Dietary protein and energy effects on reproductive characteristics of commercial egg-type pullets reared in arid hot climate

Abstract A feeding trial with 10-week-old egg-type commercial pullets was carried out. Nine diets (3 × 3 factorial) were tested, with three protein levels (13, 15 and 17%) and three energy levels (10, 11 and 12 MJ kg −1 ). From the results it appears that a diet containing 15% protein and supplying 10 MJ kg −1 energy is best for optimal growth and for minimization of the number of days required to reach the point of lay, and the age at 25% and 50% egg production.