Agricultural Science and Practice最新文献

{"title":"Factors of ensuring the competitiveness of Ukraine’s pig breeding production in external markets","authors":"M. Ibatulin, O. Varchenko, I. Svynous, O. Klymchuk, O. Drahan, I. Herasymenko","doi":"10.15407/agrisp6.02.029","DOIUrl":"https://doi.org/10.15407/agrisp6.02.029","url":null,"abstract":"Aim. To substantiate the approaches to activating export transactions in the market of pig breeding products, determining the indicators of competitiveness of the main kinds of meat and relative competitiveness of pig breeding products in the leading countries based on the identifi cation of factors, restraining the export of Ukrainian pig breeding products, and elaborating the suggestions on eliminating their negative impact on the dynamics of foreign economic activity in the industry. Methods. The methodological approaches of the study were based on the information about the volumes of foreign trade, mainly used for international comparison and determined for each commodity or commodity group. The Relative Export Advantage Index (RXA), the Relative Import Penetration Index (RMP) and the Relative Trade Advantage Index (RTA) were determined while estimating competitive advantages of pig breeding products. The study involved a comprehensive comparative analysis of the main kinds of meat products in the\u0000external market using the model of “food independence – competitiveness”. The index of food independence was used along with the generalizing index of competitiveness for some kinds of meat products – the modi- fi ed Balassa index. It was determined that it was reasonable to determine the level of food independence based on food self- production within the range of 70–80 % from the commodity resources of the domestic food market. Our study involved the data of the informational database of the State Statistics Service of Ukraine and FAO regarding the volume of export-import of pig breeding production. Results. It has been proven that there are no competitive advantages of Ukraine’s pig breeding produc- tion in external markets; there is insuffi cient food independence on the background of potential advantages for the expansion of export, in particular, that of cheap fodder and logistics. A considerable decrease in the exchange rate for hryvnia compared to foreign currencies of the leading countries creates\u0000prerequisites for successful promotion of Ukrainian pork both in domestic and foreign markets. The need of monitoring the implementation of food independence criteria and diversifi cation of export specialization of the country was substantiated. In the long-term perspective, it is reasonable to optimize the level of protection for the market of pig breeding products, to stimulate domestic production, to distribute the instruments of state support for the “green box”. It has been proven that the main directions of supporting the export of domestic agrarian products should become as follows: facilitating export procedures; expanding assortment and accessibility of fi nancial services; developing the support- ing infrastructure; informational support for exporters; conducting research and implementing support programs; the activity of the system of credit-insurance institute and trade representations should be carried out in a single complex via det","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44576528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy efficiency research of fermentation medium agitation in manufacturing of microbiological plant protection products","authors":"V. Yaroshevsky","doi":"10.15407/agrisp6.02.076","DOIUrl":"https://doi.org/10.15407/agrisp6.02.076","url":null,"abstract":"Aim. The main aim of the research was to compare different methods of fermentation medium energy effi ciency agitation. Methods. The analysis of mass transfer processes in fermenters using different methods of agitation was made. Experimental determination of energy consumption for medium agitation while using a mechanical agitator and an external circulation loop was realized. Estimation of energy effi ciency indices. Results. It was determined that energy effi ciency of agitation by circulation during the cycle of bacterial preparation Planriz BT (Biotechnica) exceeded mechanical agitation 1.3 times in case of aeration, and 2.6 times in the non-aeration mode. Conclusions. The method of agitation by circulation of fermentation medium using an external loop is more energy-effi cient compared to mechanical agitation even in the case of using a slow-speed agitator.","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42905755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvement of the technology of obtaining stable (di)haploid regenerants from embryonic culture of apomictic sugar beet (Beta vulgaris) breeding material without the use of colchicine","authors":"N. Kovalchuk, M. Roik, Yaroslav Hadzalo, T. Nediak, O. Zinchenko","doi":"10.15407/agrisp6.02.003","DOIUrl":"https://doi.org/10.15407/agrisp6.02.003","url":null,"abstract":"Aim. To