The effect of light intensity on the growth of Brachymystax lenok (Pallas, 1773)

摘要

A 35-day experiment was carried out to investigate the effect of light intensity on growth of Brachymystax lenok under different light intensities: 10, 70, 240 and 1000?lx. Fish(5.5?±?0.24?g)used in the experiment were fed to satiation twice a day (08:00?hours, 14:00?hours).The photoperiod was 12L:12D (08:00–20:00?hours). The specific growth rate(SGR) of B. lenok under lower intensities(10?lx,70?lx)was significantly higher than the other groups(P?