M. Lorentzen et al., EFFECTS OF DIETARY SELENITE OR SELENOMETHIONINE ON TISSUE SELENIUM LEVELS OF ATLANTIC SALMON (SALMO-SALAR), Aquaculture, 121(4), 1994, pp. 359-367
A feeding experiment was carried out to compare the effects of supplem
enting a fish meal based diet with selenium as selenite or selenomethi
onine on Atlantic salmon. Five duplicate groups of Atlantic salmon par
r (mean weight 4.5 g) were given a basal diet either unsupplemented or
supplemented with 1 and 2 mg Se/kg as selenite or selenomethionine re
spectively, for 8 weeks. Weight gains were similar in all groups. Sele
nium concentrations in the liver were highest in the groups given sele
nite whereas muscle and whole-body selenium concentrations were highes
t in the groups given selenomethionine. Only a minor increase in muscl
e selenium concentration was observed by supplementing selenite. There
were no significant differences in activity of the selenium-containin
g enzyme, glutathione peroxidase, between the dietary groups, indicati
ng a sufficient selenium status in all groups.