evaluate the effi ciency of inducing generative, reduced parthenogenesis and to better use the differentiating potential of the embryo culture under apomictic seed production in selection materials of sugar beet with cytoplasmic male sterility (CMS), and B) to isolate homozygous lines (dihaploids) without the use of polyploidizing substances. Methods. Apomictic (agamosper- mous) seed production in apocarpous pollen sterile lines from B. vulgaris subsp. vulgaris var. altissima (sugar beet) using classi- cal so-called Owen sterile cytoplasm and sterile cytoplasm from Beta maritimа and Beta patula as sources, was conducted under pollen free conditions and spatial isolation in the greenhouse breeding complex of the Yaltushkivska experimental breeding station (Yaltushki, Ukraine). The specifi cities of embryonic development of apomictic embryos were studied with the purpose of effi cient regulation of the induction of explants in vitro as donors of the culture of immature embryos. Fluorescent fl ow\u0000cytophotometry in combination with the computer program of the Partec Ploidy Analyser PA-2 (Partec GmbH, Germany, now Sysmex), were used to determine the degree of ploidy, enabling the selection of haploid and dihaploid lines in vitro. A genetic method was developed using the expression of morphological marker indices of nuclear genes of anthocyanin coloring (R+ r–) of regenerant plants in vitro and ploidy determination for differentiation by generative (reduced) parthenogenesis. The sampling technique that took into account the hormonal composition of cultural media and the level of genome ploidy, sample frequency and statistical analysis of the results was determined using the appropriate statistics; the percentage of regenerants, induced by different types of morpho- genesis and ploidy in vitro, was determined along with the measurement error to control the accuracy of the selected sampling (number of seed embryos). Results. The selected cultural medium No. 3, based on the basal medium according to\u0000Gamberg et al., 1968 (21), contained 6 BAP – 2 mg/l, 2.4 D – 0.5 mg/l, gibberellic acid – 0.1 mg/l, which ensured a success rate of 4.4 to 23.3 % of direct regeneration of shoots from the embryo culture, depending on the genotype of donors, and 4–10 % for induction and proliferation of callus. In ten experimental numbers of alloplasmic lines of sugar beet, the incidence of haploids and mixoploids among the regenerants from the embryo culture fl uctuated within the wide range of 14.8 – 62.2 % and exceeded the indices, ob- tained by other known methods of haploid parthenogamy, which had the values of 3.79 – 6.25 %. Conclusions. The homozygous lines and dihaploids were determined and set apart/stabilized in the process of micropropagation, where the differentiation of clones was made on the basis of total DNA content in interphase nuclei, using information of histograms generated in fl uorescent fl ow cytometry with the Partec Ploidy Analyser PA-II instru","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41894544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risks and problems of forming united territorial communities in Ukraine","authors":"L. Novakovsky, I. Novakovska, O. Bredikhin, M. Stetsiuk, L. Skrypnyk","doi":"10.15407/agrisp6.02.066","DOIUrl":"https://doi.org/10.15407/agrisp6.02.066","url":null,"abstract":"Aim. To determine the specifi cities of uniting territorial communities at the national and regional levels during the process of power decentralization, to generalize the experience of its legal and organizational provisions, the practice of reforming local self-government in the EU member states, to estimate the risks of decentralization in Ukraine in general and in rural area in particular, and to establish the directions of its development at the fi - nal stage. Methods. Monographic, mathematical-statistical, cartographic, abstract-logical, comparative, analytical analysis. Results. The work conducted during the fi rst stage of decentralization reform (2014–2018), was esti- mated by the Council of Europe as the most successful reform in progress in Ukraine. As of January 01, 2015, 85.2 % of territorial communities were located in rural areas, where agriculture is the prevailing kind of the popula- tion’s activity. Thus, power decentralization and reforming local self-governance refers to rural\u0000population, fi rst and foremost. However, the study has confi rmed that the implementation of reforming remedies has been restrained, as the main provisions of decentralization have not been enshrined in the Constitution, there are no defi nite plans on developing united communities, it is impossible to overcome the removal of local councils from managing land resources beyond the boundaries of settlements, the reform is being blocked by regional and district state authori- ties. Conclusions. Current system of rural population settlements, characterized by a considerable