Seasonal and age dynamic of chemical and physical indexes of different wool covering of sheep

N. S. Strohush, P. V. Stapay

The data about the age and seasonal changes of chemical composition and physical indexes of wool of different sheep breeds are presented in this article. The highest percentage of sulfur in the wool was documented between June and January and the lowest between January and May. The wool of 4th monthly fine-fleece lambs contains higher amount of total phosphorus, hexosamines, tryptophan and cystein than the wool of ewes. The young animals' wool has higher strength and lower thickness than the ewe's wool. The youngest lambs' wool is characterized by the lowest strength and thickness. It was also determined breed characteristics of wool's chemical and physical parameters. The fuzz of Carpathian ewes has higher content of sulphur, tryptophan, phosphorus and hexosamines than the wool of Precos. At the same time the wool of Precos ewes contains larger amount of tyrosine than the wool of Carpathian ewes. The fuzz of Carpathian ewes has higher strength and thickness than the fuzz of fine-fleece ewes.

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