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Hidrobiológica
versión impresa ISSN 0188-8897
Resumen
HERNANDEZ, Crisantema et al. Effect of soybean and tuna gonad in the diet of juvenile bullseye puffer fish Sphoeroides annulatus. Hidrobiológica [online]. 2013, vol.23, n.3, pp.320-327. ISSN 0188-8897.
The purpose of this study was to evaluate the utilization of different protein ingredients in practical diets for juvenile of bulleseye puffer fish Sphoeroides annulatus. A feeding and subsequent digestibility in vivo experiments were carried out to evaluate the effect of using tuna gonad (TG), extruded soybean meal (SBMe), and solvent extracted soybean meal (SBM), as complementary protein sources to fishmeal (FM), in practical diets for puffer fish. Four diets were formulated (50.0% crude protein, 9% crude lipid and 20.1 kJ g-1 energy), the control diet (CRL) was elaborated with fishmeal and tuna gonad, the second diet (SBMe) fishmeal and extruded soybean meal, the third diet (TG-SBM) included FM, tuna gonad and soybean meal, the fourth diet (SBM) fishmeal and soybean meal; a fifth diet, a commercial marine fish feed was used as a reference (REF). The response of juvenile fish (mean initial wt ± SD, 40.5 ± 1.3 g) to experimental diets and REF feed was evaluated by measuring weight gain, specific growth rate (TCE), protein efficiency ratios (PER) and feed convertion ratios (FCR) over a 70 days period. Fish fed TG-SBM diet revealed a better growth performance, however this combination of ingredients was no significantly different to the other experimental diets (p > 0.05). The fish fed REF feed showed a lower growth performance than the four experimental diets (p < 0.05). SBM and TG were digestible ingredients that were used to replace and, therefore, reduce the level of inclusion of fishmeal in the diet of bullseye puffer fish.
Palabras llave : Digestibility; growth; protein source; soybean meal; tuna gonad.