number of small villages, the specifi city of territorial organization of power (40 % of local councils have less than 1,000 residents) and village and town budgets, subsidized for almost 50 %, are prerequisites of uniting communities as the only way of forming sustainable local self-governance. The centralization of authorities by the executive branch regarding governance over territories, low spreading of local self-governance and absence\u0000of land resources in communal ownership, fi nancial limitedness of councils prove that without principal changes in the current position, most ter- ritorial communities will still remain unsustainable in legal, organizational and fi nancial aspects. The experience of implementing decentralization tasks in regions demonstrates that the level of organizational and explanatory work and control over reforming should be enhanced considerably. The issues of regulating the division of mountainous territories and setting higher bonuses and benefi ts, improving budget limits of the communities via taxation system, enhancing the role of cities of regional signifi cance as centers of united territorial communities should be settled at the legislative level. At this stage, the risks of implementing decentralization in Ukraine are as follows: the impos- sibility of completing the plan of implementing the remedies of its second stage without amending the Constitut","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42343027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic characterization of the Mirgorod pig breed, obtained by analysis of single nucleotide polymorphisms of genes","authors":"P. Vashchenko, Viktor Balatsky, K. Pocherniaev, V. Voloshchuk, V. Tsybenko, A. Saenko, Ye. Oliynychenko, T. Buslyk, H. Rudoman","doi":"10.15407/agrisp6.02.047","DOIUrl":"https://doi.org/10.15407/agrisp6.02.047","url":null,"abstract":"Aim. To determine genetic characteristics of the Mirgorod pig breed by analysis of 25 SNPs of 22 genes and to conduct the associative analysis of genes MC4R (SNP c.1426 G > A), LEP (SNP g.2845 А ˃ Т), GH (BsuRI- polymorphism), CTSF (SNP g. 22 G > C) with productive traits of animals. Methods. Blood samples of pedigree Mirgorod pigs, bred at SI «Experimental farm named after Decemberists», Poltava region, were used for the studies. DNA genotyping was performed by PCR-RFLP and TaqMan. Results. Specifi c features of the breed were determined in terms of gene allele frequencies, high level of genetic variability (He – 0.326) and allelic diversity (mean number of alleles per locus – 1.96). The KPL2/m allele that causes genetic anomaly of ISTS is absent among investigated Mirgorod pigs, and the recessive RYR1 g.1843T allele, responsible for stress sensitivity of pigs, occurs at a low frequency (0.04). Unlike other breeds, a relatively high frequency of the minor allele g.15A (0.16) of CTSK and polymorphism of the\u0000LEP gene (SNP g.3996 T > C) (He – 0.455) was observed. Statistically signifi cant associations of polymorphisms have been established: MC4R (SNP c.1426 G > A) with age of gaining 100 kg, the thickness of backfat and the Eye Muscle Area, GH/BsuRI with the age of gaining 100 kg, and CTSF (SNP g. 22G > C) with Eye Muscle Area. There was a trend of statistically signifi cant differences between groups of pigs with different genotypes of LEP (SNP g.2845 А ˃ Т) and the thickness of the backfat (p = 0.09). Conclusions. It is reasonable to carry out the restoration of the gene pool of the Mirgorod pig breed, taking into account the SNPs of the studied genes and their associations with the productive traits. It is expedient to give preference to pigs with SNP genotypes с.1426 MC4R GA, MC4R AA, g. 22 CTSF CC, g.2845 LEP TT for breed reproduction.","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48695810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methodological aspects of determining the processes of organic matter mineralization↔synthesis in croplands","authors":"V. Volkohon, O. Pyrig, K. Volkohon, S. Dimova","doi":"10.15407/AGRISP6.01.003","DOIUrl":"https://doi.org/10.15407/AGRISP6.01.003","url":null,"abstract":"Aim. To determine the peculiarities of N[2]O and CO[2] soil emissions under different systems of crop fertilization. Methods. Field experiment, gas chromatography. Results. The data obtained during the permanent fi eld experiment on leached chernozem with crop rotation including potatoes, spring barley, peas and winter wheat have shown that both absolute (N[2]O) and specifi c (relative to carbon losses in the form of СО[2] ) losses of nitrogen depend on crop fertilization system. The introduction of raw organic material to the soil in the form of cattle manure or lupine (green manure) has led to the increased CO[2] emission levels. However, specifi c nitrogen losses in the form of N[2]O (g N-N[2]O/kg C-CO[2] ) have remained at the control level. The application of mineral fertilizers (under the absence of raw organic material) have triggered N[2]O emissions