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- Smith, Philip N., et al. Show all 3 Authors
- Environmental pollution 2019 v.247 pp. 467-473
- air; antibiotics; beef cattle; beta-adrenergic agonists; feedlots; monensin; particulates; ractopamine; resistance genes; steroids
- ... Beef cattle feedyards have been identified as sources of large amounts of particulate matter (PM) which may transport affiliated chemicals including steroids, beta agonists, and antibiotics from feedyards into the environment. This study is the first to examine persistence of PM-affiliated pharmaceuticals downwind of feedyards using multiple downwind samples collected at increasing distances from ...
- Smith, Philip N., et al. Show all 4 Authors
- Aerobiologia 2019 v.35 no.2 pp. 315-326
- antibiotics; beef cattle; community structure; dairies; estrogenic properties; estrogens; feedlots; microbial communities; milk production; particulates; steroids; veterinary drugs
- ... Particulate matter (PM) emitted from beef cattle feedyards transports manure-affiliated compounds including antibiotics and steroids from feedyards into the surrounding environment. Similarly, commercial dairy operations have the potential to release PM, comprised largely of aerosolized manure, into the surrounding environment along with associated veterinary antibiotics and steroids. The goal of ...