Dan U Thomson

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OBJECTIVE To determine the biocontainment, biosecurity, and security practices at beef feedyards in the Central Plains of the United States. DESIGN Survey. SAMPLE POPULATION Managers of feedyards in Colorado, Kansas, Nebraska, Oklahoma, and Texas that feed beef cattle for finish before slaughter; feedyards had to have an active concentrated animal(More)
OBJECTIVE To compare the efficacy of gamithromycin with that of tulathromycin for the treatment of undifferentiated bovine respiratory disease complex (BRDC) in feedlot calves. ANIMALS 1,049 weaned crossbred beef calves. PROCEDURES At each of 6 feedlots, newly arrived calves with BRDC were administered a single dose of gamithromycin (6.0 mg/kg, SC; n =(More)
OBJECTIVE To compare the efficacy of gamithromycin with that of tulathromycin for control of undifferentiated bovine respiratory disease complex (BRDC) in feedlot calves. ANIMALS 2,529 weaned crossbred beef calves. PROCEDURES At each of 2 feedlots, calves at risk of developing BRDC were administered a single dose of gamithromycin (6.0 mg/kg, SC; n =(More)
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