The Minnesota Senate has approved expanding a zero-interest disaster loan program for farmers, just in time for producers whose buildings have been damaged by heavy snow this winter.The “Save our Farms” bill, authored by state Sen. Mike Goggin, R-Red Wing, whose district includes parts of Winona County, passed the Senate unanimously Thursday. It broadens eligibility for the Disaster Loan Recovery Program run by the state’s Rural Finance Authority. The proposal was one of many that were included in a massive budget bill vetoed by Gov. Mark Dayton last year.A similar farm aid bill awaits a vote on the House floor.