"We are committed to producing the safest, highest quality products for consumers and prudent use of antibiotics for flock health is a part of that, " says a spokeswoman for ConAgra (nyse: CAG - news - people ), which owns Butterball Turkey.

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If the laws change, large beneficiaries might include large agricultural groups like Archer Daniels Midland (nyse: ADM - news - people ) and ConAgra Foods (nyse: CAG - news - people ) as potential growers or distributors and liquor businesses like Constellation Brands (nyse: STZ - news - people ) and Allied Domecq (nyse: AED - news - people ), which understand the distribution of intoxicants.

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The result: a quiet long-term decline, in the multiples of branded-food biggies like General Mills, ConAgra ( CAG) and Kraft ( KFT).

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ConAgra Foods ( CAG), for example, recently reported that its fiscal second-quarter profit fell 16%, largely because commodity prices rose while at the same time consumers were more budget-conscious.

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