Oil prices rose in Asian trade today as a weaker US currency made the dollar-priced commodity cheaper and spurred demand.Upbeat employment data in the United States also buoyed sentiment and fuelled hopes demand will improve in the world's biggest oil consuming nation. New York's main contract, light sweet crude for delivery in April was up 15 cents to 93.21 dollars a barrel in morning trade and Brent North Sea crude for May gained 43 cents to 109.40 dollars.