Concerns have been raised in central Queensland that some shooters are releasing youngs pigs in the Rockhampton area so they do not have to travel so far to shoot them.

The Australian Pig Doggers and Hunters Association's Wayne Flintham says it is totally irresponsible and against the law.

"We really detest them sort of people doing that sort of stuff obviously," he said. "We frown upon this very much so, we're here to try to rid Australia of these pests and letting them go in not something we like."

Biosecurity Queensland says the fine for releasing pigs is up to $30,000, but no-one has ever been prosecuted.