RESUMO: Samambaias (Pteridium spp.) têm sido associadas à intoxicação em bovinos e causam a hematúria enzoótica bovina (BEH), caracterizada por hematúria intermitente, anemia e má condição corporal. As proteínas de fase aguda ainda não foram avaliadas em detalhes na BEH. Assim, o objetivo desta investigação foi determinar as concentrações séricas de haptoglobina, de parâmetros bioquímicos (proteína total, albumina, ureia, creatinina, aspartato aminotransferase, gama glutamil transferase e creatina quinase), hemograma completo, fibrinogênio e urinálises em 50 vacas Nelore provenientes de fazendas com histórico de ingestão crônica de samambaia natural. Vinte e nove vacas apresentaram macrohematúria e 21 microhematúria. Das 29 vacas com macrohematúria, 13 apresentavam anemia e número incontável de eritrócitos por campo na urinálise. As vacas apresentaram proteinúria no exame químico da urina. As concentrações medianas de haptoglobina apresentaram aumento de 3,9 vezes em 47 vacas com BEH, sugerindo uma resposta inflamatória crônica. O número de leucócitos totais e neutrófilos segmentados estava acima dos intervalos de referência para oito e 23 vacas, respectivamente. Além da inflamação, existe a hipótese de que o princípio ativo da samambaia possa causar hemólise intravascular. Portanto, poderia haver uma reação de fase aguda maior nas vacas, mas possivelmente parte da haptoglobina estava sendo removida à medida que era produzida. As vacas com BEH deste estudo apresentaram elevação sérica de haptoglobina, creatina quinase, hiperglobulinemia e anemia, contribuindo para a compreensão da resposta inflamatória crônica que pode estar associada às lesões neoplásicas na bexiga urinária causadas pela ingestão prolongada e repetida de Pteridium spp. RESUMO spp , (BEH) intermitente corporal Assim proteína total albumina ureia creatinina aminotransferase quinase quinase) completo 5 natural 2 microhematúria 1 urinálise urina 39 3 9 3, 4 respectivamente inflamação intravascular Portanto produzida (BEH

ABSTRACT: Bracken ferns (Pteridium spp.) have been associated with intoxication in cattle and is the cause of bovine enzootic hematuria (BEH) characterized by intermittent hematuria, anemia, and poor body condition. Acute phase proteins have not previously been investigated in detail in BEH. Thus, this investigation determined serum concentrations of haptoglobin, selected hematological (complete blood count and fibrinogen), biochemical (total serum protein, albumin, urea, creatinine, aspartate aminotransferase, gamma glutamyl transferase, and creatine kinase), and urinary analytes, in 50 Nelore cows from farms with history of natural bracken fern chronic ingestion in the southern region of Brazil. Twenty-nine cows had macrohematuria and 21 microhematuria. From the 29 cows with macrohematuria, 13 had a countless number of erythrocytes per high power macroscopic field and anemia. All cows had dipstick proteinuria. Median haptoglobin concentrations were elevated for 47 BEH cows with a 3.9-fold increase, suggesting a chronic inflammatory response while the number of total leukocytes and segmented neutrophils were above the reference intervals for 14 cows. Besides inflammation, there is a hypothesis that bracken fern could cause hemolysis in the circulation. Therefore, there could be a larger acute phase reaction but much of the haptoglobin was being removed as it was being produced. In our study, increases in haptoglobin, creatine kinase, hyperglobulinemia and anemia were found in cows with BEH, contributing to the understanding of the chronic inflammatory response which could be associated with neoplastic lesions in the urinary bladder caused by long-term and repeated ingestion of Pteridium species. ABSTRACT spp. spp (BEH condition Thus complete fibrinogen, fibrinogen , fibrinogen) protein albumin urea creatinine aminotransferase transferase kinase kinase) analytes 5 Brazil Twentynine Twenty nine 2 microhematuria 1 proteinuria 4 3.9fold 39fold fold 3.9 3 9 increase inflammation circulation Therefore produced study longterm long term species 9fold 39 3.

ABSTRACT Biosecurity, cleaning and disinfection of swine and poultry facilities are fundamental for the reduction of pathogenic microorganisms of importance for public and animal health. The objective of this work was to compare the levels of active ingredient described on the label and the real levels detected in high-performance liquid chromatography (HPLC) of two disinfectants., then evaluate the antimicrobial activity since, following the Germicidal Sanitizing Action and Disinfectant Detergent (Official Method AOAC 960.09) in four different dilutions with the presence of 3% organic matter during 15 min of contact, against Salmonella Heidelberg and Salmonella Typhimurium (ST). The product “A” presents active levels of agreement according to the label. The content of quantified assets for product “B” was lower than that recorded on the label. The disinfectant “A” was effective in microbiological evaluation while the disinfectant “B” had microbiocidal activity compromised by the deficit of assets.

