Revista de Investigaciones Veterinarias del Perú
ISSN 1609-9117 versión impresa
SILVA S, Walter, ARBAIZA F, Teresa, CARCELEN C, Fernando et al. Evaluación Biológica en ratas de Laboratorio (Rattus norvegicus) de Fuentes Proteicas usadas en alimentos comerciales para perros. Rev. investig. vet. Perú, ene./jun. 2003, vol.14, no.1, p.18-23. ISSN 1609-9117.
The aim of this study was to biologically assess three protein sources used in commercial dog food: soy meal (TS), meat meal (HC), and chicken meal (HP) using four biological tests: Protein Efficiency Ratio (PER), True Digestibility (DV), Net Protein Utilization (NPU) and Biological Value (VB). 40 albino laboratory rats of 23 days of age were used. Five groups were formed according to the protein source: groups TS, HC, HP, control group (sodium caseinate) and a non protein-group. The results were: PER: TS = 1.86, HC = 1.39, HP = 1.69, control = 2.11; DV: TS = 98.76, HC = 96.95, HP = 98.13, control = 99.19; NPU: TS = 58.19, HC = 35.52, HP = 60.19, control = 96.46; VB: TS = 0.59, HC = 0.37, HP = 0.61, control = 0.97. PER results in the HC group were significantly lower than other groups (p<0.05). There was not statistical differences on PER between groups HP and TS. All protein sources had a high true digestibility. The HC was the protein source of less quality because the lowest PER, NPU and VB values. It is concluded that to asses the quality of protein nutrients is not enough to establish the protein content and digestibility, but to conduct biological tests.
Palabras llave: soy meal; meat meal; chicken meal; PER; NPU; digestibility; biological value; rats.
Universidad Nacional Mayor de San Marcos
Facultad de Medicina Veterinaria
Av. Circunvalación Cdra. 28 s/n - San Borja
Apartado 03-5137 - Lima - Perú
Telf.: (511) 435-3348 anexo 236
Fax: (511) 6197000 anexo 5017