As main conclusions of this work, one can say that a dietary supplementation
of 25 mg/kg of tea leaves for 6 weeks tends to increase skin pigmentation and have a
profound influence on immune response of fancy. In the diet is good enough to obtain
a natural pigmentation in fancy carp. However, a minimum dose of synthetic
carotenoid and crude carotenoid extraction should be used to obtain a desirable for
improving skin coloring, their are much more expensive than raw materials of plant
leaves that is a by-product from agriculture harvested. Thus, tea leaves is suggested to
be an effective alternative natural carotenoid source to synthetic carotenoid for fancy
carp pigmentation and boots immune response including using plant leaves could be
reducing costs related to pellet production which will therefore promote increased
profit for fish farmers.