The study was conducted to determine the effect of dietary supplemental tryptophan on the levels of blood biochemical parameters namely glucose, total cholesterol, total protein, albumin and globulin. A total of 350 White Leghorn layers of 18 weeks were allocated to seven experimental groups, each of which included 5 replicates and reared upto 45 weeks of age. Experimental diets consisted of two protein diets along with 5 supplemental levels of tryptophan. |