Apparent digestibility of dry matter, organic matter, protein and energy of native Peruvian feedstuffs in juvenile rainbow trout (Oncorhynchus mykiss)

Trout production is a growing activity in recent years but requires new alternative sources of feed to be sustainable over time. The objective of this research was to determine the apparent digestibility coefficient (ADC) of dry matter (DM), organic matter (OM), crude protein (CP) and digestible energy (DE) of kañiwa (Chenopodium pallidicaule Aellen), kiwicha (Amaranthus caudatus L), quinoa (Chenopodium quinoa Willd), beans (Phaseolus vulgaris L.), sacha inchi, (Plukenetia volubilis L) and jumbo squid (Dosidicus gigas) meal in juvenile rainbow trout. The experimental diets were composed of a 70% basal diet and 30% of any raw materials. The ADC was determined by the indirect method using insoluble ash as a non-digestible marker. Jumbo squid, sacha inchi and quinoa showed the highest values of ADC (%) of DM (84.5, 73.5 and 69.7), OM (89.1, 78.4 and 72.9), CP (93.2, 98.0 and 90.3), and DE (4.57, 4.15 and 2.95 Mcal/kg DM), respectively. The ADC values for kañiwa, kiwicha and bean were significantly lower. In conclusion, quinoa meal and jumbo squid meal have an acceptable digestibility but sacha inchi meal is a potential alternative for rainbow trout feeding in the future.

Instituto de Patobiología

Fil: Ortiz Chura, Abimael. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Fil: Pari Puma, Ruth Milagro. Universidad Nacional del Altiplano. Facultad de Medicina Veterinaria y Zootecnia; Perú

Fil: Rodríguez Huanca, Francisco Halley. Universidad Nacional del Altiplano. Facultad de Medicina Veterinaria y Zootecnia; Perú

Fil: Ceron Cucchi, Maria Esperanza. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patobiologia; Argentina

Fil: Araníbar Araníbar, Marcelino Jorge. Universidad Nacional del Altiplano. Facultad de Medicina Veterinaria y Zootecnia; Perú