Vliv plemenné příslušnosti na hodnoty hematologických parametrů u kapra obecného

The aim of this thesis was to describe the effect of breed affiliation on the values of haematological parameters in selected breeds and interbreeds of common carp (Cyprinus carpio) and ornamental variety - koi carp (Cyprinus rubrofuscus). A total of 5 groups of fish were included in the experiment and 9 individuals were included in each group. Thus, a total of 45 common carp at one year of age. Each group represented one of the breeds or inter-breed hybrids studied. In the framework of this thesis, haematological parameters were determined in individuals of the AS breed, the synthetic line of Hungarian Mirror Carp (HSM) and hybrids of the breeds Ropšinský x Tatajský carp or Amur mirror carp x HSM. The fifth group was koi carp. The fish were reared in aquaria, where optimal and identical physico-chemical water parameters were ensured throughout the rearing period. The RBC, PCV, Hb, MCV, MCH, MCHC WBC, Lk and differential leukocyte count were determined from the blood samples collected. Based on the determined values and the results of statistical comparison, it is evident that there are statistically significant differences in RBC, PCV, Hb and WBC values between the compared groups. Individuals from the koi and HSM groups (lower values of RBC, PCV and Hb) differed exclusively from individuals from the AS and interbreed hybrids ROP x TAT and HSM x AL groups. On the other hand, the highest WBC value was determined in fish from the HSM group. Within the leukogram, significant differences were found in the percentages of lymphocytes and metamyelocytes, and only lymphocytes showed significant differences in the absolute values of individual white blood cell types. Even though the fish were reared under similar conditions throughout the experiment, it cannot be completely excluded that some secondary effects on some hematological parameters may have been caused by even very subtle changes and factors (difference in physical activity or water flow in the rearing tank, stress caused by the presence of other individuals, etc.)