Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)
AUTOR(ES)
Rocha, Cleber Bastos, Portelinha, Mauro Kaster, Fernandes, João Morato, Britto, Aline Conceição Pfaff de, Piedras, Sérgio Renato Noguez, Pouey, Juvêncio Luís Osório Fernandes
FONTE
R. Bras. Zootec.
DATA DE PUBLICAÇÃO
2014-02
RESUMO
To determine the available phosphorus requirement of pejerrey fish, four semi-purified diets were formulated to contain increasing available phosphorus levels (0.90, 2.7, 5.7 and 8.3 g/kg). Each diet was assigned to groups of 10 fish with average weight of 1.26±0.17 g, distributed into a completely randomized design with four treatments and four replications. Fish were fed at a rate of 10% total biomass four times a day for 60 days. The parameters productive performance, body chemical composition and mineral composition of bones and scales were evaluated. The best productive performance of fingerlings was obtained with the diet containing 4.3 g/kg available phosphorus. The average level of 6.3 g/kg available phosphorus promotes better mineralization of bones and scales in pejerrey fish.
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