and more intense production of CO[2] (up to 67 % in the variant with the highest dose of mineral fertilizers (N[120]P[120]K[120] kg/ha of active\u0000ingredient), which can be caused by the mineralization of humus compounds. In organo-mineral fertilization system the specifi c losses of nitrous oxide have not exceeded the control and fallow. Based on the obtained results the authors propose the method of determining the “mineralization-synthesis” indices of organic matter in agricultural soils for estimation of the orientation of biological processes under different crop growing conditions. Conclusions. Systemic application of mineral fertilizers without introduction of raw organic material leads to the misbalance of mineralization and synthesis processes in soils. Under such conditions the mineralization of organic matter is prevailing. The use of organic and organo-mineral fertilizers has balanced these processes in the soil. The proposed methodological approach for determination of mineralization-synthesis indices is based on the emission ratio of g N-N[2]O/kg C-СО[2] compared to the reference values and can provide an objective view of the tendency of\u0000mineralization (negative ratio values) and synthesis (positive ratio values) processes in the soils. It provides grounds to the decision-making principles of agricultural crops fertilization or introduction of certain agronomic techniques.","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43201575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risks of dairy farming in Ukraine and ways of their minimization and neutralization","authors":"O. Varchenko, V. Radko, O. Rudych, I. Svynous, K. Tkachenko","doi":"10.15407/AGRISP6.01.041","DOIUrl":"https://doi.org/10.15407/AGRISP6.01.041","url":null,"abstract":"Aim. To identify the main types of risks, remarkable for agricultural dairy production, to evaluate the consequences of their increase and to substantiate a comprehensive system of managing them on the level of enterprise which would promote their minimization and neutralization. Methods. Common methods and techniques were applied in the study: a combination of scientifi c techniques of abstract-logical method of elaborating theoretical provisions, deduction method while isolating specifi c risks in dairy farming from the total amount, empirical methods of investigating the activity of dairy enterprises and computer generated simulation while substantiating practical instruments of risk management in agricultural dairy production. The correlation-regression analysis was used for statistical processing of the data and study results. Results. During the investigation the following kinds of risks in dairy production were isolated: natural, ecological, technological, market-related risks. The natural risk is related to the environmental impact, fi rst and foremost, to the change in temperature regime of the environment of keeping cows, ecological component of manure utilization. The technological risk is characterized by violating the conditions of keeping cows at farms, which is manifested via loss and disposal of cows from the core herd. It has been found that currently the distribution of diseases, i.e. epizootic situation in the country, presents increased risk for farms. One of the ways to neutralize and minimize the manifestation of technological risks is improving biosafety of stock breeding complexes and developing the insurance of livestock. In addition to risks of diseases (infectious, invasion, non-contagious) and other standard risks (fi re, natural disasters, etc.), it is reasonable to insure against the following kinds of risks: interrupted production (caused by death or loss of insured animals), after which current expenses for renewal of production or forfeited profi t would be reimbursed automatically or after submission of confi rmation documents; transportation of animals, including sea, air, and railway travel; expenses to remove the remains of animals after the insured event which caused their death; reimbursing the expenses for elimination of consequences, caused by infectious diseases, which made it impossible to renew the production without prior applica- tion of disinfectants. While evaluating market-related risks, special attention should be given to the relations of producers and processors of milk. Market risks are closely related to technological risks, as milk quality has a decisive impact on the formation of procurement prices. Conclusions. The systematization of risks in dairy farming should be performed in accordance to the total system of their manifestation and to specialized identifi cation which characterizes specifi cities of this sphere. The probability of most risks, occurring in dairy production, is considerab","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46246583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy effi ciency research of fermentation media agitation in manufacturing microbiological plant protection