Bushra Badhaso

1. INTRODUCTIONThe world poultry population has been estimated to be about 16.2 billion, with 71.6 % in developing countries, producing 67, 718,544 metric tons of chicken meat and 57,861,747 metric tons of hen eggs (Gueye, 2005).  In  Africa,  village  poultry  contributes  over  70%  of  poultry  products  and  20%  of  animal& ...