This sharp sell-off has been a surprise to me also. Expect the unexpected!
I can't help but wonder if talk of Russian sanctions is having an affect on pork/chicken markets. We sanction Russia and they have threatened to take measures to make us (USA and EU) feel pain. We know Russia imports a lot of chicken, and we've seen past cutoffs of chicken exports. In terms of US pork, Russian market is minor compared to Pacific rim countries. However ... Russia imports a fair amount of EU pork. With sanctions and counter-measures, that EU pork would need to find a place in world markets.
Just trying to understand this crazy market.