Fitase em rações para tilápia-do-nilo na fase de crescimento
Carregando...
Data
2007-09-01
Autores
Bock, Claudio Luiz
Pezzato, Luiz Edivaldo [UNESP]
Cantelmo, Osmar Angelo
Barros, Margarida Maria [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
This research was carried out to compare the effect of phytase on performance, in the incorporation and excretion phosphorus in Nile tilápia. Four diets were used: one standard (contol), composed by 3,200 DE kcal ED/kg of ration and 30.0% CP and supplemented with phosphorus (4.0% of dicalcium phosphate), considering the treatment control, and others three, without phosphorus supplementation, with different phytase levels (1,000, 1,500, and 2,000 uf/kg), with four replication, per a period of 82 days. Circular tanks of fiber glass, with constant flow and aeration were used. The results demonstrated that the use of phytase in diets for fish production can reduce the levels of inorganic phosphorus in the diets and minimizing the impacts caused by phosphorus in the production system and in the natural environment and also can improve the productivity, increasing the amount of feed to be supplied and, consequently, facilitating the increase of biomass of fish to be used per production area. © 2007 Sociedade Brasileira de Zootecnia.
Descrição
Palavras-chave
Excretion, Fish, Growth, Oreochromis niloticus, Phosphorus, Pollution, Tilapia
Como citar
Revista Brasileira de Zootecnia, v. 36, n. 5 SUPPL., p. 1455-1461, 2007.