Oil prices were mixed in Asian trade today as data showing Chinese manufacturing picking upstrongly in March was offset by profit taking.New York's main contract, light sweet crude for delivery in May, dropped 18 cents to USD 93.32 a barrel while Brent North Sea crude for May delivery was up a cent to USD 108.73 in late morning trade.Prices had rallied in New York yesterday after official data showed an unexpected decline in US oil inventories.Oil inventories fell by 1.3 million barrels in the week ending March 15, the US Department of Energy reported.Analysts had forecast a rise of 1.7 million barrels