Breeding work with lines and families of the large white breed of pig factory type «Bahachansky»

Keywords: boar, sow, breed, family, line, factory type, reproductive qualities, selection, index, linear model

Abstract

The results of the study of the genealogical structure and the current state of productivity of various structural elements of the "Bagachanskyi" factory type ten years after its approval and approval are presented. The research was conducted in the conditions of the large white breeding plant of PAF "Ukraine" of the Poltava region and in the selection laboratory of the Institute of Pig Breeding and Agro-Industrial Production. The purpose of the research was to develop a program of selection measures to increase the productivity of pigs of the factory type "Bagachanskyi" of the large white breed. It was established that compared to 2015, the share of animals imported from other farms decreased from 4.3% to zero in sow pedigrees, and from 27.5% to zero in boar pedigrees.This is due to the fact that PAF "Ukraine" acquired the status of a breeding farm, and the pig herd of this farm was involved in the creation and approval of the factory type of pigs "Bagachanskyi". Therefore, after 2010, the importation of boars from other farms took place in a limited number and exclusively for breeding purposes, and after 2014, the stud farm completely switched to self-repair not only with pigs, but also with boars. Thanks to the purposeful breeding work in the herd on development indicators and meat qualities, the consolidation of repair young animals according to these characteristics reached the maximum level (the coefficient of variation is in the range from 0.33 to 1.62%).At the same time, the absence of a significant difference between families complicates the breeding work and reduces the opportunities for intrabreedheterosis. The use of index selection, including based on linear BLUP models, contributed to the achievement of a high level of indicators of reproductive qualities (+14.8-16.0% compared to the requirements for the elite class) without deterioration of indicators based on the characteristics of bacon thickness and the age of reaching a weight of 100 kg . When evaluating the genotype by the BLUP method, it was found that the most productive offspring in terms of reproductive qualities are predicted to be obtained from sows of the Ella family. At the same time, the most significant improvement will occur at the expense of the trait of nest mass, while the sows of the Beatrice family have the highest genetic potential for multifertility. Among boars, the Slavutych line is characterized by the best BLUP breeding value index.

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Published
2022-11-18
How to Cite
Berezovskyiy, M. D., & Vashchenko, P. (2022). Breeding work with lines and families of the large white breed of pig factory type «Bahachansky». Animal Husbandry of the Steppe of Ukraine, 1(2), 103-113. https://doi.org/10.31867/2786-6750.1.2.2022.103-113