Resumo Um surto de abortamento com 75 abortos ocorreu em um rebanho fechado de vacas leiteiras da região centro Leste do Paraná entre dezembro e abril de 2017. Para chegar ao diagnóstico, fragmentos de órgãos foram coletados de um feto abortado e submetidos para histopatologia; e amostras de sangue foram coletadas de 1 natimorto, de 4 fetos abortados e de 9 cães da propriedade, para detecção de anticorpos pela reação de imunofluorescência indireta (RIFI). Foram encontradas encefalite multifocal não supurativa, hepatite periportal e miocardite linfoplasmocitária multifocal. Anticorpos anti-Neospora foram detectados em todos os fetos abortados e em 5 dos 9 cães. DNA de N. caninum foi detectado no tecido cerebral de um dos fetos abortados. Amostras sanguíneas de 340 vacas e 146 novilhas mostraram uma soropositividade para N. caninum de 33,5% e 30,8%, respectivamente. Nesse rebanho fechado, o parasita foi introduzido possivelmente pelas fezes de cães domésticos ou selvagens infectados que habitam a propriedade.

Abstract Between December 2016 and April 2017, a spate of abortions occurred in a closed dairy herd from the central eastern region of Paraná, Brazil, in which 75 cows aborted. To identify its cause, organ fragments were collected from an aborted fetus for histopathology, and the blood samples from a stillborn, 4 aborted fetuses, and 9 farm dogs for indirect fluorescent antibody technique (IFAT). These tests found multifocal non-suppurative encephalitis, periportal hepatitis, and multifocal lymphoplasmacytic myocarditis, and detected anti-Neospora antibodies in all aborted fetuses, and in 5 of the 9 dogs. DNA of Neospora caninum was detected in the brain tissue of an aborted fetus. Blood samples of 340 cows and 146 heifers showed 33.5% and 30.8% seropositivity, respectively. In this closed herd, the parasite was probably introduced by infected domesticated or wild carnivores inhabiting the farm, through the infective oocysts present in their stool.

ABSTRACT Ammonium quaternary compounds are widely used in poultry and swine production as disinfectants in the control of pathogens. They act on gram-positive bacteria, gram-negative bacteria, enveloped fungi and viruses. However, in some conditions of pH and presence of organic matter can be inactivated. This study evaluated the action of ammonium quaternary compounds at 1:1,000 and 1:2,000 dilutions against Salmonella enterica serovarTyphimurium and Salmonella enterica serovar Enteritidis in the presence of three different organic matter simulators, fetal bovine serum, skim milk and whole milk concentration of 1, 3, 5, and 7% and at pH 6 and 9, with 15 min of contact. It was possible to verify that the organic matter simulators adjusted in the same conditions of contact time and percentage, in the in vitro tests, presented different results and the fetal bovine serum did not inactivate the disinfectant. However, the best result against S. Typhimurium and S. Enteritidis was obtained at pH 6 at the dilution of 1:1,000 in all organic matter simulators.

A intoxicação por larvas de mosca serra (ILMS) é uma hepatotoxicose aguda documentada em animais de fazenda na Austrália, Dinamarca e em países da América do Sul. É causada pela ingestão de larvas de insetos da subordem Symphyta, ordem Hymenoptera, conhecidos popularmente como mosca serra. Três espécies de moscas serra são relatadas como envolvidas na intoxicação. O inseto envolvido na ILMS australiana é Lophyrotoma interrupta (Pergidae); na Dinamarca a causa da ILMS é a ingestão de larvas de Arge pullata (Argidae) e nos países de América do Sul a ingestão de larvas de ainda outra espécie de mosca serra, Perreyia flavipes (Pergidae), é a causa de ILMS. Em todas essas áreas geográficas, a ILMS causa importantes perdas na pecuária. Em bovinos, como nas outras espécies afetadas, a doença tem um curso clínico breve e em muitos surtos os bovinos afetados podem ser encontrados mortos. Quando observados, os sinais clínicos incluem apatia, decúbito, tremores, movimentos de pedalagem e morte em 24-48 horas. Sinais neurológicos como agressividade, atribuídos à encefalopatia hepática, são também observados. Em casos com curso clínico mais protraído, pode ocorrer icterícia e fotodermatite. Achados de necropsia incluem ascite, petéquias e equimoses em superfícies serosas das cavidades torácica e abdominal e um fígado aumentado de volume e com acentuação do padrão lobular, e edema da parede da vesícula biliar. Em todas as necropsias de bovinos afetados, fragmentos do corpo e cabeças de larvas são encontrados nos pré-estômagos e, ocasionalmente, no abomaso. As principais lesões microscópicas são restritas ao fígado e consistem de necrose hepatocelular centrolobular (periacinar) a massiva. Na maioria dos lóbulos as áreas de necrose estendem-se até as tríades portais onde apenas algumas lâminas de hepatócitos viáveis permanecem. Leve a moderada necrose de linfócitos é observada nos tecidos linfáticos. Os surtos de ILMS ocorrem nos meses de inverno quando os estágios larvais estão em desenvolvimento. Peptídeos que contêm D-aminoácidos constituem os princípios tóxicos de cada uma das moscas serra envolvidas na ILMS. O octapeptídeo lofirotomina é a principal toxina nas larvas das moscas serra australianas e dinamarquesas e também ocorre em pequenas quantidades nas larvas da mosca serra sul-americana. O heptadecapeptídeo pergidina é a principal toxina das larvas da mosca serra sul-americana, enquanto que pequenas quantidades de pergidina foram encontradas nas outras duas espécies tóxicas de mosca serra. Durante o inverno de 2011 (Julho-Agosto) quatro surtos de ILMS foram diagnosticados no Estado do Rio Grande do Sul, Brasil. Os achados desses surtos são relatados aqui e é feita uma breve revisão da literatura sobre ILMS ao redor do mundo.

