title: Evaluation of methanol extraction for determination of bacitracin in feeds.
abstract: Five laboratories evaluated methanol extraction for the determination of zinc and methylene disalicylate (MD) bacitracn in swine and poultry feeds at 100 g/ton and 2 premixes labeled 50 g/lb (MD bacitracin) and 40 g/lb (zinc bacitracin). Bacitracin activity was determined on each of 2 days with 2 dilutions on each day. No significant difference was found between dilutions within a day or between days for each sample. The kind of bacitracin or type of feed did not significantly affect results.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D001414:Bacitracin / Q000032:analysis*; D000432:Methanol; D011200:Poultry; D013552:Swine
chemical_list: D001414:Bacitracin; D000432:Methanol