This photo shows the type of confinement used at an Oklahoma pig operation that a California-based animal rights group, while conceding such pens are not illegal, is working to have eliminated. [Photo provided]

Hormel Foods Corp. said Tuesday it has stopped accepting hogs from a pork supplier in Oklahoma after an animal rights group released undercover video from a farm the supplier owns showing pigs in crowded pens and being hit with gas cans.

The company says is investigating the facility owned by The Maschhoffs, one of the largest pork producers in the U.S.

Hormel said third-party auditors would go to other Maschhoffs sites to check animal care standards.

"Animal stewardship, including the care and humane treatment of animals, is one of our most important values," Austin, Minnesota-based Hormel said in a statement. The company said it would not tolerate violations of its strict policies on animal care and welfare.