In the ad, Nelson looks into the camera while "Georgia on My Mind" plays in the background.
"Dogfighting is against the law in Georgia, but the laws are so weak, the beautiful state of Georgia has become a haven for dogfighters from around the country," he says.
The bill would make it a felony for anyone to sell, trade or transport dogs for the purpose of dogfighting.
Utah-based Best Friends Animal Society, a national animal welfare organization, produced the piece and asked Nelson to participate.
State Sen. Chip Rogers, the bill's author, hopes to get the spot on TV and radio around the time of the Dec. 10 sentencing for suspended Atlanta Falcons quarterback Michael Vick, who pleaded guilty to a federal dogfighting conspiracy charge.
The bill has passed the state Senate and will go before a House committee in January.
Copyright © 2007 The Associated Press