Grains all close higher Friday and post higher weekly closes.  Was it all fund short covering end of month or are the grain marktes changing trend?  Bryan Doherty, Total Farm Marketing, dicusses what he's watching for confirmation the markets have bottomed.  Cattle finish higher for the week, despite steady to lower cash.  So can the market build on that?  Hogs also extend gains Friday and for the week on fund buying but what are the fundamentals supporting the market?  

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