Protein evaluation of mixed diets. Comparative study in man and in the pig and rat of vegetable-animal and vegetable protein diets.
The procedure suggested by FAO/WHO to evaluate the protein quality of mixed diets has been tested using vegetable and vegetable-animal protein diets. Chemical scores were calculated and protein digestibilities were compared in human adult, growing pigs and rats. Pigs were studied as alternatives to rats in the protein evaluation of human diets. The results showed that the choice of the samples to calculate the chemical score is important; that the composition of the samples for biological evaluations must be considered in order to avoid experimental problems, and that values for true protein digestibility in human subjects, pigs and rats are in agreement, and further studies of growing pigs as an experimental model are suggested. Minor differences in protein quality of the two diets were demonstrated.
D000328:Adult; D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D004032:Diet / Q000592:standards*; D004044:Dietary Proteins / Q000378:metabolism / Q000592:standards*; D004063:Digestion; D002149:Energy Intake; D005260:Female; D005504:Food Analysis; D006128:Growth; D006801:Humans; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D014674:Plant Proteins, Dietary / Q000378:metabolism*; D051381:Rats; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013552:Swine
D000596:Amino Acids; D004044:Dietary Proteins; D014674:Plant Proteins, Dietary; D009584:Nitrogen