Data/hora: 09/06/2024 16:53:10

Provedor de dados: | 96
País: | Brazil
Título: | Saline water for juvenile giant trahira during feed training
Autores: | Salaro,Ana Lúcia; Campelo,Daniel Abreu Vasconcelos; Pontes,Marcelo Duarte; Tavares,Mateus Moraes; Zuanon,Jener Alexandre Sampaio; Luz,Ronald Kennedy.
Data: | 2012-06-01
Ano: | 2012
Palavras-chave: | Carnivorous fish; Formulated diet; Hoplias lacerdae; Salinity.
Resumo: | The objective of this study was to investigate the effect of different water salinities on juvenile Hoplias lacerdae during feed training. Salinity levels of 0, 3, 6 and 9 g salt L-1 were used. Juveniles (3.33±0.1 cm and 0.6±0.09 g) were stocked at a density of six fish L-1 in aquaria (10 L volume) with supplementary aeration. Weight gain, length gain, and rates of survival, mortality, and cannibalism were evaluated after 20 days. Total mortality was observed in 0 g of salt L-1. The best survival rates of 98.7 and 97.5% were recorded in 3 and 6 g of salt L-1, respectively. The greatest weight gain was recorded in fish grown in 3 g of salt L-1 followed by fish grown in 6 g of salt L-1. Length gain was similar in the 3 and 6 g salt L-1 groups. No weight or length gain was recorded in 9 g of salt L-1. According to regression equations, the optimum water salinity was 5.15, 4.03 and 4.55 g of salt L-1 for survival rate, weight, and length gain, respectively. Salinity between 4.03 and 5.15 g of salt L-1 during feed training of juvenile giant trahira improves productive performance.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600004
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982012000600004
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.41 n.6 2012
Fonte: | info:eu-repo/semantics/openAccess