STUDYING OF THE VARIATION TREND OF PRODUCTIVE TRAITS AS BODY WEIGHT AND WOOL YIELD IN DAIRY SHEEP, RAISED IN AGRICULTURAL INSTITUTE STARA ZAGORA
P. Slavova, S. Laleva, Y. Popova
Abstract: The aim of the study is to identify and analyze the phenotypic variations of productive traits as bodyweight and wool yield in sheep from Bulgarian milk synthetic population raised in Agricultural Institute - Stara Zagora.
Breeding traits - live weight and wool yield at different age ( from birth to 5.5 years ) were studied and the trend of their variability during the period of economic use 2006-2012 and by year of birth has been observed.
As a result of this study the following conclusions can be drawn: Sheep from the flock of SPBM have good physiological status, allowing the realization of their genetic traits for optimum productivity. Live weight increases, but wool yield variation is insignificant with age. The level of both productive traits corresponds to the selection limits of tribal dairy sheep.
Specificity of nongenetic factors in individual years has some impact on their productivity.
Breeding traits - live weight and wool yield at different age ( from birth to 5.5 years ) were studied and the trend of their variability during the period of economic use 2006-2012 and by year of birth has been observed.
As a result of this study the following conclusions can be drawn: Sheep from the flock of SPBM have good physiological status, allowing the realization of their genetic traits for optimum productivity. Live weight increases, but wool yield variation is insignificant with age. The level of both productive traits corresponds to the selection limits of tribal dairy sheep.
Specificity of nongenetic factors in individual years has some impact on their productivity.
Keywords: dairy sheep; in different age; live weight; wool yield
Date published: 2017-02-08
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