2009
DOI: 10.1590/s1516-35982009000600003
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Abstract: -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 ± 1°C), biological filter and stocking density of six fish/aquarium. Fish were fed ad libi… Show more

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Cited by 17 publications
(11 citation statements)
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“…Protein is an important source of both essential (EAAs) and nonessential (non‐EAAs) amino acids and plays a significant role in the optimum growth and physiological functions of animals including fish (Meyer & Fracalossi, ; National Research Council, ; Khan ). It is considered the most expensive and essential nutrient in animal feeds that directly affects animal performance (Martinez‐Palacios, Ríos‐Durán, Ambriz‐Cervantes, Jauncey, & Ross, ; Zuanon et al, ). A suitable level of dietary protein is essential for growth and enzymatic activities in all animals including fish (Arai, ; Ketola, ; Ogata, Arai, & Nose, ; Rumsey & Ketola, ; Zhang et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…Protein is an important source of both essential (EAAs) and nonessential (non‐EAAs) amino acids and plays a significant role in the optimum growth and physiological functions of animals including fish (Meyer & Fracalossi, ; National Research Council, ; Khan ). It is considered the most expensive and essential nutrient in animal feeds that directly affects animal performance (Martinez‐Palacios, Ríos‐Durán, Ambriz‐Cervantes, Jauncey, & Ross, ; Zuanon et al, ). A suitable level of dietary protein is essential for growth and enzymatic activities in all animals including fish (Arai, ; Ketola, ; Ogata, Arai, & Nose, ; Rumsey & Ketola, ; Zhang et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…Zuanon et al (2006) registram ganho de peso médio de 1,39 g, 1,78 g, 1,53 g e 1,53 g em níveis 34%, 38%, 42% e 46% de PB, respectivamente. Assim como observado por Zuanon et al (2009) que foi de 1,51 g, 1,57 g e 1,49 g para níveis de PB de 26, 30 e 34%. A variação em ganho de peso na mesma espécie pode ser influenciada por variações na densidade de peixes, a taxa e frequência na alimentação durante a fase de desenvolvimento do animal e a qualidade da proteína utilizada.…”
Section: Methodsunclassified
“…Some studies to determine the protein requirement for ornamental fish species may have overestimated the requirement because they did not consider the digestibility of ingredients (Chong et al, 2008), which may cause the results of productive performance to be nonviable. The protein level of the diet should be closely related to the ingredients used, according to their inclusion and the nutritional value of their amino acids (AAs) (Chong et al, 2008), as well as the balance of energy and other nutrients in the diet (Zuanon et al, 2009;Ribeiro et al, 2008).…”
Section: Introductionmentioning
confidence: 99%