[Changes in the ultrastructure and intensity of lipid synthesis in the adipocytes of subcutaneous fatty tissue of piglets following birth].

In the subcutaneous adipose tissue of new-born pigs (before taking up the colostrum) poly-vacuolar adipocytes prevail, containing a small amount of triacylglycerols (triacylglycerines). In the investigated tissue of 1 day old piglets, the increase in triacylglycerols is associated not only with the deposition of colostrum lipids, but also with the intense synthesis of fatty acids de novo from (U-14C)-glucose. In the adipose tissue of 5 day old piglets (U14-C)-glucose is incorporated intensively in the fraction of acylglycerols, whereas in 1 day old animals phospholipids make up 40% of the lipids synthesized by adipocytes. The revealed peculiarities of lipogenesis in the pig adipose tissue are associated with the hyperplasy and hypertrophy of cell elements.