DOI: 10.37143/0371-4365-2020-74-03

M. D. Berezovskyi, Doctor of Agricultural Sciences,
ORCID:https://orcid.org/0000-0003-4006-0182
E-mail:mikolaberezovskij8@gmail.com
Institute of Pig Breeding and agroindustrial production NAAS, Shvedska Mohyla Str., 1, Poltava, Ukraine, 36013
O. L. Narizhna candidate of agricultural sciences
ORCID:
E-mail:pigbreeding@ukr.net
Institute of Pig Breeding and agroindustrial production NAAS, Shvedska Mohyla Str., 1, Poltava, Ukraine, 36013
P. A. Vashchenko, Doctor of Agricultural Sciences
ORCID:https://orcid.org/0000-0002-9287-819X
E-mail:P.A.Vashchenko@gmail.com
Institute of Pig Breeding and agroindustrial production NAAS, Shvedska Mohyla Str., 1, Poltava, Ukraine, 36013

Abstract

The results of the study of reproductive qualities of purebred sows of the Large White breed, as well as crossbred sows of the combination ♀ the Large White × ♂ Landras (LW × L) with terminal boars (T) and other paternal forms – boars of the breed Landras (L) and Pietren are presented. The main purpose of the work done is to compare the terminal boars of own reproduction (T) obtained from the combination of breeds ♂ [♀ (♀LW × ♂L) × ♂P], with pure-breed boars of the Landras and Pietran breeds. The work was carried out in the conditions of the farm “SviatoNikolske” of the Krynychansky district of Dnipropetrovsk region. Seven experimental groups were formed for the experiment: I – LW × LW, II – LW × L, III – (LW × L) × L, IV – LW × P, V – (LW × L) × P, VI – LW × T, VII – (LW × L) × T. According to the main index of reproductive qualities – multiplicity, a significant difference was determined between groups I and IV – in favor of a purebred combination of KB × KB (p ≤ 0.01). The combination of (LW × L) × T (VII group) was the best among all the experimental groups, where a significant difference was found with respect to the control group (p ≤ 0.05; p ≤ 0.001) for all reproductive characteristics. Other combinations in terms of reproductive qualities were almost indistinguishable from the control group. Within each experimental group, the level of variability of the traits of reproductive qualities (Cv,%) was determined. A low level of variability (Cvmax = 9.1 %) was determined, which indicates the selection of productivity features. A comprehensive evaluation of each test group, based on reproductive qualities, was determined by the value of the evaluation indices. In addition to sow productivity, the most convenient indices for practical work were also identified. All six indexes used have a high level of correlation (from 0.78 ± 0.210; p ≤ 0.001 to 0.997 ± 0.0271; p ≤ 0.001), and the least labor and time costs are demanded by the indexes of Berezovsky M.D. and Shatalina Yu.D. One-factor ANOVA revealed a sufficiently high influence of the origin factor (η² from 32.58 ± 0.064 to 53.17 ± 0.045; p ≤ 0.001). That is, in the hybridization system, great attention must be paid to the level of productivity of the original maternal and paternal forms.

Key words: pig breeding, selection, terminal boar, reproductive qualities, crossing.

REFERENCES

• 1. Berezovskyi, M. D., P.A. Vashchenko, M.Ya. Trotskyi. 2006. Hematologic parameters of pigs of the Large White breed of domestic and foreign selection. Bulletin of the Poltava State Agrarian Academy. 4: 171-173 (in Ukrainian).
• 2. Vashchenko, P. A. 2005. To study intra-breed combinations of genotypes of pigs of the Large White breed of domestic and foreign selection at the stage of laying new genealogical structures: author’s abstract of dissertation. for the degree of cand. agricultural sciences: Specialty. 06.02.01. “Breeding and selection”. Vashchenko PA Poltava, 18 (in Ukrainian).
• 3. Onyshchenko, O. A. 2013. Industrial crossbreeding and hybridization, their effectiveness in pig breeding. Pig breeding of Ukraine. 62:72-76 (in Ukrainian).
• 4. Melnyk, O. O., A. A. Bondar, O. O. Kravchenko. 2012. Reproductive quality of sows and reproductive capacity of boars of different genotypes in conditions of pedigree factories. Tavriiskyi Nauchnyi Visnyk, 78(2): 129-133 (in Ukrainian).
• 5. Getia, A. A., P. A. Vashchenko, M. D. Berezovskyi. Methodical recommendations for the collection of primary zootechnical records for determining the breeding value of pigs in an automated mode, approved by the Scientific and Technical Council of the Ministry of Agrarian Policy of 14.12.2010 (in Ukrainian).
• 6. Vashchenko, P. A., M. D. Berezovskyi, V. G. Tsybenko. 2018. Substantiation of factors for inclusion in the model of determining the breeding value of pigs by reproductive qualities. Bulletin of Sumy National Agrarian University. Livestock series, 2 (34): 136-143 (in Ukrainian).
• 7. Berezovskyi, M. D. 1986. Indexes of sows development and their productivity. Pig breeding. Poltava, 42: 10-12 (in Ukrainian).
• 8. Poshchernyaev, F. K., V. P. Rybalko, N. D. Berezovsky. 1986. Methods of studying the processes of selection, breeding and reproduction of pigs: methodical guidelines M.: VASKHNIL, 80 (in Ukrainian).
• 9. Kovalenko, V. A. 1972. Index of breeding value – an indicator for evaluation of pigs. Sat. scientific tr. Donskoi SHI. Rostov-on-Don, 7: 145-146 (in Russian).
• 10. Tsereniuk, O. M., A. I. Khvatov, T. A. Stryzhak. 2010. Objective evaluation of maternal pig productivity . Tavriysky Nauchnyi Visnyk. Kherson, 69: 112-126 (in Ukrainian).
• 11. Shatalina, Yu. D. 2005. Index evaluation of sows of the Large White breed on the breeding farm of LLC “Slavutych” of Pokrovskyi district. Prospects of development of biotechnology in Ukraine. Collection of scientific works of the BTF STSU,2:96-104 (in Russian).
• 12. Kovalenko, T. S. 2009. Development of a breeding index for the estimation of reproductive qualities of sows. Tavriyskiy Visnyk. Kherson, 64 ( 3):128-131 (in Ukrainian).
• 13. Merkuryeva, Ye K., Z. V. Abramova, A. V. Bakay, [et al.]. 1991. Genetics. M.: Agropromizdat, 446 (in Ukrainian).