The effects of a tryptophan- and protein-deficient diet upon growth in rats

The effects of exposure to a protein-and tryptophan-deficient diet upon taste-aversion learning

“…However, the weight gains shown by the Grits subjects following the switch to the regular diet indicated that this differential is reversible. The latter result also corroborates the Becker et al (1989) report.…”

“…First, the weight differential that developed between the two groups during the grits-exposure phase corroborate the Remley et al (1980) and Becker et al (1989) reports. Clearly, the protein-and tryptophan-deficient grits diet suppressed growth and weight gain significantly.…”

“…fect in grits-exposed rats by 75 days of age, and (2) even more dramatic effects were produced by placing nursing dams on the experimental diet coincident with the birth of the pups, Becker, Davis, Grover, and Erickson (1989) extended the Remley et al (1980) data. Without question, the protein-and tryptophan-deficient grits diet produces animals that, at maturity, differ significantly from normally reared littermates.…”

“…In the present study, the experimental diet was administered from weaning (21 days) until maturity (71 days). Had the exposure been started earlier, the possibility of mortality would have to be dealt with (see Becker et al, 1989). Hence, the only viable possibility would be to maintain the animals on the grits diet for a longer period of time.…”

“…For example, Becker et al (1989) reported increasing weight gains for rats shifted from the grits diet to normal laboratory chow at 75 days of age. At this point, the normal males weighed 4.63 times more than the gritsfed males, and the normal females weighed 3.16 times more than the grits-fed females .…”