Effects of dietary carbohydrate/lipid ratios on growth, body composition, and nutrient utilization of hybrid cat sh (Pseudoplatystoma reticulatum x Leiarius marmoratus)

Célio L Bernardes; Rodrigo D Navarro; Bartira Guerra Santos; Rodrigo Fortes Silva

doi:10.17533/udea.rccp.324965

Autores/as

Célio L Bernardes Universidade Unifenas
Rodrigo D Navarro Universidade de Brasília
Bartira Guerra Santos Universidade da Bahia
Rodrigo Fortes Silva Universidade do Recôncavo da Bahia

DOI:

https://doi.org/10.17533/udea.rccp.324965

Palabras clave:

consumo alimenticio, performance, utilización de alimento

Resumen

el cultivo del bagre híbrido es relativamente reciente en Brasil, con lo cual se hace necesario desarrollar dietas prácticas para este pez. Objetivo: evaluar la influencia de la relación carbohidratos/lípidos (CHO:L) en el crecimiento, composición corporal, y utilización de nutrientes por el bagre híbrido (Pseudoplatystoma reticulatum x Leiarius marmoratus). Métodos: cuatro dietas isonitrogenadas fueron formuladas con niveles incrementales de lípidos, utilizando la siguiente relación CHO/L: 1,3:1 (dieta 1); 1,1:1 (dieta 2); 0,9:1 (dieta 3), y 0,8:1 (dieta 4). Los peces fueron alimentados con 5% de BW/día (en base a peso seco), en triplicado con 6 peces/grupo (18 ± 1,5 g) por grupo, por un tiempo de 2 meses. Resultados: aunque el peso final y la ganancia de peso absoluto disminuyeron con el aumento de lípidos en la dieta (p < 0,05), no hubo diferencia significativa en el consumo diario de alimento entre los tratamientos (p > 0,05). Por otra parte, para el índice viscerosomático e índice hepatosomático no hubo diferencias estadísticas entre los tratamientos. Se ha observado el aumento de los lípidos corporales de peces alimentados con la dieta 4. La eficiencia de retención de lípidos y energética fueron mayores en el grupo 0,8:1 CHO:L. Conclusión: la relación CHO:L alrededor de 1,3:1 produce un gran beneficio al mejorar el crecimiento del modelo del pez híbrido estudiado.

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Biografía del autor/a

Célio L Bernardes, Universidade Unifenas

Departamento de Agronomia, Faculdade de Ciências Agrárias,CEP 37130-000 Alfenas, Minas Gerais

Citas

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