EN
The aim of the study was to determine changes in the clinical image and biochemical and hematological blood parameters in pigs during the course of experimental hyperthyroidism. The research material included 10 pigs of the Wielka Bia³a Zwis³oucha breed. Experimental hyperthyroidism was produced by administering oral L-thyroxin at a dose of 20 µg/kg m.c. 1× day in 5 pigs for 8 weeks. The blood for biochemical and hematological investigations (AST, ALT, urea, creatinine, Na⁺, K⁺, Ca⁺⁺, Cal˙, Mg⁺⁺, TSH, FT₃, FT₄) was collected 4 times from the ear’s vein. Changes in swine behavior were observed: increase mobility, rapid tiredness and aggression. Hyperthyroidism caused a statistically significant increase in weight, temperature and heart rate and there was also a statistically significant increase in the amount of creatinine in blood plasma and thyroid hormone activity. There were no statistically significant biochemical and hematological blood parameters in either of the groups of swine.