Arch. Pol. Fish.     Vol. 7     Fasc. 2            1999      p. 237-243

FAT LEVEL IN BODY OF JUVENILE ATLANTIC SALMON (SALMO SALAR L.), AND SEA TROUT (SALMO TRUTTA M. TRUTTA L.), AND METHOD OF ESTIMATION FROM MORPHOMETRIC DATA

Piotr Dębowski*, Stefan Dobosz*, Stanisław Robak*, Zygmunt Usydus**

*The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn
**Marine Fisheries Institute in Gdynia

ABSTRACT. Average fat levels in one and two years old sea trout (Salmo trutta m. trutta L.) and two years old Atlantic salmon (S. salar L.) measured in May were similar, about 9% of fresh weight. One year old salmon showed higher fat content – about 11%. Fat level and fish measurements: body length, weight, and depth correlated, and so did fat level and morphometric data. Equations of multiple regression explained 66-99% of fat content variation.

Key words: SALMON, SEA TROUT, ESTIMATION OF FAT LEVEL