Intensificação da coloração em peixes ornamentais com uso de rações enriquecidas com pigmentos naturais

• Autor(a) principal: Rezende, Fabrício Pereira
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/1756
• topic: Pigmentos naturais; Peixe ornamental; Colisa lalia; Natural pigments; Ornamental fish; Colisa lalia; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PRODUCAO ANIMAL

The recent expression of ornamental fish farming production as an agriculture activity demands for fish farmers to make use of best management practices in the production, in order to produce ornamental fish with greater vigor, pigmentation of skin and sanity, to meet the demands of an increasingly demanding market. The wide variety and intensity of colors in fish integuments depends on the presence of chromatophores containing pigments such as melanin, carotenoids, pteridines and purines. In Brazil, ornamental fish are feed with rations for species bounded for consume, poor in natural pigments, that fact, combined with low production of planktonic organisms in intensive and superintensive farming systems, prevents the accumulation of pigments in sufficient levels for intensification of skin coloration in fish intended for marketing. Intenting to improve the quality of fish intended to consumers, researchers and fish farmers add natural pigments in the diet to enhance the coloration of fish reared at high densities. The use of natural pigments in fish feeding features many functions, including antioxidant activity, increasing the immune system response, improving aspects of growth and reproduction, as well as the intensification of skin coloration. Aiming to evaluate the effect of different ingredients sources of natural pigments in the skin pigmentation of fish and their possible effects on the performance characteristics, it was conducted six experiments in completely randomized design. It was evaluated the ingredients - açai freeze-dried extract, annatto oily extract, tomato dried extract and canthaxanthin - as additives in feed for ornamental fish, discus and dwarf-red gouramy, making it possible to observe that all the ingredients tested alter the color expression of the fish skin, without interfering with the performance characteristics for fish kept in a controlled environment.