Effects of Utilizing Disposed Fish of White Nile River on Performance of Layers', Gezira, Sudan

An experiment has been performed to utilize the wasted and disposed fish from White Nile River after simple heat treatments (Sun drying, roasting, direct boiling and indirect boiling) in layers’ rations from 19 up to 40 weeks to replace the imported concentrate with the levels of 0, 1.5, 3.5 and 5% for all heat treatments. The crude protein of treated fish was 50.75, 52.50, 50.55 and 50.05% for sun drying, roasting, direct boiling and indirect boiling, respectively and for super concentrate 31.50%. Rations had been formulated according to NRC, 1994 recommendations. A total of 390 birds of Hy-line W-98 at 19 week of age were randomly distributed for groups, 5 group (6 replicate/13 birds). The performance of layers during the productive period (22 up to 40 weeks) showedsignificant differences (P