Animal Husbandry of the Steppe of Ukraine最新文献

{"title":"Мarker-assisted selection of ukrainian local chicken breeds. overview of research results","authors":"M. Sakhatskyi, R. O. Kulibaba","doi":"10.31867/2786-6750.1.2.2022.150-156","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.150-156","url":null,"abstract":"The article presents a complex system of using of different types of molecular genetic markers in marker-assisted selection of Ukrainian local chicken breeds of egg and combined productivity. The main stages of selection work with different chicken breeds of Ukrainian selection are given considering the results of genetic variability research and analysis of productivity parameters of chicken with different genotypes by a number of DNA-markers. According to the results of the research, prospective marker systems identified by the set of quantitative trait loci, allelic variants of which are associated with productivity indicators. The formulas of perspective genotypes according to the complex of quantitative trait loci for chickens of Birkivska Barvista line A, Poltava clay line 14 and Rhode Island Red line 38 are given. For chicken breeds of combined productivity, the formulas of the desired genotypes formed on the egg or meat direction.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126374073","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 elements of cultivation of milk heifers on farms and complexes for milk production","authors":"S. F. Аntonenko, V. I. Pyskun","doi":"10.31867/2786-6750.1.2.2022.50-59","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.50-59","url":null,"abstract":"The article examines the problem of forming groups of heifers in the dairy period in order to obtain cows with high milk productivity, as increasing milk production is an important and complex problem of agricultural science and practice. \u0000The results of a study on improving the breeding of heifers of the Ukrainian black-and-white dairy breed in the conditions of the State Enterprise \"Kutuzivka\" of Kharkiv region are presented.Scientific and economic research was focused on substantiating the effectiveness of the influence of different numbers of heifers in the technological group on their growth and development in the milk period of ontogenesis. It was found that the actual difference in feed consumption in each series of experiments between animals in each group of 5-10-15-20 heads and a den area of 1.8 m2-2.2 m2 on deep straw litter was not. And when comparing technological groups of 5-20, 10-20, 15-20 heads, differences were revealed. \u0000In the production conditions of the dairy complex of SE Kutuzivka of Kharkiv region, the experiment was conducted in the spring-summer period. The experimental groups were formed as follows: for research, four technological groups of heifers with a population of 5, 10, 15 and 20 heads in each were selected, which were kept on a deep straw litter with a den area of one head 1.8–2.0 – 2.2 m2. \u0000It is experimentally proven that the use of growing heifers from 10 days of age to 6 months. loose on a deep straw litter in group sections of 5, 10 and 15 heads compared to the counterparts of 20 heads, contributed to an increase in live weight gain on average during the experiment by 20.5-22.5 % (P <0.05) . It is established that the technology of cultivation in the spring-summer period in the premises of light type contributes to the increase of the average daily increase from 27.2% to 30.3 % (P <0.05). \u0000Under these conditions of growing heifers in the technological groups of 5, 10 and 15 heads in comparison with the analogues of the group of 20 heads there was a reduction in feed consumption per 1 kg of live weight gain by 20.4 –26.5 %. \u0000Analysis of the results on the formation of technological groups of heifers in the production conditions of the dairy complex showed that the maintenance of heifers in the technological group of 15 heads and an area of 1.8 m2 per head is the best. Since the results of the comparative analysis of the complex efficiency of each of the options N(Ck)compared to the idealized, showed a significant advantage of this option, for which the target function according to the considered criteria was lower and was 0.0894. Other options were 1.0381 – 3.5839 times worse.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121067774","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":"Selection justification of the technology of intensive production of rabbit meat","authors":"I. Luchyn","doi":"10.31867/2786-6750.1.2.2022.171-179","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.171-179","url":null,"abstract":"The article presents the results of research on the productivity of rabbits of different genotypes (growth and development, slaughter and meat indicators, fur productivity); a comprehensive evaluation of the productivity of rabbits in the process of industrial hybridization was carried out. The following research methods were used in the work: zootechnical (productivity, growth and development, reproductive capacity), genetic, biometric (determination of average values and their errors, probabilities of research results). \u0000The study was carried out in the FG \"Elit\" of the Kolomyia district; PE \"Western Ukrainian Gardens\" of Halytsky District; PP Havrylyuk O. Ya. Bogorodchansky district. The method of pairs of analogues was used in the studies. Their selection took into account genotype, sex, age, live weight, origin, physiological state, lactation period, fertility, productivity (reproduction of female rabbits, fattening and slaughter indicators, etc.). Analogous animals in different groups had maximum similarity, and some differences were allowed within the group. \u0000The productivity of female rabbits and young rabbits was evaluated according to the index of reproductive qualities of the female rabbit (Luchin, 2004) and the index of comprehensive assessment (PKO) (Luchin, 2005). The received materials of scientific research were processed by the methods of variational statistics according to V.P. Kovalenko et al. (2010). \u0000It was established that different variants