HAPPY, Texas — Randy Shields looked out at a sea of cattle at the sprawling Wrangler Feedyard — 46,000 animals milling about in the dry Panhandle air as a feed truck swept by on its way to their pens.
FDA-approved beta-agonists in cattle feed are widely used to help feedlot cattle efficiently produce more lean muscle, but one beta-agonist, Zilmax, was voluntarily suspended by its manufacturer due ...
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