"This has caused vegetables and other products... to be unable to leave the villages and reach cities, as well as difficulty in replenishing the feed for livestock and poultry in time," the agriculture, transport and public security ministries said in a joint statement.
It said feed producers should "speed up" production to meet demand for animal feed, and slaughterhouses needed to "increase the effective supply of livestock and poultry products".
The notice came as the China Shouguang vegetable price index, a daily benchmark of national produce costs, surged to its highest level in almost four years, Xinhua News Agency reported.
Food prices were already under pressure after African swine fever raced through the country's pig herds, pushing up pork prices by 97 percent on-year in December.
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