Publications by authors named "Erik M Corbett"
Objective: To determine whether feeding a direct-fed microbial (DFM) to dairy calves would reduce total and antimicrobial-resistant coliform counts in feces and affect average daily gain (ADG).
Animals: 21 preweaned Holstein heifer calves.
Procedures: The study had a randomized complete block design.
Objective: To evaluate the effects of a voluntary regional bovine viral diarrhea virus (BVDV) control project implemented in the Upper Peninsula of Michigan.
Design: Longitudinal study. Sample-294 cattle producers and 11,917 cattle from the Upper Peninsula.
Objective: To determine whether vaccine virus can be detected by use of reverse transcriptase (RT)-PCR assays for pooled and individual skin samples obtained from cattle after vaccination with a commercially available modified-live bovine viral diarrhea virus (BVDV) vaccine.
Animals: 12 BVDV-seropositive steer calves and 7 BVDV-seronegative (antibody titer < 1:4) heifers; all cattle were free of persistent infection with BVDV.
Procedures: 2 experiments were conducted.
Forty-seven cattle management groups from 36 herds in a regional Bovine viral diarrhea virus (BVDV) eradication program were selected to evaluate serology as a tool to detect herd infection with BVDV. Serum samples were obtained from 5 non-vaccinated sentinel calves ≥ 6 months old in each management group and virus neutralizing (VN) antibody titers against BVDV genotypes 1 and 2 were determined. A herd was considered positive if 2 or more sentinel calves had VN antibody titers ≥ 128 to either genotype.
View Article and Find Full Text PDF