Pharmacokinetics of Levofloxacin Following Intravenous and Intramuscular Administration in Cattle Calves

Research Article

Pharmacokinetics of Levofloxacin Following Intravenous and Intramuscular Administration in Cattle Calves

Arvind Kumar, Anu Rahal, Ram Ragvendra, Atul Prakash, Rajesh Mandil and S.K. Garg

Levofloxacin is a third generation fluoroquinolone with excellent tissue penetration and efficacy against respiratory and urogenital bacterial infections. In the present study, disposition kinetics of levofloxacin was studied in cattle calves following an intravenous (i.v.) and intramuscular (i.m.) administration at a dose rate of 10 mg kg^-1. Blood was collected at predetermined time intervals and plasma was separated. Plasma concentrations of levofloxacin were determined using the HPLC assay method (R² = 0.999). Plasma concentration versus time data was subjected to compartmental pharmacokinetic analysis using nonlinear iterative computer software “PHARMKIT”. Following intravenous and intramuscular administration of levofloxacin in cattle calves (10 mg kg^-1), the plasma concentration versus time data of levofloxacin was best described by two-compartment open model and one-compartment open model with first order absorption rate constant with modest bioavailability values, respectively. The mean values for t_½α and t_½β were 0.05±0.01 h and 2.12±0.21 h, respectively for i.v. route. The values of AUC, Vd_area and Cl_B were found to be 29.32±1.19 μg mL^-1 h, 1.05±0.10 L kg^-1 and 0.34±0.01 L h^-1 kg^-1, respectively while the ratio of drug concentrations between the tissues and plasma (T/P) was 4.47±02.09. For i.m. route, the mean (±SE) values of t_1/2Ka, t_½β, AUC, MAT, MRT and F were found to be 0.51±0.09 h, 2.76±0.36 h, 18.43±2.15 μg mL^-1 h, 1.85±0.46 h, 4.72±0.72 h and 62.65±5.99%, respectively. Based on the pharmacodynamic indices, the optimal dose of levofloxacin in cattle calves may be proposed as 10 mg kg^-1 b.wt. repeated at 24 h interval preferably by intravenous route for treating common microbial infections of veterinary importance.

PDF Fulltext XML References Citation

How to cite this article

Arvind Kumar, Anu Rahal, Ram Ragvendra, Atul Prakash, Rajesh Mandil and S.K. Garg, 2012. Pharmacokinetics of Levofloxacin Following Intravenous and Intramuscular Administration in Cattle Calves. Asian Journal of Animal and Veterinary Advances, 7: 1006-1013.

DOI: 10.3923/ajava.2012.1006.1013

URL: https://scialert.net/abstract/?doi=ajava.2012.1006.1013

Asian Journal of Animal and Veterinary Advances

Article Trend

Total views 405

Authors

Arvind Kumar

Anu Rahal

Ram Ragvendra

Atul Prakash

Rajesh Mandil

S.K. Garg

Keywords

Research Article

Pharmacokinetics of Levofloxacin Following Intravenous and Intramuscular Administration in Cattle Calves

How to cite this article

Related Articles

Leave a Comment