Figure 1

Growth of groups of young male rats. The Wistar group (n = 3) started with weight-matched individuals which were fed the maintenance diet. Sprague-Dawley (SD) groups (similar littermates, n = 3 or 4) were fed either a maintenance diet (14% protein) or a high protein (21%) formulation. Error bars for the SD high protein diet group have been omitted to avoid visual confusion in the graphic; the high protein diet appeared to promote a lower growth rate, evident after about 60 days of age (~250 g).