In part 5 that is final part of this study was undertaken to investigate the
effects of various dietary carotenoid source on the growth, skin pigmentation and
immune response in fancy carp for a rearing period of six weeks. In this study, neither
growth nor feed conversion efficiency were affected significantly by dietary treatment
for all treatments diets. Growth parameters, namely weight gain, feed conversion ratio
and survival were similar. Fish were fed with tea leaves had the highest serum TC,
astaxanthin and lutein concentration better than the other group. Tea leaves
supplementation of fancy carp diets are an efficient way to improve the carp skin
pigmentation. Furthermore, pigmentation effects were retained after their
discontinuation feeding with dietary carotenoid. Therefore, diets supplemented with a
tea leaves is able to efficiently utilize dietary natural, and deposit astaxanthin to
acquire an acceptable dark red skin. Besides, carotenoids are important to animal
health by enhancing immunity because of fish were fed with carotenoids diets had the
highest phagocytic rate and index better than the control group. Hence, replacing raw
material of tea leaves in fancy carp diet should be more efficient and cost-effective
carotenoid formulation.