Progress on ferry schedules means that up to 80,000 calves can be exported from the end of March, senior Department of Agriculture vets told the Oireachtas committee on agriculture this Tuesday.Irish Ferries' new ship, the WB Yeats, was expected to alternate sailings with existing ships from the end of May, allowing for maximum use of the 4,000/day lairage to disembark calves at Cherbourg, France.