UDC 636.4: 636.082.265
DOI: 10.26155/vet.zoo.bio.202001008

Authors

R. A. Faizullin
Candidate of Agricultural Sciences, Leading Researcher, Federal State Budgetary Institution “Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences”,
M. R. Saifutdinov
Research Worker, Udmurt Federal Research Center of the Ural Branch of the Academy of Sciences, Izhevsk, Russian Federation

Abstract

The aim of the research was to study the growth and development and productivity of young animals obtained by crossing large white sows with Yorkshire boars. The studies were carried out in LLC Zurinsky Agrocomplex Igrinsky district of the Udmurt Republic. For research, two groups of animals were formed. The first group was purebred young growth of a large white breed, and the second was a crossbreeding young growth of genotype (KB × Y). Assessment of the growth and development of experimental pigs was carried out taking into account live weight both at birth and at the age of 2, 4, 6 months. A study of the growth and development of pigs showed that the difference between the genotypes (KB × Y) and (KB × KB) in live weight was: at birth 5,83%, at 2 months - 9,95%, at 4 months - 6,27 %, at 6 months - 2,99% in favor of the genotype (KB × Y). The study of the feeding qualities of gilts was carried out taking into account the growth energies and feed costs per 1 kg of growth; meat qualities of experimental young animals - according to the meat yield in the carcass, the length of the carcass, the weight of the ham, the thickness of the fat. Evaluation of the feeding productivity of animals revealed the superiority of crossbreeding (KB × Y) over purebred peers of the combination (KB × KB) in average daily growth - by 7,24% and in feed costs - by 7,14%. An assessment of pig meat productivity showed that double-breed gilts (KB × Y) differed from pure-breed peers (KB × KB) in higher carcass lengths by 4,50 cm, bacon thickness by 3,70 mm and ham weight by 0,90 kg. In terms of meat yield in the pig carcass of genotype (KB × Y) with a significant difference, they exceeded pure-bred counterparts (KB × KB) by 4,87%.

Keywords

genotypes, growth, development, precocity, feed costs, weight of ham, area of ​​the “muscle eye”, meat yield.