Brucelose bovina: observaçöes sobre tratamento experimental / Bovine brucellosis. Observations on experimental treatment

Sendo a brucelose bovina enfermidade causadora de graves prejuízos em saúde animal, economia pecuária e saúde pública, seu controle terapêutico reveste-se da maior importância. Do ponto de vista prático, os resultados do presente trabalho sugerem que, em rebanho em que há brucelose, a vacinaçäo do gado sadio, mais a vacinçäo e o tratamento com antibiótico dos animais brucélicos em isolamento podem ser favoráveis

Bovine abortion associated with Anaplasma marginale.

During the period from June 1974 to June 1975, five bovine fetuses between seven to nine months old were received for necropsy from four different counties of the S. Paulo State, Brazil. All of them were from brucellosis-free herds. Necropsy revealed slight liver enlargement generally accompanied by capsular petechial hemorrhages. Enlargement and congestion of the spleen, epicardial and endocardial petechiae were present in three fetuses and one of them had lungs with some hemorrhagic lobules. Cardiac blood films of all the fetuses stained by the Pappenheim's panoptic method showed Anaplasma marginale in two to 20% of red corpuscles. When stained with acridine orange and immunofluorescent methods blood films of the first fetus specifically showed A. marginale.

A rapid method for the diagnosis of equine virus abortion.

Smears and imprints were made from the liver of 27 equine fetuses, believed to have aborted as a result of Equine Virus Abortion (EVA) infection. Several different fixatives and staining techniques were employed for the demonstration of typical intra-nuclear inclusion bodies in these preparations, and the following conclusions were reached. Methanol proved to be the best fixative and Pappenheim's panoptic method was the best staining technique, giving good contrast and definition of the inclusion bodies. Cytological methods provided a simple and rapid means of diagnosis, but histological sections provided evidence of lesions which was most useful when inclusion bodies were very difficult to find. However, cytological methods proved better than histological sections for the demonstration of EVA intranuclear inclusion bodies.

The supracloacal chromolipoid body of the black vulture (Coragyps atratus): anatomical, histological and histochemical considerations.

During histological and physiological investigations of black vultures (Coragyps atratus) dissection revealed the presence of an "organ", the supracloacal chromolipoid body, which has no counterpart among other warm blooded animals. The organ occurs in both sexes and in birds of different ages. It is located in the median sagittal plane dorsal to the cloaca. It is enveloped by a smooth muscle-connective tissue capsule and has a rich blood supply. The supracloacal body is yellow-brown in color being composed chiefly of islands of pigment cells.Histochemically, the pigment is a chromolipoid as defined by Ciaccio.

Naturally occuring histoplasmosis in guinea pigs.

Histoplasmosis naturally occurring in laboratory guinea pigs is described in its clinical, necropsy, histological and mycological aspects.The animals if adult show a chronic disease with progressive emaciation and lameness of the hind legs. The young below three months of age died in 2 to 4 weeks presenting ruffled fur, great dorsal curvature and sometimes closed eyelids and catarrhal conjunctivitis. At necropsy the principal lesions were ulcerative gastritis, hemorrhagic and catarrhal enteritis, enlarged spleen and mesenteric lymph nodes. Sometimes the liver, lungs, mediastinal lymph nodes and other organs showed lesions. Histological and mycological demonstration of the fungus completed the diagnosis and the surviving animals were burned and sanitation measures instituted. Histological evidence of histoplasmosis in a cow's lung from the area from which the grass was obtained for the feeding of the guinea pigs suggests an epidemiological link. Efforts will be made to isolate and demonstrate H. capsulatum in wild animals on the same area.