Pharmacokinetics of ceftiofur crystalline free acid after single subcutaneous administration in lactating and nonlactating domestic goats (Capra aegagrus hircus)

Elizabeth Doré, John A. Angelos, Joan D. Rowe, Jan L. Carlson, Scott E. Wetzlich, Hung T. Kieu, Lisa A. Tell

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Six nonlactating and six lactating adult female goats received a single subcutaneous injection of ceftiofur crystalline free acid (CCFA) at a dosage of 6.6 mg/kg. Blood samples were collected from the jugular vein before and at multiple time points after CCFA administration. Milk samples were collected twice daily. Concentrations of ceftiofur and desfuroylceftiofur-related metabolites were measured using high-performance liquid chromatography. Data were analyzed using compartmental and noncompartmental approaches. The pharmacokinetics of CCFA in the domestic goat was best described by a one compartment model. Mean (±SD) pharmacokinetic parameters were as follows for the nonlactating goats: area under the concentration time curve0-∞ (159 h.μg/mL ± 19), maximum observed serum concentration (2.3 μg/mL ± 1.1), time of maximal observed serum concentration (26.7 h ± 16.5) and terminal elimination half life (36.9 h; harmonic). For the lactating goats, the pharmacokinetic parameters were as follows: area under the concentration time curve0-∞ (156 h.μg/mL ± 14), maximum observed serum concentration (1.5 μg/mL ± 0.4), time of maximal observed serum concentration (46 h ± 15.9) and terminal elimination half life (37.3 h; harmonic). Ceftiofur and desfuroylceftiofur-related metabolites were only detectable in one milk sample at 36 h following treatment. There were no significant differences in the pharmacokinetic parameter between the nonlactating and lactating goats.

Original languageEnglish (US)
Pages (from-to)25-30
Number of pages6
JournalJournal of Veterinary Pharmacology and Therapeutics
Volume34
Issue number1
DOIs
StatePublished - Feb 2011

ASJC Scopus subject areas

  • Pharmacology
  • veterinary(all)

Fingerprint

Dive into the research topics of 'Pharmacokinetics of ceftiofur crystalline free acid after single subcutaneous administration in lactating and nonlactating domestic goats (Capra aegagrus hircus)'. Together they form a unique fingerprint.

Cite this