Exporters including Tyson Foods Inc, Sanderson Farms Inc and Pilgrim’s Pride Corp had backed the US case.
China first announced charges on US poultry in August 2010, according to the statement.
The US filed its WTO complaint against the tariffs in September 2011.
US exports, mostly chicken feet shunned by its own consumers, continued entering China even with the anti-dumping duties, while Chinese poultry could not access the US market, Ma said, who is also a former official at the state-run China Animal Agriculture Association.
China and the US will hold further talks on access for China-produced cooked poultry meat to the US, Xinhua news agency said in a statement dated on Friday last week.