LITTLE ROCK — Nine employees at a Wyoming pig breeding supplier that sold pigs to a subsidiary of Tyson Foods have been charged with cruelty to animals, according to the Humane Society of the United States.

Springdale-based Tyson Foods asked its supplier to stop purchasing pigs from Wheatland, Wyo.-based Wyoming Premium Farms in May after the national Humane Society released a video taken at the farm that showed employees kicking live piglets, swinging piglets in circles by their hindlegs and striking adult pigs with their feet and fists.

"The Humane Society of the United States applauds the Wyoming Livestock Board and the Platt County Attorney’s Office for their serious attention to cruelty to animals, including animals raised for food," Adam Parascandola, director of animal response for the group, said in a release.

In May, after the Humane Society of the United Stated released the video, Tyson spokesman Worth Sparkman said Tyson does not condone animal abuse and that Tyson did not purchase any hogs from the Wyoming farm for its food processing plants, but some aged sows had been purchased by a company subsidiary.

He said the subsidiary had discontinued purchasing sows from the farm show in the video.

An animal cruelty conviction in Wyoming carries a maximum penalty of up to two years in prison and up to a $5,000 fine, according to the Humane Society of the United States.