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Information × Registration Number 0219U000620, 0116U002151 , R & D reports Title Methodological bases for optimization of the selection process in populations of Ukrainian black-and-white, red--and-white and Holstein breeds popup.stage_title Head Sotnichenko Yuliya, Registration Date 11-02-2019 Organization Cherkassy experimental station furs animals breeding and hunting of Cherkassy institute of agroindustrial production popup.description2 The GDR report contains 34 pages, 15 tables, 9 references to literary sources, presented in 3 sections. The work was carried out during 2016. Objects of research - exterior type of cows, genealogical structure of herds, selective genetic parameters of the main characteristics of productivity, patterns of dynamics of milk production of cows. Method of research - used genealogical, population, genetic-mathematical, estimation of genotype of animals, biometric and statistical analysis of selection information, conclusions. The purpose of the work and research tasks is to form a database of breeding information, analyze the genealogical structure, quantitative and qualitative indices of cow productivity and determine the system of selection of bulls-improvers for extended reproduction. Tasks: 1) To form information databases, to analyze the genealogical structure of herds and to evaluate the cows by indicators of milk productivity and reproductive ability. 2) Conduct a linear estimation of primates according to the exterior type. 3) Selection of cows-record-keeping in a group of potential mothers of bulls and individual selection of parents' couples. Based on the analysis of breeding situation in herds, promising genealogical formations were determined and a rational system for selecting parental pairs for their expanded reproduction was developed. Genealogical diversity of herds, in general, is very low with a high affinity between the lines that complicates the organization of the selection of pedigrees in the line of lines for further reproduction. In assessing the quantitative and qualitative indicators of milk productivity, their dependence on genotypic factors is established. The highest factors influencing the size of the cow support of Ukrainian black and red-breasted dairy breeds were identified by the parent's pedigree value with the effect of the first (= 0.188 and 0.256) and better (= 0.169 and 0.483) lactation, respectively, of the father's line (= 0.113 and 0,234 and 0,108 and 0,420) confirm the expediency of rational selection of pedigree bulls, taking into account their belonging to promising genealogical formations, which will promote effective improvement of productivity of herds and breeds. In determining the desired type and target standards of exterior signs, particular attention was paid to the morphological and functional characteristics of the udder. Positive correlation coefficients were found between the magnitude of the charge for higher lactation and the characteristics that characterize the size of the udder - width, length and coverage (r = 0.248, 0.152 and 0.139) and signs of the distance of the bottom of the waist from the skull joint (r = 0.315), the length of the front = 0.332) and posterior droplets (r = 0.284). At the same time, high and accordingly reliable coefficients of inheritance distinguish signs of the distance of the bottom of the waist from the skull joint (h2 = 0,546), the depth of the udder (h2 = 0,523), the length (h2 = 0,418), the length of the front hairs (h2 = 0,433). The period of up to 90 days (6431 kg for 305 days of lactation) is defined as the optimal service period in a dairy cattle population. For high-yielding cows (hopes over 7000 kg), service life of up to 121 days is not critical. The experimental results obtained are used to create competitive herds under the conditions of intensive milk production technology and are used in the development of programs and perspective plans for breeding with herds of Ukrainian black-and-white and red-bream dairy breeds in 3 farms in Cherkasy region. Product Description popup.authors Бойко Олександр Васильович Ващенко Олександр Валерійович Гончар Олексій Федорович Ляшенко Андрій Олександрович Небилиця Микола Степанович popup.nrat_date 2020-04-02 Close