Registration Number
0221U102252,
0116U001197
, R & D reports
Title
Explore the dynamic of microevolutionary processes in the breeding herds of Merino sheep during their selection for development of wool productivity.
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Head
Zaruba Kostiantyn V., Кандидат сільськогосподарських наук
Registration Date
29-01-2021
Organization
MF Ivanov Askania-Nova Institute of Steppe Animal Husbandry - National Scientific Breeding and Genetics Center for Sheep Breeding
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The object of the research is the Ascanian Fine-Fleeced sheep breed of Tavrian type.Purpose of the work: Study of the breeding characteristics and breeding and genetic parameters development dynamics in the breeding process of the Ascanian Fine-Fleeced breed sheep the Tavrian type and the development of methods for improving quality indicators of wool, increasing the productivity level.It was found that the first Ascanian Fine-Fleeced sheep breed modern wool structure in terms of fiber fineness requires correction in the direction of reducing the number of animals with wool below 60 quality and increasing the number of sheep with wool of 70 quality to 12-15%.Animals obtained as a result of selection by live weight are characterized by an increased wool production level. Lamb ewes and rams, obtained in the selection by the fineness of the coat, have a tendency to reduce the length and yield of the wool clip. The positive influence of selection on the increase in the proportion of the wool desired assortments was established, the proportion of animals with the main grade of 70 quality increased to 23.1%.It has been established that at the age of 2 years the lamb ewes have the maximum wool clip and a high yield of pure fiber, and at the annual age - the length of the wool. Up to 3 years of age, the diameter of wool fibers grows in all topographic parts of the body, and the proportion of animals with thin assortments decreases.The forecast of the ewes' productivity level is effective both at the annual and at 2 years of age according to the following indicators: wool fineness, unwashed wool shearing and body weight; since the repeatability factor of these indicators is 0.607 ... 0.490.Methodological methods of improving the Ascanian Fine-Fleeced breed sheep Tavrian type have been developed.
Product Description
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Vasylenko Tatjana V
Drozd Svitlana L
Urbanevych Inna V
Yakubovych Zinaida M
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2021-01-29
