Myonecrosis caused by Clostridium septicum in a horse from Southern Brazil / Mionecrose causada por Clostridium septicum em um cavalo do sul do Brasil

Clostridial myonecrosis is a highly fatal infectious disease of the muscle that is caused by pathogenic clostridia. When it occurs in equine muscle, the infection can cause a variety of clinical signs. The present report described a case of acute myonecrosis caused by Clostridium septicum in a horse, which had a favorable clinical evolution. A 6-year-old mare was admitted to a veterinary hospital due to increased volume and lameness in the left pelvic limb after an intramuscular injection of an anti-inflammatory drug. The diagnosis of myonecrosis caused by C. septicum was based on clinical and laboratory findings. The animal showed significant improvement after 5 months of treatment and was discharged from the hospital. There is very limited information regarding myonecrosis caused by C. septicum in horses in Brazil; our study showed that early diagnosis and prompt appropriate treatment can ensure significant improvement and recovery of affected animals.

Mionecroses clostridiais são doenças altamente fatais, causadas por uma ou mais espécies de Clostridium sp. patogênicos. Entretanto, no músculo equino, a infecção pode produzir uma variedade de lesões e sinais clínicos. O presente relato descreve um caso de mionecrose aguda em um cavalo causada por Clostridium septicum, que apresentou uma evolução clínica favorável. Uma égua de seis anos foi internada em um hospital veterinário devido a um aumento de volume e claudicação no membro pélvico esquerdo, observado após injeção intramuscular de anti-inflamatório. O diagnóstico de mionecrose por C. septicum foi baseado nos achados clínicos e laboratoriais. Houve uma melhora significativa do animal após cinco meses de tratamento, permitindo que o mesmo fosse liberado do hospital veterinário. Considerando que as informações sobre C. septicum causadores de mionecroses em cavalos no Brasil são muito limitadas, este relato demonstra que o diagnóstico precoce e a implementação adequada do tratamento podem garantir uma melhora significativa e a recuperação dos animais afetados.

Avaliação da frequência de pneumonia enzoótica suína em granja através da monitoria de abate, clínica e laboratorial / Evaluation of the frequency of swine enzootic pneumonia in one farm based on slaughterhouse, clinical and laboratory monitoring

Background: Swine enzootic pneumonia (SEP), caused by the bacterium Mycoplasma hyopneumoniae, is one of the main respiratorydiseases of pigs. The purpose of this study was to evaluate the frequency of SEP in one farm with an independent production system,low level of technification and high losses in the meat packing plant, based on slaughterhouse, clinical and laboratory monitoring.Materials, Methods & Results: This study consisted of three monitoring steps, divided into 3 periods: P1, P2 and P3. In the first step ofthe study, slaughterhouse reports were analyzed and slaughtering was monitored at one meatpacking plant in Santa Maria, RS, Brazil.The second step of the study started by drawing up a profile of the farm that supplied the pigs to the aforementioned slaughterhouse,after which clinical monitoring was performed on three occasions. The third step of the study (laboratory monitoring) involved collecting lung fragments containing suspected SEP lesions from the meatpacking plant and subjecting them analysis. The average measuredenzootic pneumonia (EP) in P3 was 38.54% (P 0.05) between P1, P2 and P3. As for the mean frequency of pulmonary hepatization (PH), P3 was48.80% higher (P 0.05) between the 3 evaluated periods. On the other hand, in the finishingperiod (FP), the frequency of coughing and sneezing was 37.56% (P < 0.05) higher in P1 than in P3. The frequency of coughing and...

Avaliação da frequência de pneumonia enzoótica suína em granja através da monitoria de abate, clínica e laboratorial / Evaluation of the frequency of swine enzootic pneumonia in one farm based on slaughterhouse, clinical and laboratory monitoring

Background: Swine enzootic pneumonia (SEP), caused by the bacterium Mycoplasma hyopneumoniae, is one of the main respiratorydiseases of pigs. The purpose of this study was to evaluate the frequency of SEP in one farm with an independent production system,low level of technification and high losses in the meat packing plant, based on slaughterhouse, clinical and laboratory monitoring.Materials, Methods & Results: This study consisted of three monitoring steps, divided into 3 periods: P1, P2 and P3. In the first step ofthe study, slaughterhouse reports were analyzed and slaughtering was monitored at one meatpacking plant in Santa Maria, RS, Brazil.The second step of the study started by drawing up a profile of the farm that supplied the pigs to the aforementioned slaughterhouse,after which clinical monitoring was performed on three occasions. The third step of the study (laboratory monitoring) involved collecting lung fragments containing suspected SEP lesions from the meatpacking plant and subjecting them analysis. The average measuredenzootic pneumonia (EP) in P3 was 38.54% (P < 0.05) higher than in P1 and 29.79 higher than in P2. The mean frequency of pulmonaryemphysema (PE) in P3 was 59.13% (P < 0.05) higher than in P1 and 48.04% higher than in P2. The mean number of lung adhesions(LA) did not differ statistically (P > 0.05) between P1, P2 and P3. As for the mean frequency of pulmonary hepatization (PH), P3 was48.80% higher (P < 0.05) than P1 and 41.78% higher than P2. With regard to the mean frequency of craniodorsal lung lesions (CLL), P3was 48.26% higher (P < 0.05) than P1 and 40.77% higher than P2. The mean frequency of disseminated lesions (DL) and the pneumoniaseverity index (PSI) showed no statistical difference (P > 0.05) between the 3 evaluated periods. On the other hand, in the finishingperiod (FP), the frequency of coughing and sneezing was 37.56% (P < 0.05) higher in P1 than in P3. The frequency of coughing and...(AU)