We conclude that dietary electrolyte balance plays a key role in homeostasis and maintaining performance in low CP amino acids fortified diets. By reducing CP and supplying entirely all essential amino acid requirements, the amount of uric acid production decreases to its minimum level and surplus positive electrolyte ions lose one of the most important ways of their excretion namely physical trapping by uric acid molecule. Therefore, it seems that the optimum dietary electrolyte balance varies with dietary CP level. In conclusion, in order to maintain performance and blood electrolytes homeostasis in broiler chicks fed low CP amino acids-supplemented diets, electrolyte balance should be decreased in parallel with decline in nitrogen intake.