'More dead pigs found in China river'
This picture taken on March 18, 2014 shows a dead pig wrapped in plastic sheets on the bank of the Gan river in Nanchang, in eastern China's Jiangxi province
The animals were found floating in a tributary of China's second-longest waterway, the Yellow River, in northwestern Qinghai province, the official Xinhua news agency said.
The grim discovery follows a series of scandals involving dead pigs in Chinese rivers. Last year 16,000 carcasses were found drifting through the main waterway of the commercial hub of Shanghai.
In Qinghai -- the furthest west such an incident has been reported -- "the source of the dead pigs is still under investigation," Xinhua said, citing local authorities.
Industry analysts say sick pigs are sometimes dumped in rivers by farmers hoping to avoid paying the costs of disposing of the animals by other means.
Around 500 dead pigs are recovered every month from a Chinese reservoir in the southwestern province of Sichuan, state-run media reported in March.
Authorities also found 157 dead pigs last month in a river in central Jiangxi province.
China is a major producer of pork, which surveys have found to be the country's most popular meat.
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