Benign enzootic paresis affects young , unweaned piglets for the most part.良性地方性轻瘫大部分侵害未断乳小猪.The piglets had the buttermilk and loved it.小猪喝脱脂乳而且很爱喝.The piglets are taken from the sow to be fattened for market.这些小猪被从母猪身边...