Protective properties of the fleece of Taurian ewesof the Askanian fine fleece breed depending on the breeding differentiation rank

The study of factors affecting the humidity and contamination outer inner zones staple, which further affects yield pure wool its technological properties, is one current problems fine-fleeced sheep breeding. Purpose – evaluate protective properties fleece depending on rank breeding differentiation sheep. determination ranks based regularities normal distribution animals in population herd reproduction indicators. 10 were used. paper presents results a laboratory content mineral impurities degree staple. Sheep divided into differentiation. are considered. obtained data indicate that variety terms very large. coefficient variation 35% with from 13.7 to 38.4%. With an increase group total value for purposes, decreases (rs=-0.871±0.245). differentiation, average absolute indicators zone staple tend (rs = +0.257 ± 0.483), relative values decrease =-0.600 0.400). rate 3.02 cm range 2.83 3.29 cm. According contamination, these 32.5% 31.0 35.2%, respectively. sheep, length +0.600 0.400), =-0.486 0.437). individual ewes quite high. coefficients this feature 28.5 30.4%, slightly purposes animals. correlation -0.371 0.464 -0.543 0.420 terms. Breeding differentials leading groups low. Using technique allows controlling system valuation, supplementing it at final stages analysis selection; production conditions forming produce outstanding ram breeders