The influence of season and levels of dietary lipid on growth performance and lipid composition in rainbow trout Parasalmo mykiss (Walbaum, 1792)
Olga Borisovna Vasilyeva1, Marina Sleksandrovna Nazarova2, Pauli Ripatti1, Nina Nikolaevna Nemova1
1Institute of Biology, Karelian Research Centre, RAS, 185910, Petrozavodsk, Pushkinskaya str., 11
2Vologda State University, 160035, Vologda, Leninа str., 15
Keywords: season, diet, liрid, fatty acids, growth performance, rainbow trout
Abstract
We studied the growth performance and liрid composition of liver, muscles and visceral fat in rainbow trout Parasalmo mykiss (Walbaum, 1792) and the diets used in its cultivation during the spring-summer season. The differences in dietary liрid composition determined modifications in the biochemical composition of tissues of rainbow trout and had an effect on the weight and growth rate of the fish. Trophic and seasonаl factors also had their influence on the studied parameters. The degree of influence depended on the functional characteristics of tissues and organs of rainbow trout.
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