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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 28, No. 4, 2010, pp. 499-505
Bioline Code: zt10049
Full paper language: English
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 28, No. 4, 2010, pp. 499-505

 en Apparent digestibility of fishing waste silage in red tilapia ( Oreochromis mossambicus check for this species in other resources x Oreochromis niloticus check for this species in other resources )
Llanes, José E.; Bórquez, Aliro; Toledo, José & Lazo de la Vega, José M.

Abstract

By means of a design completely randomized with three repetitions, in vivo digestibility of nutrients and energy in fishing waste silages were determined for red tilapia ( Oreochromis mossambicus check for this species in other resources x Oreochromis niloticus check for this species in other resources ). Chemical silage prepared with sulphuric acid 98 % (20 ml/kg) and formic acid (10 ml/kg) and the biological with sugar cane molasses (150 g/kg) and of yogurt ( Lactobacilus bulgaris check for this species in other resources and Streptococcus acidophilus check for this species in other resources ; 30 g/kg). The chromic oxide was used as inert indicator and fecal sample were recollected by siphon from the bottom of tanks. As a result, the apparent digestibility of some nutrients differed from silage type; meanwhile protein was bigger for the chemical silage and the dry matter, calcium and phosphorus for the biological silage. Similar digestibility (P>0,05) was presented for lipids, ashes and energy. In conclusion, all this showed that the fishing waste silages present high nutritional value, that constitute an alternative- protein source in the formulation of rations for red tilapias.

Keywords
digestibility; silage; fishing waste; tilapia

 
 es Digestibilidad aparente de los ensilajes de residuos pesqueros en tilapias rojas ( Oreochromis mossambicus check for this species in other resources x Oreochromis niloticus check for this species in other resources )
Llanes, José E.; Bórquez, Aliro; Toledo, José & Lazo de la Vega, José M.

Resumen

Mediante un diseño completamente aleatorizado con tres repeticiones, se determinó la digestibilidad in vivo de nutrientes y energía de los ensilajes de residuos pesqueros en tilapias rojas ( Oreochromis mossambicus check for this species in other resources x Oreochromis niloticus check for this species in other resources ). El ensilaje químico se preparo con ácido sulfúrico 98% (20 ml/kg) y ácido fórmico (10 ml/kg) y el ensilaje biológico con miel de caña (150 g/kg) y yogurt ( Lactobacilus bulgaris check for this species in other resources y Streptococcus acidophilus check for this species in other resources ; 30 g/kg). Se usó oxido crómico como indicador y las heces se recolectaron por un sifón desde el fondo de los tanques. Se obtuvo que la digestibilidad aparente de algunos nutrientes difirió en función del tipo de ensilaje, entre tanto la proteína digestible fue mayor para el ensilaje químico y la materia seca, calcio y fósforo para el ensilaje biológico. Digestibilidades iguales (P>0,05) se presentó para los lípidos, cenizas y energía. Concluyendo que los ensilajes de residuos pesqueros presentan alto valor nutricional, lo que constituyen una fuente de proteína alternativa en la formulación de raciones para tilapias rojas.

Palabras-clave
digestibilidad; ensilaje; residuos pesqueros; tilapia

 
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