It is surprising, non-concept, not-understood-justified and contrary to this direction, BWG (g/bird) during finisher period (5-6 wks.) showed inconsistent figures and did not follow a definite trend as grower (3-5 wks.) and total period (0-6 wks.). The obtained results reflected the best figures by feeding diets containing (normal protein level and 1.5% CA) compared with those fed diets containing (normal protein level and without CA) and corresponding values were (451.81 versus 354.47 g) respectively.