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Article . 2012 . Peer-reviewed
License: CC BY NC
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Panulirus argus postlarva performance fed with fresh squid

Authors: Rodríguez-Viera, L.; Perera, E.;

Panulirus argus postlarva performance fed with fresh squid

Abstract

En la actualidad existe gran interés en la engorda de langostas espinosas a partir de postlarvas capturadas en el medio natural. Esta actividad acuícola se ha desarrollado vertiginosamente en Asia y sustenta una industria millonaria sobre todo en Vietnam. El principal impedimento para la expansión sostenible de este tipo de acuicultura a otras regiones es la ausencia de dietas formuladas adecuadas que proporcionen altas tasas de crecimiento. Los mejores crecimientos con piensos hasta la fecha se han logrado con la inclusión de grandes cantidades de harina de krill y/o hidrolizados de krill, ingredientes de elevado costo. Sin embargo, actualmente se evita el uso de harina de calamar en dietas experimentales para langostas debido a reportes de baja digestibilidad. También se ha demostrado que el calamar fresco produce bajos crecimientos en algunas langostas de aguas templadas, pero no existen reportes de crecimiento de P. argus alimentadas exclusivamente con calamar. En el presente trabajo se estudió el efecto del calamar fresco sobre el crecimiento de postlarvas de P. argus (peso inicial=1.8 ± 0.46 g, largo de cefalotórax inicial=10.62±1.576 mm). El experimento tuvo una duración de 60 días. Las postlarvas alimentadas con calamar alcanzaron pesos finales 4 veces superiores a las que fueron alimentadas con pienso de pescado. Los incrementos de peso, talla y la tasa de crecimiento específica también resultaron superiores con calamar fresco y fueron similares a los mejores crecimientos reportados en la literatura para P. argus y otras especies. Los resultados indican que a diferencia de lo reportado anteriormente para langostas espinosas, el calamar fresco es un alimento apropiado para P. argus. Se sugiere que se debe mejorar los procedimientos de obtención de las harinas de calamar, con el objetivo de mejorar su digestibilidad para langostas espinosas.

There is a great interest in the growout of spiny lobster postlarva captured in the wild. This activity has been developed rapidly in Asia and especially in Vietnam. However, lack of appropriated formulated diets remains the main constrain to the sustainable expansion of this activity worldwide. Until now, best growth rates have been obtained with the use of high inclusion of krill meal and/or krill hydrolysates which are expensive. However, squid is today avoided as food ingredient due to low digestibility reported. Also, fresh squid has been demonstrated to produce poor growth performance in temperate lobsters, but there is no report for P. argus fed exclusive on fresh squid. This work examines the effect of fresh squid on growth of P. argus (initial weight=1.8 ± 0.46g, initial cephalotorax length=10.62 ± 1.576 mm) during 60 days. Lobsters fed with fresh squid attained a final weight 4 times higher that the lobsters fed on fish dry pellets. Weight and size increments, as well as specific growth rates were higher for lobster fed with squid, and resulted similar to the better growth rates previously reported for P. argus and other lobsters. Results indicate that in spite of previous negative reports for spiny lobsters, fresh squid is an appropriated food for P. argus. It is suggested that processing technology should be improved for obtaining more soluble and digestible squid meals for lobsters.

Panulirus argus

Spiny lobster

Unpublished

Keywords

Growth rate, Squid culture, Diets

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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