Association of β-lactoglobulin genotypes in Roma ewes with hematological blood parameters

The authors presented the haematological blood parameters of Romanov breed sheep and their association with genotypes according to the β-lactoglobulin locus. Blood plays a significant role in the body as metabolism is carried out. It delivers nutrients and oxygen to the cells of the body organs and removes metabolic waste products and carbon dioxide. The intensity of the metabolic processes can be judged from haematological data. Since blood enzymes, their activity, metabolic levels, and biochemical adaptation are encoded in their genes, the authors believe that the biochemical composition of blood in animals is, to a certain extent, related to their breeding and productive qualities. Identifying patterns of relationship and influence of genetic factors in breeds of different animals is one of the main tasks in the study of breeding features and further improvement and control of breed peculiarities of animals. For our analysis, 40 blood samples were taken from Romanov breed sheep for haematological tests, DNA extraction and PCR. DNA technology in conjunction with other factors should be used to improve the breeding process and the productive traits of the breeds. The haematological status of sheep has been examined on a PCE-90VET (HTI, USA) haematological analyser. The clinical and haematological parameters of Romanov breed sheep of different genotypes indicate high adaptation plasticity and a high level of metabolic processes occurring in the body of animals. The authors found that homozygous β-Lg A/A sheep had 1.5 times the number of leukocytes in the blood compared to heterozygous β-Lg A/B animals.