Оценка племенных и экстерьерных показателей казахской грубошерстной курдючной породы овец

Abstract

Background and aim. The article presents assessments of breeding and exterior indicators of the Kazakh coarse-wooled fat-tailed sheep breed bred in the farms of the “Birlestik” farm in the Ulytau region and the “Akzhar Ondiris Agrofirma” LLP in the Pavlodar region. The aim of this study is to analyze the results of the bonitation of Kazakh coarse-wooled fat-tailed sheep, as well as their exterior and constitutional features and productive and breeding indicators.

Materials and methods. The analysis of data collected using the “Republican Livestock Breeding System” information and analytical system of Livestock Breeding of the including zootechnical events and the class composition of animals, was carried out. A comprehensive measurement of phenotypic parameters was carried out: height at the withers and sacrum, chest width behind the shoulder blades, chest depth, oblique body length, metacarpus girth. The measurements were carried out using standard zootechnical instruments. Based on the measurements obtained, the index indicators of constitution were calculated, which allowed for an objective assessment of the exterior type and compliance with breed standards.

Results. The prevalence of elite stock (up to 94.6% among rams) was established, which indicates a significant genetic potential of the studied stock. The indicators of offspring and weaning in both farms are also at a high level (96-98%), which indicates a good organization of zootechnical accounting and animal care. The measurements and constitution indices of animals confirm their compliance with the breed standard, which confirms good development, adaptability and compliance with the breed-forming type.

Conclusion. The use of the “Republican Livestock Breeding System” information and analytical system of Livestock Breeding made it possible to increase the accuracy of accounting, zootechnical events, automate the calculations of breeding value and facilitates the analysis of breeding work. Consequently, the selection and breeding work in the farms is organized at a good level, and the use of information technologies contributes to the further improvement of the breed qualities of the Kazakh coarse-wooled fat-tailed sheep breed. The obtained data can be used for digital management of selection work and the development of breed improvement programs.