Abstract
Albino rats weighing 40 to 60 grams were maintained on the following diets: 1, low lysine basal diet containing corn meal 76, wheat gluten 20, sodium chloride 1, calcium carbonate 3, and a vitamin mixture; 2, basal diet plus D-lysine hydrochloride 0.5%; 3, “plus L-lysine hydrochloride 0.5%. 4, ” plus DL-lysine hydrochloride 1.0%. The samples of lysine used here were synthetic products derived from r-caprolactam.
The addition of L-lysine stimulated the growth, and of DL-lysine in somewhat less extent. Some of the animals in the D-lysine group were dead after sudeen less of weight, but it could not be attributed to the deleterious effect of the D-compound.
Feeding of DL-lysine over long period caused slight pathological changes in liver and kidney.
