Shryock T R, Klink P R, Readnour R S, Tonkinson L V
Animal Science Research Division, Lilly Research Laboratories, Eli Lilly and Company, Greenfield, Indiana 46140.
Avian Dis. 1994 Jul-Sep;38(3):501-5.
A factorial arrangement of tilmicosin and bentonite was evaluated for efficacy in broiler chickens infected with Mycoplasma gallisepticum and correlated to tilmicosin recovery in a feed assay method. Tilmicosin at 300-500 g/ton prevented development of airsacculitis. The addition of 2% bentonite to the ration caused tilmicosin at 300 g/ton to be ineffective in controlling air-sac lesions, whereas 400 and 500 g/ton were moderately effective. Six percent bentonite rendered tilmicosin completely ineffective at all dose levels. There was a direct correlation between the percentage of bentonite in the feed rations, the percentage of the tilmicosin recovered in the assay procedure, and the increased incidence of air-sac lesions.
对替米考星和膨润土的析因排列进行了评估，以确定其对感染鸡毒支原体的肉鸡的疗效，并通过饲料分析方法将其与替米考星回收率相关联。每吨300 - 500克的替米考星可预防气囊炎的发生。日粮中添加2%的膨润土会使每吨300克的替米考星在控制气囊病变方面无效，而400克/吨和500克/吨则有中等效果。6%的膨润土使替米考星在所有剂量水平下都完全无效。日粮中膨润土的百分比、分析过程中回收的替米考星百分比以及气囊病变发生率的增加之间存在直接相关性。
