This book is the output of my MS research. I think it will be interesting for those researchers who want to do research work in the field of poultry nutrition. Specially for investigating the effect of different energy sources on the performance of broiler.I have investigated Bergafat as a new but promising energy source in addition with soyabean oil and palm oil and their influence on broiler performance. One can go for further study with these energy sources by including at their different levels and environmental conditions.