Customers choose slaughtered pigs at a wholesale pork market in Hefei, Anhui province in this December 5, 2012 file photo. People in China eat more than half the pork consumed in the world but domestic supplies come mainly from small farms that cut their herds whenever costs rise, causing boom-and-bust cycles that have led to record-high hog prices in 2015. (Photo by Reuters/Stringer)
