Coeficiente de Digestibilidad Aparente de Plantas Forrajeras Comunes en Zona Andina para Alimentación de Tilapia Nilótica (Oreochromis niloticus)

Abstract

Digestibility coefficients of crude protein, ether extract, neutral detergent fiber, acid detergent fiber, calcium, phosphorus, nitrogen free extract and gross energy are evaluated in: Tithonia diversifolia, Xanthosoma sagittifolium, Trichanthera gigantea and Gliricidia sepium, supplied to Oreochromis niloticus. The digestibility coefficients were calculated using the indirect method, replacing 30% of the reference diet by the plant material to be analyzed, using the 0.5% Cr2O3, and distributing the treatments in a randomized block design. The results obtained for different ranges of digestibility coefficients for crude protein were 89.94% - 98.66%; ether extract 87.73% - 98.79%; neutral detergent fiber 17.60% - 87.73%; Calcium 50.44% - 95.41%; phosphorus 72.21% - 93.75%; nitrogen-free extract 60.20% - 96.57%; gross energy 57.31% - 78.47%. In conclusion, Oreochromis efficiently digested forage plants, becoming an alternative supplemental ingredient for food in farming systems.