Date of this Version
2016 Nebraska Beef Cattle Reports
OmniGen- AF (Phibro Animal Health, Quincy, IL) was fed to steers to evaluate the effects on the metabolic and immune response during an immune challenge, as well as feedlot performance. Th e inclusion of OmniGen- AF for either the first 28 d or the entire feeding period) did not impact feedlot performance or carcass characteristics. However, within a subset of cattle receiving an immune challenge (the endotoxin lipopolysaacharide; LPS), OmniGen- AF supplementation did alter the metabolic and immune profile of steers. These results suggest that feeding of OmniGen- AF may enhance the metabolic and immune response if cattle are challenged by bovine respiratory disease.