Requerimientos nutricionales en juveniles de Anguila (Anguilla rostrata): Evaluación de relaciones proteína/energía en la dieta
Protein and the energy of the food are important for the growth and nutritional composition of the eel meat. These factors of the food can also affect ammonia excretion that has a marked interest in aquaculture and in the environmental impact. A completely randomized experimental design was developed during 60 days at laboratory scale, to evaluate the effect of different protein/energy ratios (P/E) on growth, oxygen consumption ratios and ammonia production of eel juvenile (Anguilla rostrata) with 0.63 ± 0.02 g of initial weight. An interaction of first grade was evidenced between protein levels and energy of the diets. The eels require growing diets containing protein levels between 45 and 55% and P/E ratios from 27.4 to 29.6 g of protein/Mj. The robustness grade (Factor K) of the fish were superior for the biggest levels of protein and it was find high correlation (r=0.93) among the fatty deposition in eel muscle and the content of lipids in diets, independently of the energy contribution of the same ones. The survival was high for all the treatments (86-100%) and food conversion ratios (FCR) varied from 1.52 to 3.64. These results demonstrate one narrow relationship among binomial P/E and capacity of eels to move away the proteins to energy.
| Main Authors: | , , |
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| Format: | Proceedings Paper biblioteca |
| Language: | Spanish / Castilian |
| Published: |
CIVA
2003
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| Subjects: | Food consumption, Fish culture, Diets, |
| Online Access: | http://hdl.handle.net/1834/1954 |
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