Abstract:
Ctenopharyngodon idella species was fed with
aquatic vegetation. Groups E1, and E1(r)
achieved higher weight increases in
comparison with the fish belonging to the control group, fed with mixed
fodder. At E1 and E1(r ), the mean daily increase was of 3.1 g and at the
control group, of 2.9 g. At E1, the index of aquatic vegetation consumption
was of 28.8, respectively, 28.3 in E1(r). The consumption index for mixed
fodder was of 5.27 at the control group, a great value if we take into
account the value of the consumption index of 2, quoted by the specialty
literature. At E2, fishes, which were fed with mixed fodder and aquatic
vegetation, obtained a mean daily increase of 3.2 g, greater than the
increase of 2.9 g at the control and 3.1 g at E1 and E1(r). Therefore,
Ctenopharyngodon idella consumed and capitalized well the aquatic
vegetation due to some specific features of the digestive system, preferring
the mixed fodder, when the aquatic vegetation was insufficient.
