Layer bird      Broiler bird     i. Broilers  are reared mainly for meat. Layers  are reared solely for their eggs   ii. Broilers  are reared for a span of 42–56days and  are then marketed as live animals or slaughtered for meat. Layers  attain sexual maturity 18–22 weeks and lay eggs up to 72 weeks of age and then they are either moulted or sold as spent hens.   iii. Broilers  are reared commercially in deep litter system of housing, whereas it is preferred to rear layers  in caged housing systems.   iv. Ideally, broilers  are reared in batches in an all-in/all-out system in a single rearing shed. Whereas layers  are reared as per different growth stages in different sheds which are;   Chicks(0-8weeks), growers (9–22 weeks) and layers (23–72 weeks ).   READ ALSO...  Varieties of layers feed and stages to  supply  How to achieve larger egg size in layers