The aim of this study was to compare the in vivo apparent protein digestibility method in rats and the in vitro pepsin digestibility method as well as their level of correlation. Three protein sources used in commercial dog foods (soybean meal, meat meal, and chicken meal), three commercial adult dog foods (A1, A2, and A3), three commercial puppy foods (C1, C2, and C3), and sodium caseinate as a control group were evaluated. For the in vivo assay, 60 twenty-three-day-old albino laboratory rats (Rattus norvegicus) were used and for the in vitro method the standardized pepsin method used at the Nutrition Laboratory, Faculty of Veterinary Medicine, UNMSM was evaluated. The correlation coefficient between the in vivo and in vitro methods was 0.94, whereas the in vitro digestibility was statistically higher than the in vivo digestibility (p<0.05). The regression equation was Y, in vivo = 11.037 + 0.804 (X, in vitro). It was concluded that there is a high correlation between both protein digestibilitymethods when assessing protein sources and commercial dog foods.
|Translated title of the contribution||Comparison of two techniques to determine the protein digestibility of commercial foods and supplies for dogs|
|Number of pages||8|
|Journal||Revista de Investigaciones Veterinarias del Peru|
|State||Published - 2006|
Bibliographical noteFunding Information:
La digestibilidad in vivo de la torta de soya estuvo dentro del rango de los valores reportados en alimentos para perros (Kendall y Holme, 1982, citado por National Research Council, 1985). Los resultados de digesti-bilidad proteica in vivo de las muestras de alimentos comerciales hallados en el presen-te estudio, fueron similares a los reportados en la literatura en alimentos para perros (Quezada, 1988; Saavedra, 1996).