Farmers who blockaded gasoline distribution terminals in Ottawa over the weekend moved their tractor protest to 24 Sussex Drive on Monday.

Dozens of tractors began passing Prime Minister Stephen Harper's official residence at around 8 a.m. -- delaying traffic on the narrow road that is also home to embassies and diplomats.

The farmers are urging Harper to provide immediate aid to bail out cash-strapped food and livestock producers.

In an open letter released Monday, the Canadian Federation of Agriculture and allied organizations warned Harper that farmers are tired of being taken for granted.

"Other developed, and even less developed, nations demonstrate that they value domestic food production and its contribution to their nation's economy," said the letter, which was signed by the presidents of almost two dozen agriculture groups from across Canada.

"They support their farmers. Canada's farmers and Canadians of all walks of life deserve better."

Meanwhile, at a news conference Monday, federation president Bob Friesen demanded Harper's government allocate funds to counter subsidies offered to American and European farmers.

Friesen said farmers needed $2 billion a year for at least the next three years in order to compete at home and abroad.

The country's food supply is being jeopardized by rising production costs and "three of the worst years in history" for Canadian farm income," Friesen said.

"Canada can no longer attract or keep its young farmers because they cannot afford to farm."

Earlier this month, farmers conducted a major protest in Ottawa and blocked food distribution centres in parts of Ontario.

And around 50 tractors set up traffic barricades around three Ottawa-area fuel terminals on Sunday.

Farmer John Vanderspank, who helped organize recent protests, said they have to keep the pressure on Harper because he continually refuses to meet with them.

"We're trying to get the government to recognize that we need a risk-management program for agriculture," he told CTV News on Sunday.

The farmers want a meeting with Harper and Agriculture Minister Chuck Strahl to demand more funds to counter the U.S. and European subsidies before the upcoming federal budget.

They say the Conservative government has to adequately fund farm programs and address critical trade issues to provide farmers with greater stability and predictability.

Strahl has hinted the budget, expected next month, could contain $500 million a year in new aid for farmers across the country.