Porcine reproductive and respiratory syndrome (PRRS) is devastating. First detected in the United States in 1987, it now costs North American farmers more than $600 million annually.Pigs that contract the disease exhibit an inability to conceive, increased late-term abortions, premature farrowing, stillborn pigs, and weak piglets that often die before weaning or show slow growth and development. The airborne virus can be passed from sow to pig.
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