Sept. 14 (Bloomberg) -- China announced dumping and subsidy probes of chicken and auto products from the U.S., two days after President Barack Obama imposed tariffs on tires from the Asian nation.

Chinese industries complain that they’re being hurt by “unfair trade practices,” the nation’s Ministry of Commerce said on its Web site yesterday. The dumping investigation relates to poultry alone, a spokesman said in Beijing today. The ministry didn’t specify the value of imports of the products.

Rising protectionism may hamper world trade and undermine the global economy’s recovery from recession, the European Central Bank said last week. The U.S. placed tariffs starting at 35 percent on $1.8 billion of tire imports from China, backing a United Steelworkers union complaint against the second-largest U.S. trading partner.

“While there’s friction, I suspect that the two nations will keep any disputes under control,” said David Cohen, an economist at Action Economics in Singapore. “They understand that they’re increasingly dependent as trading partners.”

Dumping is selling goods for less than the cost of producing them.