Cúrcuma (Curcuma longa) como pigmentante, promotor de crescimento e da saúde de acará bandeira (Pterophyllum scalare)
A pigmentação da pele dos peixes ornamentais é uma das principais características determinante do seu preço de mercado. Assim, a intensificação da pigmentação da pele com a adição de suplementos à dieta pode ser determinante na rentabilidade da produção. A Curcuma longa, por ser rica em pigmentos am...
|Nível de Acesso:||openAccess|
Universidade Federal de Viçosa
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|Citação:||MOREIRA, Diogo Magalhães da Veiga. Cúrcuma (Curcuma longa) como pigmentante, promotor de crescimento e da saúde de acará bandeira (Pterophyllum scalare). 2013. 34 f. Dissertação (Mestrado em Biologia Animal) - Universidade Federal de Viçosa, Viçosa. 2013.|
|Resumo inglês:||The skin pigmentation of ornamental fish is a major characteristic determinant of its market price. Thus, the increased skin pigmentation with the addition of supplements to the diet may be determining the profitability of production. Curcuma longa is rich in yellow-orange pigments and essential oils, thus, have the potential to be used as a color enhancer and growth and health promoter for ornamental fish. The angelfish (Pterophyllum scalare) is native to the Amazon that stands out for its peaceful coexistence with other species and peculiar body and fins shapes. The naja gold and gold marble strains show yellow- orange basic pattern of skin color, hence the supply of carotenoids or curcuminoids through feeding can increase their pigmentation. Thus, the aim of this study were to assess the potential of turmeric in diets for freshwater angelfish as skin pigmenting, growth and health promoting of gold marble and naja gold varieties and compare the effects of diet supplemented with standard source of pigment to the other diets. For this, a randomized block design in a factorial scheme (2 x 6) was used. Each treatment was divided into two blocks with two replications within each block. Six diets supplemented with different sources of pigments and two strains of angelfish (naja gold and gold marble) were evaluated. Six isonitrogenous and isocaloric practices diets were made: T1 - positive control (diet supplemented with canthaxanthin) , T2 - negative control (diet without supplemented pigments) , T3 - T6 diets supplemented with 0.5, 17.0, 33.5 and 50,0 g/kg turmeric, respectively. Productive performance, skin coloration in three body points (dorse and dorsal fin base for both strains, body side of naja gold strain and the caudal fin base of the gold marble strain), blood glucose, liver and muscle glycogen and oxidative stress responses were evaluated. A quadratic effect of turmeric supplementation over feed conversion ratio, final weight, weight gain and specific growth rate was observed. A quadratic effect of turmeric supplementation over color indexes of magenta and black on fish dorse and magenta and yellow on dorsal fin base was observed, while the color index cyan on dorsal fin base increased linearly. In the caudal fin base of the gold marble strain a linear effect of supplementation of turmeric on the magenta color index was observed. For muscle catalase a linear effect of supplementation of turmeric was observed. Thus, it can be concluded that Curcuma longa improves health and influences the growth and skin pigmentation of juvenile angelfish and may improve or impair the growth and pigmentation, according to its concentration in the feed and variety of fish.|