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An experiment was performed on 120 growing blue foxes (Alopex lagopus), 60 animals per group. Control group (C) was offered traditional diets prepared from thawed components while the experimental (E) was offered a pulp obtained from mixing dry pulverized components (animal meals, ground wheat,fat, witamin-mineral mix), with water 5 h prior to feeding. The body weight of foxes was recorded, and fur quality assessed based on live measurements and pelt quality evaluation. The diets were monitored for microbial contamination. The effects of diets on the overall health of animals were estimated based on blood biochemical and morphological parameters as well as anatomopathological changes of the digestive tract and internal organs. It was found that the risk of microbial contamination was lower in experimental diets, compared to conventional ones. Experimental feeding had no influence on the final body weights of foxes, but had positively affected fur quality (P<0.01). No negative impact of experimental diets on the health status of animals was observed.
Preliminary study on the relation between polar vixens’ temperament type and the values of selected physiological indicators and cortisol level in the blood serum The aim of this study was to examine whether there is a correlation between temperament type of polar foxes females, determined with the behavioral tests, and the level of selected physiological indicators and the level of cortisol in blood serum. In the result of conducted studies, there were no differences found between the number of breaths or the number of heartbeats in animals of different temperament types. It was found a higher body temperature in vixens with aggressive temperament compared with the vixens of trustful temperament. The difference was statistically significant (p<0.05). The level of cortisol in the blood serum of aggressive and fearful foxes was higher compared with trustful animals. The observed trend was statistically confirmed (p<0.01). In conclusion it can be said that the study of body temperature and the cortisol level in a blood serum of vixens can be a complementary method to evaluate its suitability as a breeding animals. Full verification of observed dependencies requires confirmation from greater material.
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