Sawfly larval poisoning (SLP) is an acute hepatotoxicosis documented in livestock in Australia, Denmark and in countries of South America. It is caused by the ingestion of the larval stage of insects of the suborder Symphyta, order Hymenoptera, commonly known as "sawfly". Three species of sawfly are reportedly involved in the toxicosis. The insect involved in Australian SLP is Lophyrotoma interrupta (Pergidae), in Denmark the cause of SLP is the ingestion of the larvae Arge pullata (Argidae), and in South American countries documented outbreaks of SLP were caused by the ingestion of yet another sawfly, Perreyia flavipes (Pergidae). In all geographical areas where it occurred, SLP causes important livestock losses. In cattle, as well as in other affected species, the disease has a short clinical course and in many outbreaks affected cattle can be found dead. When observed, clinical signs include apathy, recumbence, tremors, paddling movements and death in 24-48 hours. Neurological signs such aggressiveness attributable to hepatic encephalopathy are also observed. In cases with a more protracted course icterus and photodermatitis may develop. Gross findings included ascites, petechiae and ecchymosis over serosal surfaces of thoracic and abdominal cavities, and an enlarged liver that displays accentuation of the lobular pattern and edema of the gall bladder wall. Sawfly larval body fragments and heads are consistently found in the fore stomachs and occasionally abomasum of affected cattle. Main microscopic lesions are restricted to the liver and consist of centrolobular (periacinar) to massive hepatocellular necrosis. In most lobules necrotic areas extended up to the portal triads where only a few viable hepatocytes remain. Mild to moderate lymphocyte necrosis is seen in lymphatic tissues. Cases occur in the winter months when the larval stages of the sawfly are developing. D-amino acid-containing peptides have been found to be the toxic principle in each sawfly involved in SLP. The octapeptide lophyrotomin is the major toxin in the in the larvae of Australian and Danish sawflies and is present in small amounts in the larvae of South American sawfly. The heptadecapeptide pergidin is the main toxin in the South American sawfly while small amounts of pergidin have been found in the other two species of toxic sawfly. During the winter of 2011 (July-August) four outbreaks of SLP were diagnosed in the State of Rio Grande do Sul, Brazil. The findings in those outbreaks are reported here and a brief review of the literature regarding SLP around the world is provided.

West Nile virus (WNV) envelope glycoproteins preM/E were stably expressed in baby hamster kidney cells and tested as antigen in a fluorescent antibody assay for WNV antibodies. Sera from horses, mice and chicken immunized with an inactivated WNV vaccine and, less consistently, sera from horses acutely infected with WNV, reacted specifically with viral antigens present in preM/E-expressing cells.

O atropelamento por veículos automotivos contribui significativamente para as estatísticas de morte em cães. Entretanto, há poucos estudos sobre os aspectos patológicos reportados na literatura. Este artigo descreve 155 casos fatais de atropelamento por veículos automotivos em cães. Dos 155 cães atropelados, em 138 (89,0%) havia lesões que explicavam a morte ou a razão para a eutanásia desses cães. Essas lesões incluíram traumatismo espinhal-medular (43 [27,7%]), ruptura de órgãos parenquimatosos (40 [25,8%]), traumatismo cranioencefálico (28 [18,1%]), ruptura de órgãos ocos (16 [10,3%]), fratura de costelas com laceração de órgãos parenquimatosos (15 [9,7%]) e ruptura de diafragma com deslocamento de vísceras abdominais para a cavidade torácica (10 [6,4%]).

Motor vehicle-related trauma significantly contributes to death statistics of dogs. There are however few documented reports on the pathological aspects of such cases. This paper describes 155 fatal cases of dogs victimized by motor vehicle accidents. In 138 (89.0%) of the 155 dogs hit by motor vehicles there were lesions that could explain the death or reason for these dogs being euthanatized. These lesions included vertebrospinal trauma (43 [27.7%]), rupture of parenchymal organs (40 [25.8%]), cranioencephalic trauma (28 [18.1%]), rupture of hollow organs (16 [10.3%]), rib fracture with subsequent laceration of parenchymal organs (15 [9.7%]), and diaphragmatic rupture with displacement of abdominal viscera into the thoracic cavity (10 [6.4%]).