BEIJING, Feb 5 (Reuters) - China will levy heavy anti-dumping duties on U.S. chicken products, its Commerce Ministry said on Friday, a move likely to aggravate trade relations and antagonise one of the few U.S. industries that profitably exports to China. The ministry's initial investigation showed that U.S. companies had dumped chicken products into the Chinese market, according to the ministry's website (www.mofcom.gov.cn). The tariffs were announced a day after China requested a World Trade Organisation ruling on European Union duties on shoes made in China. That was the most recent of many cases demonstrating China's embrace of the WTO...