HUNDREDS of pig farmers will stage a rally outside a government office on Monday in protest against proposed waste legislation. The farmers said yesterday they would take radical action to vent their anger, which might include dumping pig waste on the street. A Hong kong Livestock Industry Association spokesman, Ng Po-wing, said: ''The law is too restrictive. The Government is not helping to improve the environment, but killing us.'' The Government is revising a failed 1987 livestock waste control scheme that required farmers to treat their waste to prevent polluting streams. The proposed changes to the scheme, which go to the Legislative Council on Wednesday, more than double capital grants for farmers who install pollution treatment systems and provide almost five times as much money for farmers who opt to go out of business. Farmers in areas previously slated to have livestock-rearing phased out, will be allowed to continue operating. Mr Ng said at least 300 farmers would take part in the rally outside the Planning, Environment and Lands Branch.