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Constructed Wetlands Can Stem Hog Hormones in Runoff

ARS research showed that wetlands can help prevent hormones in livestock waste from entering aquatic ecosystems.

Some hog farmers have begun constructing wetlands to help handle wastewater from their operations, reducing nitrogen and phosphorous in runoff. Now an Agricultural Research Service-led research team is reporting another use for constructed wetlands on hog farms: reducing the livestock hormones in the effluent.

Scientists have raised concerns about hormones from livestock waste entering the environment and throwing off the endocrine-system function of fish and other aquatic life.

Researchers who have been studying the effectiveness of constructed wastelands in reducing livestock hormones in wastewater say wetlands reduced estradiol - a naturally secreted estrogen - by 83% to 93%.

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