Poultry industry plays an important role to supply sufficient animal meat protein and eggs for human consumption. According to Thomas and Chuah (2012), in 2000, poultry industry produces 78% of chicken's meat from the total of meat production and continuously increased to 83% yearly. The increasing demand in chicken's meat has contributed farmers to fulfil the demand of the consumer. However, the development of the poultry industry especially chicken's sector may retard due to expensive feed cost. In the feed formulation system, the feed cost alone is around 70%-80% of the total production cost. A chicken's diet consists of feedstuffs like corn and soya bean as the major of the protein sources. Hence, nutritionist tends to minimize the feed ingredient cost by using by-products from various sources and unconventional
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