ABSTRACT
Two strains of Nocardia spp. were isolated from bovine milk of two individual bulk tank. Molecular identification classified the strains as Nocardia farcinica and Nocardia cyriacigeorgica. The thermorresistance to boiling of the isolates was carried out and was observed bacterial growth after boiling. Our findings indicate the potential risk of pathogen transmission to humans through contaminated milk with Nocardia spp.
Subject(s)
Cattle , Bacterial Growth , Breast-Milk Substitutes , Food Preservation , Mastitis, Bovine , Nocardia/isolation & purification , Streptococcus bovis/isolation & purification , Cattle , Food Samples , Methods , Milk , VirulenceABSTRACT
Routine diagnosis methods used in bovine mastitis were studied in 55 mares in lactation. The findings of strip cup test, California Mastitis Test-CMT, electronic somatic cell count-CCS, microbiological culture, and in vitro antimicrobial susceptibility profile of isolates were discussed. Streptococcus spp., Staphylococcus spp, and enterobacteria were the most common microorganisms isolated in health and CMT-positive mammary glands. Staphylococcus aureus and Arcanobacterium pyogenes were identified in two mares presenting clinical mastitis. Mean somatic cell count of eight mares without presence of microorganisms in milk was 247.57x10³/mL and 1.621,86x10³/mL in 47 mares with positive microbiological culture. Moderate concordance (63.8 percent) between positive reactions in CMT (1 to 3+) and microbiological culture was observed. Amicacin (78.9 percent), ceftiofur (74.7 percent), sulpha-trimetoprim (69,0 percent) and norfloxacin (69.0 percent), were the most effective drugs, while resistance of isolates was mainly observed against penicillin (64.8 percent), gentamycin (35.2 percent), azithromycin (35.2 percent), enrofloxacin (28.2 percent), and florfenicol (28.2 percent).
Subject(s)
Animals , Female , Mastitis/diagnosis , Mastitis/therapy , Mastitis/veterinary , Cell Count/veterinary , HorsesABSTRACT
An uncommon outbreak of mastitis caused by Arcanobacterium pyogenes in 26 cows is reported. The epidemiological findings, clinical signs, microbiological exams, somatic cell count, in vitro susceptibility profile of strains, efficacy of intramammary treatment and control measures were discussed. Florfenicol (96.2 percent), cefoperazona (92.3 percent), cefaloxin (84.6 percent) and ceftiofur (84.6 percent) were the most effective antimicrobials, and neomicin (27.0 percent) and enrofloxacin (17.4 percent) the least effective antimicrobials.
Subject(s)
Animals , Cattle , Bacteria , Mastitis, Bovine , Membranes , Disease Outbreaks/veterinary , Bacterial Infections/veterinary , LactationABSTRACT
The uncommon occurrence of bovine mastitis by Pasteurella multocida is reported in nine cows. Mammary pasteurellosis was predominantly diagnosed predominantly in clinical cases, in dairy cows milked in the presence of calves. Low interference of immunosuppressive or predispose factors and absence of pulmonary signs were observed in animals. In vitro multiple drug resistance of isolates was observed to three or more conventional antimicrobials, especially with use of tetracycline and gentamicin. Epidemiologic findings, clinical signs, and antimicrobial profile were discussed in nine cases of bovine mastitis caused by P. multocida.
Subject(s)
Animals , Female , Cattle , Drug Resistance, Microbial , Pasteurella Infections/veterinary , Mastitis, Bovine/microbiology , Cattle , Microbial Sensitivity TestsABSTRACT
Relata-se a ocorrência de graves sintomas de mastite hiperaguda em vaca, causada por Klebsiella pneumoniae, na terceira semana de lactação. Descrevem-se aspectos epidemiológicos, sintomas clínicos, procedimentos de diagnóstico microbiológico, conduta terapêutica e medidas de controle.
Subject(s)
Animals , Acute-Phase Reaction , Klebsiella pneumoniae/isolation & purification , Lipopolysaccharides , Mastitis, Bovine/diagnosisABSTRACT
This work describes a malformation in one newborn female bovine, with two faces and two skull fused, showing one single head. Duplications of the nasal and oral structures, tetraofthalmy, two brains, one single cerebellum, and pons were observed. The right thyroid was hypertrophic and the other organs had normal morphology. Every change observed in this case was compatibles with diprosopus.