of crossing the maternal and paternal forms of the three-breed genotype of rabbits 4/8 white giant 3/8 local chinchilla 1/8 Flanders had different effects on the reproductive indicators of female rabbits and subsequent fattening indicators of young rabbits, in particular, average daily growth and waist width. \u0000A successful combination of maternal and paternal forms of rabbits (group 2) was revealed, which in the process of industrial hybridization ensured an increase in multifertility by 8.1 head or 2.5 % (р<0.05), high fertility by 64g or 6.25 % (р<0.05), milk yield by 2.8 kg or 7.2 % (p<0.05), nest weight at 35 days old by 13.4 % (p<0.01). The hybrid young obtained from female rabbits of group 2 (IVYAK + 5 %) was characterized by a higher body weight by 43.8 g or 10.3 % (p<0.001) and waist width by 6.15 cm or 12.2 % (p< 0.001) to 3 control groups. \u0000The positive result was achieved due to the effective combination of the initial forms, which in turn ensured high productivity of the stock (heterosis) of the final hybrid and its resistance to climatic and technological conditions of keeping.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126204545","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":"Reserves of increased vegetable protein in the northern part of the steppe of Ukraine","authors":"A. Cherenkov, M. Dudka","doi":"10.31867/2786-6750.1.2.2022.74-81","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.74-81","url":null,"abstract":"The problem of providing the population of Ukraine with food is of strategic importance and is gaining more and more relevance. The main condition for the further development of the country's livestock industry is the creation of a strong fodder base and the improvement of the nutritional quality of all types of farm animals. In this regard, the issue of anticipatory provision of animal husbandry needs with high-quality, protein-balanced, cheap feed is of particular importance.In the conditions of global climate change, the productivity of traditional local types of forage crops is becoming increasingly unstable over the years, there is a need to involve in field forage production highly adaptive both traditional and rare and new types of perennial and annual forage crops, to create effective models of winter, early and late spring and post-harvest annual agrophytocenoses. \u0000Research was conducted with traditional and rare and new species of perennial grasses and annual forage crops. The soil of the experimental site is ordinary low-humus heavy loamy chernozem. The sown area of the plots was 80–152 m2, the accounting plots – from 50–60 to 90–139 m2, repetition three to four times. \u0000The results of 25 years of research on reducing the protein deficiency in green fodder when growing perennial grasses and annual crops for field fodder production, obtained at the Erastivka Research Station of the Institute of Grain Crops in the conditions of insufficient moisture in the Northern Steppe of Ukraine, are given. The directions of intensification of field fodder production on the basis of effective use of arable land, creation of various annual agrophytocenoses of different periods of use and increase of their productivity with the application of a set of agrotechnological measures aimed at increasing the production of green fodder and improving their quality, rational use of the growing season and bioclimatic potential in the Northern Steppe are determined. of Ukraine \u0000The regularities of the growth and development of annual fodder crops in winter, spring and post-autumn sowings, the peculiarities of the formation of agrophytocenoses adapted to the soil and ecological conditions of the region and their fodder productivity depending on technological methods, first of all, the selection of the species composition, the optimization of the terms and methods of sowing, the norms of sowing components have been established in mixtures and mineral fertilizer.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130016882","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":"Current state and prospects of breeding of the askaniya population of the gray Ukrainian cattle breed","authors":"M. V. Iovenko, V. Voronenko, N. M. Fursa","doi":"10.31867/2786-6750.1.2.2022.37-49","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.37-49","url":null,"abstract":"Preservation of aboriginal breeds and populations of domestic animals is one of the main tasks set before the world community by the Convention on Biological Diversity. With the intensification of Ukrainian livestock breeding with the use of commercial imported breeds, there is a threat of loss of domestic unique gene pools that carry original sets of alleles responsible for high adaptability and resistance to environmental factors in combination with high productivity and reproduction. The article assesses the current state of the Askania gray Ukrainian breed population and the dynamics of its development based on the results of an expedition survey. Indicators of productivity and reproduction based on the results of the last valuation, dynamics of indicators of productivity and reproduction during 11 years for the period 2010-2020, genealogical structure and structure according to the degree of kinship were studied. The progressive development of the Askani population of the gray Ukrainian breed is determined, which is characterized by a probable increase in live weight, the intensity of growth of young, an increase in the intensity of reproduction and the efficiency of fertility with a decrease in the variability of indicators. \u0000The level of adaptability of the herd is high, which allows the animals to sustainably maintain the achieved phenotypic level, responding to the pressure of the external environment with insignificant annual deviations from the average herd. The high record indicators of live weight and growth of young animals revealed during the research put the Askani population of the gray Ukrainian breed at the level of world commercial meat breeds, such as Limousin, Hereford, Aberdeen Angus, light Aquitaine. \u0000The Askani population of the gray Ukrainian breed represents a highly valuable gene pool, promising for breeding in extreme climatic conditions, which must be distributed in different regions of Ukraine, increasing the number and area of breeding.