Olymel is closing five sow barns in Alberta and one in Saskatchewan as it continues to struggle with its finances.
Last month it announced closure of a large hog-slaughtering plant in Quebec where the hog industry is facing a brutal down-sizing.
The barn closures in the West will reduce its sow herd there from 57,000 to 40,000 and market hog production by about 200,000 head.
Olymel is laying off 994 workers, 911 of them union members and 83 managers.
The barn closures will be phased over several months, the company is looking to buy market hogs from others and said its sow barns will remain closed until market conditions improve.