More than 1,600 racing greyhounds have died in Tasmania over the past three years, including 500 because they were unsuitable for racing, according to government figures obtained by the Greens.

Injury was responsible for another 488 deaths, while 400 were destroyed because they were deemed unsuitable for re-homing, a Department of Primary Industries document shows.

The Greens obtained the document via Right to Information.

Earlier this year, nine dogs were killed in one day in the north west, and in 2013 more than 30 dogs were killed on a single day in Launceston.

On Monday, the greyhound racing industry committed to re-homing all retired greyhounds unless there were health or behavioural issues.

Greens MP Andrea Dawkins said the figures were abhorrent.

"It's an absolutely tragic snapshot of the industry especially considering that many of these dogs, and there's 31 pages of dead dogs listed, were killed because of lack of ability or unsuitable for racing," she said.

"The industry has said it is going to improve and it's looking toward zero wastage - how is that possible?"

Government acting to reduce death toll: Minister

Primary Industries Minister Jeremy Rockliff said the euthanasing of dogs was a major national issue.

In a statement, he said he Government was acting to address it with initiatives like re-homing.

Mr Rockliff said funding for an adoption program is being increased to $248,000, and a dedicated adoption facility is being built.

"Breeding incentives are also being redirected to programs that focus on enhanced opportunities for the re-homing of greyhounds," he said.

"New breeding rules have also had immediate effect, with the number of greyhounds whelped in Tasmania reducing by around 55 per cent in the past 12 months."

Premier Will Hodgman has continued to back the state's greyhound racing industry, and said he was confident the number of deaths would be reduced in future.

"We've actually put in measures to support greyhound adoption, rehousing, the industry itself is responding to that, TasRacing believes that by 2019 every greyhound will be able to be rehoused," he said.

Tasmania refused to follow the lead of New South Wales and the ACT in banning the sport from next July.

The Government said it would consider recommendations from a parliamentary inquiry into the industry due to report next month.

The NSW ban followed an inquiry into mass killings, animal cruelty and live baiting raised in an ABC Four Corners report.

Mass graves believed to contain greyhound remains have been found in New South Wales and Queensland in recent weeks.

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