Dietary phosphorus requirement of pejerrey fingerlings (Odontesthes bonariensis)

Revista Brasileira de Zootecnia

Cleber Bastos Rocha¹  Mauro Kaster Portelinha¹  João Morato Fernandes¹  Aline Conceição Pfaff De Britto¹  Sérgio Renato Noguez Piedras¹  Juvêncio Luís Osório Fernandes Pouey¹ 

[1] ,Universidade Federal de Pelotas Departamento de Zootecnia Programa de Pós-Graduação em ZootecniaPelotas RS ,Brasil

关键词: bone;    fish;    food;    growth;    mineral;    nutrition;   

DOI  :  10.1590/S1516-35982014000200001

来源: SciELO

【 摘 要 】

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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