Carbohydrates
Carbohydrates (starches and sugars) are the most economical
and inexpensive sources of energy for fish diets.
Although not essential, carbohydrates are included in aquaculture
diets to reduce feed costs and for their binding
activity during feed manufacturing. Dietary starches are
useful in the extrusion manufacture of floating feeds.
Cooking starch during the extrusion process makes it more
biologically available to fish.
In fish, carbohydrates are stored as glycogen that can be
mobilized to satisfy energy demands. They are a major
energy source for mammals, but are not used efficiently by