Updated at 6.15pm: A total of 30,000 day-old chicks arrived at 12 Hong Kong farms on Friday - the first mainland imports after the suspension of imports of day-old chicks was introduced on January 30. The suspension was introduced after suspected avian influenza cases were reported in the mainland earlier in the year. A spokesman for the Agriculture and Fisheries Department said the chicks came from three mainland registered farms and were covered by health certificates. 'The chicks met the inspection and quarantine requirements agreed between Hong Kong and the mainland authorities,' he said. Last month, poultry traders threatened to go to the Ombudsman and the Consumer Council if the government did not allow full resumption of live chicken imports from the mainland. Hong Kong Poultry Wholesale and Retailing Association chairman Steven Wong Wai-chuen estimated that the restriction on live chicken imports was costing the industry $3 million a day. He said it was difficult for the industry to survive. Live chicken imports resumed on April 20 when 6,000 chickens were allowed into Hong Kong. The supply has been gradually increased to 30,000 a day - about a third of the normal level.