Veterinární medicína, 2002 (vol. 47), issue 9
Mycobacterial infections in cattle in the Czech Republic during 1990-1999
I. Pavlik, L. Dvorska, L. Matlova, P. Svastova, I. Parmova, J. Bazant, J. Veleba
Vet Med - Czech, 2002, 47(9):241-250 | DOI: 10.17221/5831-VETMED 
In the nineties, cattle stocks gradually decreased from 3 506 222 head of cattle in 1990 to 1 657 337 head in 1999. Skin testing of cattle was carried out annually using bovine tuberculin. Animals for sale were also simultaneously tested with avian tuberculin. In records from 1991 to 1999 a total of 14 611 393 bovine tuberculin skin tests and 611 405 simultaneous avian tuberculin skin tests are registered. A total of 1 457 (0.01%) animals reacted positively with bovine tuberculin and 1 790 (0.29%) with avian tuberculin. In the period monitored a total of 7 268 274 head of cattle were slaughtered and given veterinary hygienic examinations. Statistical...
The last outbreak of bovine tuberculosis in cattle in the Czech Republic in 1995 was caused by Mycobacterium bovis subspecies caprae
I. Pavlik, F. Bures, P. Janovsky, P. Pecinka, M. Bartos, L. Dvorska, L. Matlova, K. Kremer, D. Van Soolingen
Vet Med - Czech, 2002, 47(9):251-263 | DOI: 10.17221/5832-VETMED
The last outbreak of bovine tuberculosis in cattle in the CzechRepublic was detected in 1995. Signs of diarrhoea, weight loss and occasional coughing appeared in one 14-year-old cow after giving birth for the thirteenth time. Two months after these symptoms had been observed, it had to be slaughtered and numerous tuberculous lesions were found in its lung tissue, including the pleura. Within three months after the confirmation of the infection and consecutive intra-vitam and post-mortem diagnostics, all 28 remaining head of cattle from the herd (nine cows, seven bulls, six heifers and six calves) and five pigs were slaughtered. Patho-anatomical...
Histopathology of the lymphatic system in ascitic broilers
Yang Sijun, Guo Dingzong, Yao Baoan
Vet Med - Czech, 2002, 47(9):264-269 | DOI: 10.17221/5833-VETMED
Histomorphologic changes of the lymphatic system of the liver and thoracic duct were examined. The diameters of lymphatic segments isolated from the thoracic ducts of ascitic and normal broilers at 32 to 37 days of age were measured using an optical micrometer measurement system. e histopathological picture of the segments of lymphatic tissue showed lymphatic cysts bilaterally along the posterior vena cava. The hepatic capsule manifested edema, thickening, and cellular proliferation. Microscopic changes in lymphatic vessels of the hepatic capsule include lymph embolism, and lymphatic plasma retention in lymphatic cysts. In some cases, distended...
Exposure to hypoxia injures tracheal epithelium (ultrastructural study)
V. Konrádová, J. Uhlík, L. Vajner, J. Herget, J. Adášková
Vet Med - Czech, 2002, 47(9):270-276 | DOI: 10.17221/5834-VETMED
The ultrastructure of the tracheal epithelium in rabbits exposed for 96 hours to normobaric hypoxia was studied. In rabbits placed for 96 hours in environment with increased temperature and humidity, the first phase of common response of goblet cells to injury, represented mostly by degeneration of the exhausted cells, was revealed. The decrease in O2concentration highly accelerated the reaction of the goblet cells. Due to the influence of high temperature, humidity and normobaric hypoxia, the second phase of the goblet cells' reaction, massive differentiation of new secretory elements accompanied with intraepithelial mucous glands' development,...