pathological changes in skeletal muscle, pancreas and heart are hallmarks of PD . Stakeholders in the fish‐smoking industry have claimed that fillets from PD ‐affected Atlantic salmon, Salmo salar L., are of poor quality. We therefore examined harvest‐ready, clinically healthy Atlantic salmon from a population of fish previously affected by PD . Histopathological changes in skeletal muscle tissues ranged from minor to severe. Fillet quality measurements showed that fish with severe skeletal muscle changes provided a paler raw fillet and a yellowish and harder cold‐smoked fillet than normal. PD had no significant effect on fillet gaping, bacteriological quality or off‐odour development during storage. An unexpected finding was a significant subendocardial fibrosis in 23% of the PD ‐affected fish. The latter may indicate susceptibility to stress‐related heart failure.