STUDY OF DYNAMICS IN VARIATION OF WOOL PRODUCTION IN SHEEP OF THRACIAN FINE FLEECE BREED

P. Slavova, I. Dimitrov, St. Laleva, Y. Popova

Abstract: The aim of this study is to examine the dynamics of variation of wool production in sheep of the Thracian fine fleece breed. Two hundred and thirty sheep from a flock, born and raised in Agricultural institute – Stara Zagora during 2006–2014, are the object of our research. Studied and analyzed are breeding traits as wool productivity and staple length from 1.5 to 5.5 years and wool yield and pure wool of 1.5 and 2.5 years by year of birth. The data were processed statistically by ANOVA.
As a result of this study we can draw the following conclusions: The wool production in the Thracian fine fleece breed corresponds to the limits for breeding animals for this productive direction. There is an upward trend in wool productivity in sheep by year of birth for the studied period 2006–2014. The variation of the trait staple length is not unidirectional. The wool yield is high – from 54.086% to 60.030% at 1.5 and from 55.101% to 58.162% at 2.5 years of age. Pure wool is in the range of 4.330–5.132 kg at 1.5 and 2.982–4.212 kg at 2.5 years of age. The dynamics of change of the studied traits is due to the influence of the year of birth and the market year, in which the animals have produced, an indication for which are the ascertain differences in their values.

Keywords: dynamics of change of studied traits; fine fleece sheep; wool production

Date published: 2017-05-17