Mohylnyts'ka S. Breeding sheep milk production estimate different types Ascanian Karakul breed

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0413U006091

Applicant for

Specialization

  • 06.02.01 - Розведення та селекція тварин

04-10-2013

Specialized Academic Board

К 38.806.02

Essay

The object of research: the formation of milk production of ewes Ascanian Karakul breed black and grey colours. The aim of research: evaluation of quantitative and qualitative parameters of milk production of various types of newly Ascanian Karakul sheep and establishing breeding and genetic factors that influence the development of this feature. Methods of research: zootechnical, morphological, biochemical, biometrics. Theoretical and practical results : a theoretical perspective - received evidence-based knowledge about the biological characteristics of the formation of quantitative and qualitative parameters of milk production of Karakul sheep mammary gland structure depending on the genotype of the animals , the ratio of different protein fractions of milk of calves derived from mothers with different levels of lactic performance, in practice - selection for twins, strong body structure and shape of cupped udder will boost milk production of sheep. An improved method of forecasting future milk production of ewes within the parameters of breast cancer will allow animals to identify at an early stage of lactation milk yield ewes. Innovation: the first time based on comprehensive research received evidence-based knowledge on the level and dynamics of milk production and composition of milk of sheep interbreed of two new types of Ascanian Karakul breed. Found differences in terms of milk production between animals' black and grey colours. For the first time found that black wool more correlated with milking ewes than grey. At the level of the studied traits in twins are more affected (64.0 %), the term productive use (30.0 %) and live weight of the animals (15.0 %). It was also established morphology breast of different types. It is shown that based on the research population consists of animals' cupped udder - 73.3 % of blacks and 60.0% of individuals in grey. The other animals characterized by the rounded shape of the breast. A method of predicting milk production of sheep in the early stages of lactation is presented. Degree of implementation: to intensify the selection process in populations of sheep breed in Ascanian Karakul in State Enterprise an Experimental Farm " Kakhovske " Kherson region and Farming Enterprise " Berestetskuy vivcharyk " Chernivtsi region implemented the system of evaluation of milk production using mix of selection and genetic parameters. Sphere of using: animal husbandry, especially sheep breeding.

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