Conclusion
Most of the published studies with seaweeds as a component, an incorporation
level of 5–10% has been tested. The results of present study
indicate that incorporation of the GL in the diet at up to 15% level for
juvenile black sea bream is feasible based on the growth performance
and physiological state. This will reduce the consumption of fish meal
significantly, given the scale of culture of the black sea bream. Since
the non-starch polysaccharides of GL are the main anti-nutritional factors
for the fish, it remains to be determined if supplementing suitable
NSP enzymes into algae based diet could be an alternative way to
limit the negative influence of the algal fibre.