TORY MP for South West Devon Gary Streeter has accused Gordon Brown of leading an "urban-centric" Government that had failed to tackle TB in cattle.
Speaking during Prime Minister’s Questions in the Commons, Mr Streeter said thousands of dairy farmers feared for safety of their herds because of the disease.
It is the latest criticism of the approach taken by ministers, who have controversially ruled out a badger cull to deal with bovine TB.
Mr Brown acknowledged that methods of tackling the disease have been "hotly debated" over the years.

Environment Secretary Hilary Benn held regular meetings with the National Farmers’ Union (NFU) about the issue he said.A cross-party group of MPs has already said that Government steps to curb TB in cattle were "not good enough" and failed to recognise the seriousness of the situation.
Farmers in Devon have continued to call for a cull, with the county one of the worst-hit areas in the country for bovine TB.
Raising the issue in the Commons, Mr Streeter said: "Thousands of dairy farmers wake up every morning throughout the United Kingdom wondering if this will be the day that the herd that they have so lovingly built up over their lifetime will be slaughtered because they react positively to a test for bovine TB.
"When will this urban-centric Government put in place effective policies to deal with this dreadful disease?"
Mr Brown said: "The means of dealing with this disease have been hotly debated over the years. I’m happy to look at any proposals you have for the future."
He added: "The investment that we have made in rural areas would be cut by the Conservative Party."
Last year MPs on the Environment, Food and Rural Affairs Committee were highly critical of steps being taken by the Government to combat the spread of bovine TB, arguing they were not working effectively.
About 2,500 cattle a year get TB, and some 30,000 stock are killed every year because of the disease, according to the National Farmers’ Union.
But wildlife campaigners have argued repeatedly that culling badgers would not help attempts to reduce the prevalence of the disease in livestock.