Growth of Oreochromis aureus fed with diets containing graded levels of coffee pulp and reared in two culture systems
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| Autores: | , |
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| Formato: | artículo |
| Fecha de Publicación: | 2003 |
| Descripción: | A study was conducted to compare growth and feed utilization of Oreochromis aureus fed graded levels of coffee pulp (CoP) and reared in aquaria or in pens. Diets contained 0, 130, 260 and 390 g kg 1 of oven-dried CoP. In aquaria, fish receiving increasing dietary CoP levels (from 0 to 390 g kg 1) showed a progressive reduction in final body weight, growth rate and protein efficiency ratio (PER) ( P < 0.05). Feed conversion ratio (FCR) was significantly higher at 390 g kg 1 dietary CoP. Dietary CoP reduced digestibility of dietary dry matter and carbohydrate. In pens, CoP inclusions led to reduced final weight, growth rate and PER but to a much smaller extent than in aquaria. Fish fed the diet with 130 g kg 1 CoP had similar growth and feed utilization (PER and FCR) to those fed the control diet ( P>0.05). High dietary fibre levels together with the presence of antinutritional factors (ANFs) in CoP diets may explain why tilapia grew less and had lower feed utilization. Natural productivity of the pond could explain why results in pens were better than in aquaria. Results indicated that inclusion of CoP in tilapia diets might be limited to no more than 130 g kg 1 when fish are raised in earthen ponds and natural food is available. |
| País: | Repositorio UNA |
| Institución: | Universidad Nacional de Costa Rica |
| Repositorio: | Repositorio UNA |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:https://repositorio.una.ac.cr:11056/17577 |
| Acceso en línea: | http://hdl.handle.net/11056/17577 |
| Palabra clave: | TILAPIA AQUARIA OREOCHROMIS AUREUS COFFEE PULP NUTRICION ANIMAL ALIMENTACIÓN DE PECES PENS |