Tadeusz Rotkiewicz

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Zearalenone (ZEA) is a macrocyclic lactone, estrogenic, diet-depending and fusaric micotoxin, which is produced on many kinds of cereals and feeds in the favourable conditions of humidity and temperature. The structure of ZEA is similar to the structure of estrogens and it enables binding to the estrogenic receptors. The stimulation of protein synthesis in(More)
The aim of the study was to investigate the influence of administration of probiotic bacteria on morphology of the gastrointestinal tract, liver and pancreas. The experiment was performed on 15 piglets at the age from 3 to 35 days, intragastrically administered with Bifidobacterium breve, B. animalis, and Lactobacillus acidophilus bacteria. In all piglets(More)
The aim of the study was to verify whether an increased supply of vitamins E and C prevents the detrimental effects of ozone on the testes. The experiment was performed on 5-month-old rats exposed to ozone (0.5 ppm) for 50 days (5 h daily). Simultaneously, the animals were injected with the vitamins in 5-day intervals and at different doses (0.5, 1.5, 4.5,(More)
Comprehensive serological and histopathological examinations of 47 free living European bison (Bison bonasus Linnaeus, 1758) were performed. Of these animals, 36 were serologically positive due to Coxiella burnetii, which confirmed the presence of Q fever epizootic foci in this population of wild animals in Poland. The presence of multiple foci of(More)
This study evaluated the morphology and immunohistochemistry of 85 canine cutaneous histiocytic tumours. The tumours were classified morphologically as either canine cutaneous histiocytomas (71 tumours) or canine cutaneous histiocytic sarcomas (14 tumours). The immunohistochemical analysis was conducted on paraffin sections using an antibody panel (against(More)
Studies were carried out on dead hens from a commercial farm of layer hens. Sections of skin from the region of the breast and under the wings with changes following mite bites were taken for histopathological examinations. In the histopathological preparations hyperkeratosis of epidermis and pachydermatosis were ascertained. Numerous lymphocytic cells(More)
Enrofloxacin is a synthetic chemotherapeutic agent from the class of the fluoroquinolones that is widely used to treat bacterial infections in animals. Fluoroquinolones cause severe lesions in articular-epiphyseal cartilage complexes of growing mammals. The aim of the present study was to determine whether enrofloxacin has chondrotoxic, dose- and(More)
Fibromuscular dysplasia (FMD) is a group of nonatherosclerotic, noninflammatory diseases of blood vessels with unknown aetiology. In our study, FMD was diagnosed in blood vessels in samples taken from kidneys, liver and lung of broiler chickens. The FMD occurred during rearing in 8 of 108 broiler chickens examined for the effects of intensive rearing on(More)
Ultrastructural alterations of the liver and kidneys of cockerels exposed to 100 ppm of cadmium chloride (CdCl2) and subsequent interaction with an organophosphorus compound (methylobromofenvinphos) were studied. Four groups, each consisting of 25 birds, included 100 ppm of CdCl2 in drinking water for 4 weeks (Group A), 100 ppm of CdCl2 for 4 weeks followed(More)