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O presente estudo objetivou descrever as alterações físico-químicas da urina, identificando os agentes etiológicos presentes na urina de matrizes descartadas sem causa definida. De 35 amostras examinadas, 16 (45,7%) foram positivas para presença de sangue e/ou nitrito (positivo para infecção urinária, IU); 8 (50%) tiveram coloração amarela escura e 6 (37,5%) coloração amarela clara; 2 (12,5%) amostras não apresentavam alteração. Dez amostras tinham odor amoniacal, das quais 7 foram positivas para IU. Também houve prevalência de urinas turvas e turvas com grumos, bem como de pH normal (5,5 - 6,5) e densidades maiores que 1,012. Presença de microrganismos foi verificada em 91,5% das 35 amostras examinadas, sendo a Escherichia coli (45,7%), a bactéria com maior prevalência. Em 11 amostras (31,4%), verificou-se a presença de Actinobaculum suis; destas, 4 foram simultaneamente positivas para IU e Actinobaculum suis; 7 foram negativas para IU, observando-se porém, a presença de Actinobaculum suis pelo exame de imunofluorescência indireta. The present study describes the physical-chemical alterations of the urine and identifies etiological agents of the urine of 35 sows. Out of 35 samples, 16 (45.7%) were positive for nitrite and/or blood, positive for urinary infection (UI); eight (50%) were dark yellow and six (37.5%) had clear yellow coloration; in two (12.5%) samples did not show any alteration. Ten samples had ammonia smell, seven among them were positive for UI. Other findings were turbid urine and turbid with grumes, normal pH values (5.5 - 6.5) and densities higher than 1012. Microorganisms were isolated in 91.5% out of 35 urine samples, with prevalence of Escherichia coli (45.7%). In 11 samples (31.4%) Actinobaculum suis was isolated, four were simultaneously positive for UI and Actinobaculum suis; seven were negative for UI, but it was observed the presence of Actinobaculum suis in the indirect immunofluorescence

Aspectos físicos químicos e microbiológicos da urina de matrizes suínas descartadas