McDonald’s Corp. and Tyson Foods Inc. severed ties with a Tennessee poultry farm after an animal-rights group on Thursday released video footage from the facility that showed chickens being stabbed, clubbed and crushed to death.

Mercy for Animals said it documented animal abuse and inhumane conditions at T&S Farms, which the group said supplied chickens to a nearby Tyson processing plant that produced chicken McNuggets and other chicken products for McDonald’s.

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