The rule will limit horses to no more than five starts in 30 days.

In a press release, Tasracing said it would "prevent the over-racing of horses."

However it did not provide any statistics on how many horses it believed had been over-raced, either this season or at any time in the past.

Yole said he believed the new rule was a knee-jerk reaction to comments made at an industry seminar in Hobart last year.

"It has been introduced without consulting vets or the Office Of Racing Integrity," he said.

"It is not based on veterinary advice or scientific facts.

"They'll be upset when they can't get fields for meetings at Devonport and Burnie."

Yole operated a satellite stable in Victoria for several months last year during the period when his racing opportunities in Tasmania were limited.

"No doubt I will have to do the same again," he said.

Tasracing chief executive Paul Eriksson admitted the five-start rule may reduce field sizes and the number of races at each meeting but said "the welfare considerations for the animals were considered more important."

New animal welfare rules will also be introduced for greyhound racing, forcing owners to make 'every effort' to re-home retired dogs.

Eriksson said restrictions around the euthanasia of greyhounds had been "significantly strengthened" and the new rules applying to re-homing would give ORI more authority to ensure everyone complied.

"For the majority of the Industry, these rules merely formalise current practices however their introduction sets the level of conduct that is expected from the industry," he said.

"In the 2018-19 financial year, 34 greyhounds were euthanized because they were unsuitable for racing. We want that number to be zero."

Every effort will be made to save brilliant greyhound Nitro Sambar who was injured during Monday night's Launceston Cup final.

Owner Samantha Freeman, better known as a harness racing driver, was still waiting on the results of x-rays on Tuesday afternoon.

"We still don't know how bad it is but we'll give him every chance," Freeman said.

"Surgery might be an option but we're keeping our fingers crossed that it's not too bad.

"It's a real longshot that he'll ever race again but there is always hope."

Nitro Sambar is Freeman's first venture into greyhound racing after Loira trainer Paul Hili gave her the dog as a birthday present.

He has taken her on an amazing ride, winning 17 of his 39 starts with another 15 minor placings.

Caishen's win in the Launceston Cup capped a lucrative three days for leading Victorian trainer Anthony Azzopardi.

He also won two group 1 races in MeIbourne on Saturday night.

First prizemoney for the three races totalled $215,000.

Beauty Point reinsman Rohan Hillier brought up his 700th career win in Hobart on Sunday night.

A big percentages of his wins have come on horses that he's trained himself but he achieved the milestone on Marc Butler-trained three-year-old filly A Spanish Dance.

Hillier also scored earlier in the night on his own stable star Ryley Major who made it 11 wins in a row in the Metropolitan Cup.

Longford trainer Bill Ryan has nothing but admiration for his veteran stayer Speed Force who has been retired after a career netting 12 wins and $215,000 in prizemoney.

"We love this grand old horse (but) unfortunately Father Time caught up with him," Ryan said.

Speed Force's wins included the Tasmanian St Leger and he ran second in the 2019 Devonport Cup but Ryan will remember him more for his courage.

"He's been an old warhorse," the trainer said. "He carried injuries for a long time.

"His worst setback came after racing on a 40-degree day in Hobart. It gutted him and he took a long time to get over it. But he came back to win more races carrying big weights."