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Seasonal Occurrence and Its Effect on Thyroid-Hormone Concentrations in Blood-Serum of German-Shepherd, Dachshunds and Their Health-Status

TUCKOVA M, FIALKOVICOVA M, BARANOVA D, BEKEOVA E, KOZAK M, PALENIK L
Veterinarni Medicina 40, 1995, 249-252

A relatively frequent prevalence of dermatoses in summer has drawn our attention. Dermatoses of endocrine origin occur very often. We have noticed the deterioration of skin changes in animals with hypothyroidism. Bubenik et al. (1983), Webster et al. (1991), Reiter et al. (1988) reported that changes in concentrations of thyroid hormones were found in fallow-deer, sheep and hamsters due to the effect of temperature and season. Based upon this knowledge we have decided to observe the health status and function of the thyroid gland in two randomly selected groups of various size dogs - German shepherd and dachshund during four seasons. We observed following parameters: concentration of triiodothyronine (T-3), thyroxine (T-4), cholesterol (Chol) and total lipids (TL) in the blood serum, average temperatures in individual seasons. Blood was always withdrawn fasting in the morning from vena antebrachii. Concentrations of T-3 and T-4 were determined by the commercial kits RIA-test-T-4 and RIA-test-T-3 (Huma-Lab, Kosice, Slovak Republic). The levels of cholesterol and total lipids were determined by the BIO-LA-tests (Lachema, Brno, Czech Republic). March, April, May were included into spring season


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