首页> 外文期刊>The Bovine Practitioner >Duration of Efficacy of Ceftiofur Crystalline Free Acid Compared to Tilmicosin When Administered at Various Times before Intratracheal Mannheimia haemolytica Challenge in Calves
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Duration of Efficacy of Ceftiofur Crystalline Free Acid Compared to Tilmicosin When Administered at Various Times before Intratracheal Mannheimia haemolytica Challenge in Calves

机译:犊牛气管内溶血曼海姆氏菌攻击前不同时间给药头孢噻呋结晶游离酸与替米考星相比的疗效持续时间

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摘要

The primary objective of this study was to evaluate the duration of protection provided against bovine respiratory disease (BRD) by ceftiofur crystalline free acid sterile suspension (CCFA-SS; 200 mg ceftiofur equivalents [CE]/mL) administered as a single injection subcutaneously (SC) in the middle third of the posterior aspect of the ear of calves compared to tilmicosin. Treatments were administered at 3, 5, 7, or 9 days before intratracheal challenge with Mannheimia haemolytica. Secondary objectives included determining plasma ceftiofur and desfuroylceftiofur-related metabolite concentrations and serum haptoglobin concentrations at various predetermined times.
机译:这项研究的主要目的是评估皮下注射一次注射头孢噻呋结晶游离酸无菌混悬液(CCFA-SS; 200 mg头孢噻呋当量[CE] / mL)对牛呼吸道疾病(BRD)的保护持续时间(与替米考星相比,位于小牛耳朵后部中间三分之一的位置)。在用溶血曼海姆氏菌进行气管内攻击之前的3、5、7或9天进行治疗。次要目标包括在各个预定时间确定血浆头孢噻呋和与呋喃头孢呋喃有关的代谢物浓度以及血清触珠蛋白浓度。

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