NORTHUMBERLAND, N.Y. (AP) — The owners of an upstate New York dairy farm say they expect to lose dozens of cows in addition to 60 killed when a barn roof collapsed last week.

Jeff King, co-owner of the Kings-Ransom farm in Northumberland, Saratoga County, says Tuesday morning that 35 cows died when part of the roof on the 400-foot-long barn caved in last Wednesday night. He says another 25 have since died and they expect as many as 40 others may have to be euthanized.

King says about 600 cattle were in the barn when the roof collapsed.

All the cows had been removed from the barn when the peaked roof's other side collapsed Saturday night.

King says the weight of several inches of snow from recent storms likely caused the collapses.

Copyright 2011 The Associated Press.