Stocking density in the larviculture of Nile tilapia in saline water

Revista Brasileira de Zootecnia

Ronald Kennedy Luz¹  Walisson De Souza E Silva¹  Reinaldo Melillo Filho¹  André Eduardo Heringer Santos¹  Lucas Alves Rodrigues¹  Rodrigo Takata¹  Érika Ramos De Alvarenga¹  Eduardo Maldonado Turra¹ 

[1] ,Universidade Federal de Minas Gerais Escola de Veterinária Laboratório de AquaculturaBelo Horizonte MG ,Brazil

关键词: intensive larviculture;    Oreochromis niloticus;    water quality;    water salinity;   

DOI  :  10.1590/S1516-35982012001200001

来源: SciELO

【 摘 要 】

The objective of this study was to assess the possibility of increasing the stocking density in the larviculture of Nile tilapia, Oreochromis niloticus, in saline water. Six-day post-hatched larvae (average weight of 0.09±0.002 g), at the start of the exogenous feeding, were stocked in twelve 8 L tanks at densities of 1, 10, 20 and 30 larvae/L. The larvae were fed a diet consisting of 40% crude protein five times per day. During larviculture, water was kept at a salinity of 2 g of common salt/L. At the end of the 28-day experiment, the survival rate, length, weight, temperature, water salinity and conductivity were not affected by the different treatments. The dissolved oxygen and pH, however, decreased as density increased, whereas total ammonia concentration, turbidity and biomass showed a direct relationship with the increase of stocking density. Consequently, the present study shows for the first time that the larviculture of Nile tilapia is possible with up to 30 larvae/L in water with 2 g of salt/L.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License