Fachbereich Veterinärmedizin


Service-Navigation

    Publikationsdatenbank

    Ceftiofur derivatives in serum, uterine tissues, cotyledons, and lochia after fetal membrane retention (2006)

    Art
    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Autoren
    Drillich, M.
    Arlt, S.
    Kersting, S.
    Bergwerff, A. A.
    Scherpenisse, P.
    Heuwieser, W.
    Quelle
    Journal of Dairy Science; 89(9) — S. 3431–3438
    ISSN: 0022-0302
    Sprache
    Englisch
    Verweise
    Pubmed: 16899676
    Kontakt
    Tierklinik für Fortpflanzung

    Königsweg 65
    Haus 27
    14163 Berlin
    +49 30 838 62618
    fortpflanzungsklinik@vetmed.fu-berlin.de

    Abstract / Zusammenfassung

    The objective of the study was to determine concentrations of ceftiofur derivatives after subcutaneous application of ceftiofur hydrochloride in cows with retained fetal membranes. Concentrations of ceftiofur derivatives detected as desfuroylceftiofuracetamide were determined in blood serum, endometrium, caruncles, cotyledons, and lochia during 72 h. After induction of parturition, 2 primiparous and 4 multiparous cows having retained fetal membranes for at least 12 h were studied. All cows received 3 consecutive injections (C1 to C3; 24 h apart) of 1-mg ceftiofur equivalents per kilogram of body weight as ceftiofur hydrochloride sterile suspension. Samples of blood, endometrium, caruncles, cotyledons, and lochia were collected immediately before each injection (0 h) and again at 4, 12, and 24 h after C1, C2, and C3. Blood samples were collected from coccygeal vessels. Caruncles were removed from the uterine lumen by manual extirpation and separated from cotyledons. Endometrial tissue (0.5 g) was collected by using Kenny's biopsy apparatus. For all samples, concentrations of potentially active ceftiofur derivatives were quantified using an HPLC assay. Within 2 h (serum), 4 h (endometrium), and 12 h (caruncles, cotyledons, lochia) after C1 and during the entire study period, mean concentration of ceftiofur derivatives exceeded the reported minimum drug concentrations required to inhibit the growth of 90% of isolates for relevant bacteria such as Escherichia coli, Fusobacterium necrophorum, and Arcanobacterium pyogenes. Only in single samples did concentrations decrease temporarily below the reported minimum drug concentrations required to inhibit the growth of 90% of isolates.