Parameters of Lipid Metabolism in Underyearlings of the Atlantic Salmon Salmo salar Reared under Different Regimes of the Photoperiod and Feeding Modes in Aquaculture in the Southern Region of Russia.

Murzina, S. A.; Provotorov, D. S.; Voronin, V. P.; Kuznetsova, M. V.; Kuritsyn, A. E.; Nemova, N. N.

A comparative study of the lipid and fatty acid composition of Atlantic salmon underyearlings reared under natural and continuous light in commercial aquaculture in the summer–autumn period in North Ossetia–Alania was carried out. The change in the main indicators of lipid metabolism in salmon underyearlings from September to November was found to have a stable trend aimed at preparing juveniles for smoltification. A change in key fatty acid indicators was detected: an increase in the content of PUFAs due to (n-3)PUFAs, and the "marine" type of PUFA due to 22:6(n-3), high values of the ratios (n-3)/(n-6) PUFA, 18:3(n-3)/18:2(n-6), 22:6(n-3)/18:3(n-3). This study has shown the stimulating effect of the combined and stable action of the continuous photoperiod and feeding in the summer–autumn period in the preparation for smoltification of Atlantic salmon fingerlings grown under aquaculture conditions.

NORTH Ossetia (Russia); RUSSIA; ATLANTIC salmon; LIPID metabolism; AQUACULTURE; SMOLTING; FATTY acids; LIPIDS

Biology Bulletin, 2023, Vol 50, Issue 2, p121

1062-3590

Academic Journal

10.1134/S1062359022700121