The residue levels of selected fluoroquinolones, sulfonamides and tetracyclines in 143 animal dung samples collected in 2007 from large-scale livestock and poultry feedlots in 8 provinces were determined by using ultrasonic extraction and liquid chromatography. Recoveries from spiked pig dung samples (spike level=1mg/kg) ranged from 73.9 to 102.0% for fluoroquinolones, from 81.6 to 92.3% for su...

OBJECTIVE We evaluated the epidemiology of antimicrobial resistance in enterococci from animal farms and the potential relation of resistance to antimicrobial use. METHODS Enterococci from faecal samples from 18 beef cattle, 18 dairy cattle, 18 swine, 13 chicken, and eight turkey farms were prospectively evaluated over a 6 year period from 1998 to 2003. RESULTS We evaluated 1256 isolates of...

In this study, flow cytometry was evaluated for the determination of the minimal inhibitory concentrations (MIC) of seven antibacterial agents (enrofloxacin, ciprofloxacin, gentamicin, streptomycin, chloramphenicol, oxytetracycline, and tylosin) on Mycoplasma (M.) agalactiae. Flow cytometry was able to detect M. agalactiae inhibition from 6 h postincubation, although it seems that definitive MI...

A derivative spectrofluorimetric method for simultaneous determination of enrofloxacin (EFX) and ciprofloxacin (CFX) in cow milk was developed. The sample preparation based on rotating disk sorptive extraction (RDSE) using Oasis HLB® as phase followed by desorption the analytes with methanol. final extracts were evaluated spectrofluorimetry.

Haemophilus parasuis is an early colonizer of the porcine upper respiratory tract and is the etiological agent of Glasser's disease. The factors responsible for H. parasuis colonization and systemic infection are not yet well understood, while prevention and control of Glasser's disease continues to be challenging. Recent studies on innate immunity to H. parasuis have demonstrated that porcine ...

This study investigated the occurrence and risk assessment of ten pharmaceutical products two herbicides in water rivers from Doce river watershed (Brazil). Of 12 chemicals studied, (acyclovir, amoxicillin, azithromycin, ciprofloxacin, enrofloxacin, fluoxetine, erythromycin, sulfadiazine, sulfamethoxazole, glyphosate aminomethylphosphonic acid) had a 100% detection rate. In general, total conce...

externa. History. The patient, an outdoor farm dog that enjoyed swimming in ponds, had been treated for recurrent bacterial otitis externa for 2 years. Previous cultures revealed moderate growth of Staphylococcus intermedius (S pseudointermedius) that was determined to be sensitive to all antibiotics tested. On 4 occasions, treatment with a compounded combination of enrofloxacin and fluocinolon...