FENNER, N.Y. (AP) — About 50 to 60 cattle were trapped inside a dairy barn in the upstate New York town of Fenner after the structure's roof partially collapsed under the weight of heavy snow.

Volunteer firefighters and neighbors worked to shovel the snow off the collapsed part of the barn to free the animals on Saturday and to assess the damage.

Smithfield Fire Chief Mark Bradbury said some cattle died in the 4:45 p.m. collapse at the Stone Brothers Farm and Greenhouse.

Bradbury said a 60- to 80-foot section of roof collapsed after being weighed down by an accumulation of heavy snow over the past two days.

Fenner is about 8 miles south of Rochester, N.Y., in Madison County.

Copyright 2010 The Associated Press.