Walking Horse trainers Jackie McConnell, John Mays and Jeff Dockery all were sentenced Tuesday.
McConnell pleaded guilty to animal abuse and received five years supervised release, including one year of house arrest. He also was fined $25,000.
Mays and Dockery pleaded guilty and were sentenced to four years and three years of federal supervision respectively.
The sentencings stem from an investigation by the Humane Society. For nearly two month in 2011, an undercover investigator documented the cruel application of caustic substances to the legs of horses. That process is called "soring." It's when trainers use chemicals, such as mustard oil and heavy chains on a horse's legs in order to intentionally inflict pain, causing what is known as a higher "action" by the horse.
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