Profit taking.
The price of corn is crashing (so much so it is going to hurt the economy). One of the major buyers of our beef, pork, and chicken is mad at us (Russia) and has cut off imports.
The drought is shifting beef production away from the Plains to the Midwest, but numbers are still good.
In other words, be careful buying to many beef futures.
Hasn't happened around here yet. Corn on the cob is about 65-80 cents an ear. At this time of the year in the recent past, it's usualy 20-25 cents.