Dietary protein and energy requirements of juvenile freshwater angelfish

Revista Brasileira de Zootecnia

Jener Alexandre Sampaio Zuanon²  Ana Lúcia Salaro²  Sofia Simões Silveira Moraes¹  Leandro Moreno De Oliveira Alves¹  Eric Márcio Balbino¹  Erick Siqueira Araújo¹ 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Animal Viçosa MG ,Brasil

关键词: growth;    ornamental fish;    productive performance;    protein;    Pterophyllum scalare;    crescimento;    desempenho produtivo;    peixes ornamentais;    Pterophyllum scalare;    relação proteína;   

DOI  :  10.1590/S1516-35982009000600003

来源: SciELO

【 摘 要 】

Dietary protein and energy requirements of juvenile freshwater angelfish (Pterophyllum scalare) were evaluated. A 3 × 2 factorial design was used, with three dietary crude protein levels being tested (26, 30, and 34% of CP) combined with two digestible energy levels (3,100 and 3,300 kcal DE/kg of diet) in three replicates. Juveniles averaging 2.33 ± 0.26 g were reared in a 25L-aquarium with controlled temperature (26 ± 1ºC), biological filter and stocking density of six fish/aquarium. Fish were fed ad libitum at 09:00 a.m., 2:00 p.m. and 4:30 p.m. The following performance parameters were evaluated: final weight, final length, weight gain, feed intake, feed conversion ratio, specific growth rate, protein efficiency ratio and condition factor. Fish fed diets with 26% CP showed greater protein efficiency values when compared to those fed diets with 34% CP. Diets with 26% of CP and 3100 kcal DE/kg could meet the nutritional requirements of juvenile freshwater angelfish.

【 授权许可】

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