Introduction
In Thailand, more than 60% of the cost of milk production is the cost of feeds, particularly concentrates. Increases in the cost of feeds inevitably cause increases in the cost of milk production. In addition, the increase in demand for renewable energy has affected the price of livestock feeds such as cassava chip and molasses since they are the major raw materials for ethanol production. Both feedstuffs have risen in price to the point where there is interest in reducing the level consumed by the animals.There are many attempts to reduce cost of feeds through the utilization of cheap raw materials,such as agro-industrial by-products. Although cassava pulp, the residue obtained after the extraction of starch from cassava roots, is low in crude protein (CP), it is present in a considerable amount. Sriroth (2006) reported