Determination of physiological casein and wheat gluten protein requirements of adult rats aged 75-89 days.
Mounting doses of casein and wheat gluten protein (from 0% to 40% in the diet) were given to adult male rats aged 75-89 days for 14 days. The optimum physiological daily dose, determined from changes in body nitrogen, body water and body weight, was 2.76 g/d for casein protein (corresponding to a 10% casein protein diet) and 3.67 g/d for wheat gluten protein (corresponding to a 15% gluten protein diet). Determined from body weight changes, the daily maintaining dose of casein or wheat gluten protein was 1.054 and 1.511 mg/d respectively, from body nitrogen changes 970 and 1.514 mg/d and from body water changes 1.124 and 1.637 mg/d. Compared with newly weaned animals aged 35-49 days, the optimum physiological daily dietary protein doses for adult animals fall, while the maintaining doses rise.
Dibák
O
O
Krajcovicová
M
M
Grancicová
E
E
Kopec
Z
Z
D000818:Animals; D001835:Body Weight; D002364:Caseins / Q000008:administration & dosage*; D004044:Dietary Proteins / Q000008:administration & dosage*; D005983:Glutens / Q000008:administration & dosage*; D008297:Male; D009584:Nitrogen / Q000378:metabolism; D009751:Nutritional Requirements; D051381:Rats; D011919:Rats, Inbred Strains
D002364:Caseins; D004044:Dietary Proteins; D005983:Glutens; D009584:Nitrogen