Search academic texts

Registration Number

0219U000621, 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, 14 tables, 9 references to literary sources, presented in 3 sections. Work was carried out during 2017. 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. Purpose and tasks of the researches - formation of the bases of breeding information, analysis of the genealogical structure of herds, estimation of quantitative and qualitative indices of productivity of cows and determination of 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) Analysis of the genealogical structure of herds and their evaluation by performance indicators. In the course of research, the electronic database of quantitative and qualitative characteristics of milk productivity, reproductive ability (Ukrainian red-and-white milk - 680 goals, Ukrainian black-and-white milk - 300 goals, Holstein (black-and-white suit) - 240 goals) was formed, linear estimation of structure body (290 goals) in Excel format. 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 support of cows of Ukrainian black and red-breasted dairy breeds were identified by the pedigree value of the father with the force of influence for the first (0.188 and 0.256) and the best (0.169 and 0.483) lactations, respectively - the lines of the father (0.113 and 0.234 and 0.108 and 0.420) confirm the appropriateness of rational selection of pedigree bulls, taking into account their belonging to promising genealogical formations, which will contribute to an effective improvement in the productivity of herds and breeds. 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). Reliable positive correlation relationships have been found in the first-born cows of Ukrainian black and red-breasted breeds between tardiness and viremic measurements: the circumference (r = 0.335 and 0.430), the length of the forequarters (r = 0.246 and 0.268), the length (r = 0,353 and 0,376), the width (r = 0,232 and 0,347) and the conditional volume of the udder (r = 0,272 and 0,330) indicate the expediency and efficiency of animal selection according to the morphological form of the udder and productivity. 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. According to the results of the research, an article has been published in the professional edition and the materials for publication in the "Agrarian Bulletin" are submitted.

Product Description

popup.authors

Бойко Олександр Васильович
Ващенко Вероніка Володимирівна
Ващенко Олександр Валерійович
Гончар Олексій Федорович
Небилиця Микола Степанович

popup.nrat_date

2020-04-02