PLUMERVILLE, Ark. — Tyson Foods on Wednesday unveiled a plan to stop abuses down on the farm, but an animal rights group that routinely distributes videos of disturbing practices of agricultural abuses said monitoring slaughterhouses won’t stop other cruelty that exists within the poultry industry.

The nation’s largest meat producer said it installed cameras and hired off-site auditors to review how it handles and kills birds at its 33 processing plants. The Springdale, Ark.-based company also plans to explore using carbon dioxide to render the birds unconscious before they are killed.

Mercy for Animals said the company hasn’t done enough.

“Chickens raised for meat are bred to grow so unnaturally fast that they often collapse under their own weight,” the group said in a news release. Once on the ground, the birds sit in their own waste and develop sores after losing their feathers.

“While we applaud Tyson for working to reduce the animal cruelty incidents on its farms, Tyson has yet to commit to adopting specific animal welfare standards that will reduce severe suffering,” said Brent Cox, the group’s vice president of corporate outreach.

The Humane Society of the United States also called on Tyson to adopt a broader plan.

“It’s positive Tyson is looking at the core forms of animal cruelty in its production systems for chickens, but we are disappointed that the company is sidestepping other steps,” said Matt Prescott, the group’s senior food policy director.

Tyson installed cameras at 33 processing plants over the past year and has hired nearly five dozen animal well-being specialists.