Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/14593
Tipo: Artigo
Título: Saline water for juvenile giant trahira during feed training
Autor(es): Salaro, Ana Lúcia
Campelo, Daniel Abreu Vasconcelos
Pontes, Marcelo Duarte
Tavares, Mateus Moraes
Zuanon, Jener Alexandre Sampaio
Luz, Ronald Kennedy
Abstract: 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.
Palavras-chave: Carnivorous fish
Formulated diet
Hoplias lacerdae
Salinity
Editor: Revista Brasileira de Zootecnia
Tipo de Acesso: Open Access
URI: http://dx.doi.org/10.1590/S1516-35982012000600004
http://www.locus.ufv.br/handle/123456789/14593
Data do documento: 13-Dez-2011
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