preparations","authors":"V. Yaroshevsky","doi":"10.15407/AGRISP6.01.075","DOIUrl":"https://doi.org/10.15407/AGRISP6.01.075","url":null,"abstract":"","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46595570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen-carbon circulation in agrocenoses with different fertilization systems","authors":"O. Demydenko, V. Velychko","doi":"10.15407/AGRISP6.01.028","DOIUrl":"https://doi.org/10.15407/AGRISP6.01.028","url":null,"abstract":"Aim. To compare nitrogen-carbon circulation in organic and intense fertilization system in agrocenosis of a short crop rotation with grain and intertilled crops on podzolic highly-regraded low-humus chernozem in the Central Forest-Steppe of Ukraine. Methods. Summarization of the study results in the permanent fi eld experiment, statistical method, dispersion method, correlation analysis of performance parameters, structures of phytomass, quality and quantity items of carbon and nitrogen balance. Results. In the organic system of fertilization, the removal of N increased to 0.25 units per capacity unit of nitrogen balance, which is 1.47 times higher, and the total loss of N increased 1.1 times (0.31 units per capacity unit of nitrogen balance) regarding the intense system of fertilization, but with lower values of balance items for nitrogen in the agrocenosis. Direct and strong correlation relationships were revealed between the yield of fodder units and the content of organic carbon in the structural components of the total phytomass: with organic carbon in the main products and root mass – R = 0.86–0.88 ± 0.02; R^2 = 0.74–0.77, and with the content of organic carbon in by-products and non- commodity total phytomass the relation to the yield of fodder units was on the level of direct mean correlation: R = 0.58–0.65 ± 0.02; R^2 = 0.34–0.43. The increase in the yield of fodder units is accompanied with the 1.32- fold decrease in the nitrogen balance capacity regarding the intense system of fertilization. Conclusions. It was established that in case of organic system of fertilization the ratio of organic carbon and N in the agrocenosis of a short crop rotation is the most optimal and approximates 30:1, which is the most profi table for humifi cation of by-products and decrease in the intensity of humus mineralization. Balance capacity is a restrictive factor in the circulation of organic carbon and N at the organic fertilization system, as it may considerably concede the balance capacity of organic carbon and N at the intense fertilization system, which had a negative impact on the performance of crop rotation.","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48328924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Index evaluation of pigs and determination of selection limits","authors":"V. Pelikh, S. Ushakova, N. Pelikh","doi":"10.15407/AGRISP6.01.067","DOIUrl":"https://doi.org/10.15407/AGRISP6.01.067","url":null,"abstract":"Aim. To determine genetically and mathematically grounded target standards of selecting pigs for future gen- erations. To determine minimal selection limits for pigs to obtain high productivity traits. Methods. Common methods of evaluating the reproductive ability of sows, fattening and meat-fat qualities of progeny. Selection indexes were built by the method of standardized deviations according to M.V. Mykhailov. The target selec- tion limits for animals were determined using the table of Le Roy. Results. Selective-genetic parameters were determined by the main traits of reproductive ability, fattening and meat productivity of pigs. Selection indexes were estimated using the weighting coeffi cients of the traits for each group of pigs, used as a basis for minimal limits at different intensities of selection. The estimation of local progeny by selection indexes allowed ranging them depending on the level of productivity with the consideration of genotype. At 20 % selection, the minimal value of the\u0000reproductive ability index for the control group was 238.7 points. The minimal target threshold while selecting sires by the fattening traits of progeny within the 20 % selection was from 50.57 to 255.65 points for different groups. The minimal value of the index of fattening and meat traits was in the range from 270.05 to 606.94 points. Conclusions. The index estimation of pigs during the crossing allowed ranging them by the values of indexes. Minimal limits of selecting animals were determined and the selection of parental pairs with estimated productivity was optimized: in case of 20 % selection by multiple pregnancy with at least 11 animals, the area of “loin eye” – 30.5 – 44.5 sq.cm. It would be reasonable to select the animals, the pro- ductivity of progeny of which is above the determined limit, for further breeding from 238.70 to 606.94 points.","PeriodicalId":55933,"journal":{"name":"Agricultural Science and Practice","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43929832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}