Age and seasonal features of skin lipid metabolism and wool chemical content of precos breed sheep

N. S. Strohush, P. V. Stapay

The age and seasonal features of lipid fraction components in the skin were established. It was shown the ewe's skin characterized by higher percent of etherificating cholesterol and triacylglycerols fractions compared with lamb skin. Seasonal changes of lipid correlation in summer-autumn period take place due to increasing of etherificating cholesterol, triacylglycerols, phosphatidylethanolamine and phosphatydylserine, in winter period - due to increasing of nonetherificating cholesterol and phosphatidylethanolamine. The same changes take place in lambs' skin. It was established that lamb skin phospholipids consist of about 50 % phosphatydylserine. With age phosphatydylserine content diminishes to the level of adult animals. In ewe's wool there is higher content of sulphur-containing compounds such as total sulphur, cysteine, cystine in comparison to young sheep wool.

Download full text in PDF format