ABOUT 30 per cent of pork in local markets is smuggled in from China without health checks, workers claimed yesterday. Hong Kong Livestock Industry Association president Cody Tse Hing-cheung said in the past only carcasses had been smuggled in but now live pigs were being sneaked across the border. He said the contraband meat could pose a health hazard as it did not undergo proper health checks. Mr Tse pointed out that a recent survey had found salmonella present in meat purchased at local markets. About 300 pig farmers petitioned legislators yesterday and staged a march in Central urging the Government to take action. The association spokesman, Wong Kwong-wing, said penalties should be increased. The current maximum is a $25,000 fine and six months' imprisonment. Mr Wong also suggested that container vehicles or boats used should be confiscated. Legislative Councillor James To Kun-sun said government departments should step up their action and asked pig farmers to help provide information. The Regional Services Department has made 30 raids this year, with 13 arrests and 159 pig carcasses and 3.43 tonnes of chopped pork seized. Last year the department conducted 24 raids. Ten people were prosecuted and fined between $1,000 and $3,000. The Urban Services Department said it would step up inspections in markets and abattoirs if necessary.