Dynamics of Enzymatic Activity of Aspartate Aminotransferase in Liver Tissues of Goats, Depending on the Degree of Parasite Infestation

The article presents data of experimental studies of aspartate aminotransferase activity of liver enzymes of goats in Khizi - Khachmaz zone of Azerbaijan in different seasons of the year. The enzymatic activity was determined spectrophotometrically on a Specol 1500 spectrophotometer (Analitik Jena) at a wavelength of λ=540 nm. The maximum average increase in aspartate aminotransferase activity of liver enzymes of invasive goats in spring was 2.66 times, in summer, autumn and winter periods in 2.03, 1.47 and 1.37 times, in comparison with the liver tissues of practically healthy animals. The maximum value of aspartate aminotransferase activity of liver enzymes of goats invaded by nematodes was noted in spring and summer, and minimal in autumn and winter, reaching values of: 102.5 ± 6.5; 78.3 ± 4.3 and 56.5 ± 2.3; 52.8 ± 1.3 U/L, respectively.