http://www.digitaljournal.com/article/345458

3,000 pigs might have succumbed to cold weather

Posted Mar 11, 2013 by Valerie Benguiat
Around 3,000 dead pigs have been fished out of the Huangpu River, the main drinking water source for Shanghai. Most of the pigs have been identified to come from the neighboring city of Jiaxing, in Zhejiang Province, according to their ear tags.
Sows used for breeding are confined in 7ft x 2ft gestation crates
Sows used for breeding are confined in 7ft x 2ft gestation crates
SlimVirgin
Yesterday, Zhejiang Province agriculture authorities reported that the pigs might have died due to last month’s cold weather.
By yesterday evening, workers from the Shanghai City Appearance and Environmental Sanitation Administration had removed more than 2,800 pigs’ carcasses from the Huangpu River.
The Shanghai Municipal Agricultural Commission was commissioned to test randomly picked carcasses in search of diseases and virus. Five carcasses were tested, and only one tested positive for porcine circovirus, which can be deadly for pigs but is harmless for humans.
Authorities haven’t been able to locate the exact point of origin of the pigs.
"The ear tags were vague, and some were scratched up because farmers know that it is illegal to dump dead pigs in the water. It will take time to figure out their source," a press officer surnamed Mo from the Pinghu city government told the Global Times.