Results of breeding value evaluation of sows with the use of traditional and in-novative methods

DOI: 10.32900/2312-8402-2020-124-212-224

Khalak V.I.,
C. sci. agr., Sen. res.,
Kozir V.S.,
Dr. sci. agr., professor, academician of NAAS of Ukraine,
Institute of Grain Crops NAAS,
Rudenko Yevhen,
Doctor of Veterinary Medicine. Sci., Professor, Corresponding Member of NAAS,
https://orcid.org/0000-0002-2200-2758,
Institute of Animal Science of the NAAS

Keywords: pigs, sow, reproductive qualities, breeding value, index, variability, correlation, economic efficiency


Abstract

The article presents the results of research on the reproductive qualities of sows of different breeding value, as well as determines the economic efficiency of their use in the industrial complex. The study was conducted in agricultural formations of the Dnipropetrovsk region (LLC “Druzhba-Kaznacheyivka”, LLC “Vidrodzhennia”) and the laboratory of animal husbandry of the State Institution Institute of Grain Crops NAAS. The work was performed according to the research program of NAAS №30 “Innovative technologies of breeding, industrial and organic production of pig products” (“Pig breeding”).
Evaluation of sows on the grounds of reproductive qualities was carried out taking into account the following indicators: fertility, head; high fertility, kg, number of piglets at weaning, head, nest weight at the time of weaning at the age of 28 days, kg, nest weight at the time of weaning at the age of 60 days (estimated), kg, safety, %. The breeding value of animals was determined by the multiplicity and weight of the nest at the time of weaning (according to Annex 7 of the Instructions for grading pigs) and the selection index of reproductive qualities of sows (SIVYAS). The index of alignment (homogeneity) of the sow’s nest by live weight of piglets at the time of their birth (ІВГ0) was calculated according to the method of V.I. Khalak (2012), the economic efficiency of research results – according to conventional methods. Biometric processing of research results was performed according to the methods of G.F. Lakin (1990).
It was found that sows of the “elite” class were superior to peers of the “extracurricular” class in terms of multiplicity, several piglets at weaning, nest weight at weaning at 28 days and nest weight at weaning at 60 days (estimated) by an average of 28, 76%. The difference between sows of classes M + and M- (distribution class for SIVYAS) in terms of multiplicity, number of piglets at the time of weaning, the weight of the nest at the time of weaning at the age of 28 days and weight of the nest at the time of weaning at the age of 60 days (estimated) is 34.32. 34.78, 27.60 and 28.30 %, respectively. The coefficients of pair correlation between the absolute indicators of reproductive qualities of sows, the index “alignment (homogeneity) of the sow’s nest by live weight of piglets at birth” and the selection index of reproductive qualities of sows (SIVYAS) at 83.33-100.0 % are reliable from -0.446 to +0.989. The criterion for the selection of highly productive animals according to the Instructions for grading pigs is the class “elite”, according to the selection index of reproductive qualities of sows (SIVYAS) – 97.85-123.99 and more points.
The use of sows of the class “elite” and М+ (according to SIVYAS) provides additional products at the level of +11.84 – 16.49 %.

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