FEATURES OF LIPID ABSORPTION BY THE TISSUES OF THE MAMMARY GLAND OF COWS, GROWTH AND DEVELOPMENT OF THE FETUS IN THE DRY PERIOD

The article presents the results of research on the features of absorption of lipids in cows breast tissue and their use in growth and development of the fetus during the dry period. It was found that during the eighth or ninth months of fetal gestation, the content of total phospholipid fraction increased in the blood of cows by 1.30 times (p<0.01). The content of the total fraction of triacylglycerols from the first period to the second period of gestation of the fetus decreased by 1.13 times (p<0.05) and increased to the end of the late fetal period of gestation of the fetus. The content of phosphorylcholine throughout the gestation period decreased in their blood, and in the amniotic fluid increased to the end of the fifth month of gestation and decreased in the fetal period. In the period of dry breast tissue, the use of the total fraction of phospholipids during the dry period increased from 6.54% to 17.12%, 2.62 times (p<0.001), and the total fraction of triacylglycerols increased from 10.80% to 14.98%, 1.39 times, (p<0.01). The content of phosphorylcholine in amniotic fluid was significantly lower than in arterial blood of cows and fruits. At the end of the first period, the content of phosphorylcholine was 1.57 times, the second period – 1.41 times, the third period of gestation – 1.68 times, the fourth – 1.83 less. The content of phosphorylcholine in the blood of fruits was much higher than in the amniotic fluid. At the end of the first gestation period, its content in amniotic fluid was 1.91 times less than in the blood of the fruits, at the end of the second gestation period – 1.63 times less, at the end of the third period – 1.60 times and at the end of the fourth period of gestation – less in 1.44 times. During the eighth to ninth months of fetal gestation, the total phospholipid fraction in arterial blood of cows increased by 1.23 times, and in the blood of fruits, on the contrary, the content of the total fraction of phospholipids during the eighthninth months of gestation decreased by an average of 79.65 countries