Wskazniki przemiany bialkowej w surowicy krwi lisic polarnych w zaleznosci od wieku zwierzat

The aim of the research was to determine values of selected parameters of protein metabolism and enzyme activities in blood serum of female polar foxes of different ages after the post-reproduction and post-lactation recovery period. During the experiment, 50 healthy fox vixens from a domestic breeding farm were examined. The animals were divided into 5 age groups (n = 10), from 1 until 5-years-of-age. In blood serum samples total protein, protein fractions, urea and creatinine concentration were determined along with the activities of the enzymes: aspartate aminotransferase (AST), alanine aminotransferase (ALT) and lactate dehydrogenase (LDH). There were no statistically significant age-dependent differences among biochemical parameters values in the blood of the experimental animals. The only thing noted was a tendency of an increased total protein level in the vixen’s blood with age and following the reproduction season.