Leptin and its relationship with lipid metabolism in repair pigs of different breeds

The influence of the breed of repair pigs on lipid metabolism and the relationship of its intensity with the level of leptin was studied. The object of the study was repair pigs of Duroc, Yorkshire and Landrace breed, selected according to the results of bonitation for herd reproduction. It is established that in durkees lipid metabolism is mainly focused on energy reproduction, and in Yorkshires and landraces-on deposition in fat depots. The direction of lipid metabolism (energy or reserve) in the body of repair pigs is associated with the level of leptin, which realizes its biological effects significantly affecting the concentration of triglycerides in the blood (leptin - TAG in durkees r=-0.42±0.15; Yorkshires r=0.36±0.09; landraces r=0.66±0.14) and LDL-C (leptin - HC-LDL in durkees r=0.41±0.14; Yorkshires r=0.32±0.1; Landrace R=0.53±0.1).