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126869879","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":"Age characteristics of reproducive and maternal qualities of sheep of the prekos breed","authors":"I. Pomitun, N. Kosova, I. Korkh, L. Pankiv, A. Bezvesilna, N. Boyko, L. Pomitun, T. Danilova","doi":"10.31867/2786-6750.1.2.2022.132-139","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.132-139","url":null,"abstract":"The studies were carried out during 2020-2021 on ewes (515 heads) of the Kharkiv intrabreed type of the Prekos breed (KhTP) and their offspring in the conditions of the breeding plant of the State Enterprise of the Experimental Farm Gontarovka of the Institute of Animal Sciencе of the National Academy of Sciences of Ukraine. \u0000It was established that for 45 days during artificial insemination, the fertility of sheep (OP), calculated according to the results of their lambing, averaged 91.8 %. The highest rate was characterized by sheep that had the third lamb - 97.3 %. According to the results of 4-6 lambs, a relatively stable high fertility of queens was noted - 93.4-95.3 %. Significant downward deviations of this indicator were observed in ewes used for reproduction in the first and second years, and especially in animals with 7 and 8 or more lambing. Analysis of variance found that the age factor of ewes is highly likely (p<0.01) associated with their fertility, and the strength of its influence ŋх 2 is 0.491. \u0000The factor of individual rams-producers also influences (OP) ewes. The variability due to the influence of this factor varied from 87 to 95.1 %. \u0000Different (OP) of ewes, due to their age, had a corresponding effect on the indicators of their multiple pregnancy (P), calculated per 100 inseminated heads. This indicator in ewes for the first fifth lamb ranged from 113 to 150 lambs. At the same time, there is a clear trend of its growth due to the increase in the number of reproductive years. However, this trend is not linear and is valid for animals with 1-6 lambs. Ewes with 7 and 8 or more lambs worsen their reproductive ability rather sharply.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411708","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":"Digestibility of nutrients in quails at different levels of energy in feed","authors":"V. Otchenashko","doi":"10.31867/2786-6750.1.2.2022.166-170","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.166-170","url":null,"abstract":"The relevance of the study is due to the limited existing research, mainly on Japanese quails, the lack of data on the dynamics of changes in nutrient use during the productive cycle of meat quails and the impact of energy levels. The aim of the study is to study the dynamics and relationship of feed nutrient digestibility with energy levels of pharaoh laying quails. The experiment was conducted by the method of groups. According to the scheme of the experiment at the age of 45 days, 150 quails were selected, from which, according to the principle of analogous groups, 5 groups were formed – control and 4 experimental, 30 heads (25 females and 5 males) in each. The level of metabolic energy in the feed of the control group was 13.4 MJ / kg, the 2nd group – 10.7 MJ, the 3rd group – 12.1 MJ, the 4th group – 14.7 MJ, the 5th group – 16.1 MJ Quails of all groups received loose complete feed, compiled according to special recipes. During the experiment, three series of physiological experiments were conducted to study the digestibility of nutrients. For this purpose, three laying hens at 116, 200 and 284 days of age were selected from each group according to the principle of analogues. Zootechnical analysis of samples was carried out according to generally accepted methods according to the Weende analysis scheme. It is established that the use of compound feeds with different content of metabolic energy affects the digestibility of nutrients. The highest levels of nutrient utilization were observed when feeding feed with a metabolic energy content of 1.34 MJ. The nature of the changes depends largely on the age of the quails. The absence of a noticeable difference in digestibility during 2-5 months of laying for feeding feeds with an energy content of 1.09 to 1.34 MJ is a prerequisite for the development of special feeding programs aimed at minimizing costs. The presence of insignificant influence of the level of energy nutrition of quails on the digestibility of protein (rs = - 0.34, P> 0.1) was noted. The age of quails is inversely related to protein digestibility (rs = - 0.57; P <0.05).","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122237835","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":"Microelement provision of cows of the western region of Ukraine","authors":"V. Vlizlo, M. I. Sedilo","doi":"10.31867/2786-6750.1.2.2022.90-94","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.90-94","url":null,"abstract":"The article presents the results of research on the content of trace elements: Cobalt, Zinc, Copper and Manganese in the soils, fodder and blood of cows of the black and spotted Ukrainian breed in farms from the mountain, foothill and plain zones of the Western region of Ukraine. The western biogeochemical zone of Ukraine includes Zakarpattia, Lviv, Chernivtsi, Ternopil, Volyn and Rivne regions. \u0000It was established (mg per 1 kg of soil) that the amount of Cobalt was 0.5 mg/kg; Cuprum – 7.2; Zinc – 3.1; Manganese – 6.5; in the foothills – Cobalt – 0.6; Cuprum – 4.5; Zinc – 1.8; Manganese – 32; in the plain – Cobalt – 0.55; Cuprum – 5.0; Zinc – 1.5; Manganese – 39. During the analysis of the rations, it was established that the provision of other mineral substances did not meet the physiological needs. Thus, in the diets of cows from mountain, foothill and plain regions, an excess of Calcium, Magnesium, Potassium and Ferrum and a deficiency of Phosphorus, Sulfur, Zinc, Cobalt, Iodine and Copper were observed. \u0000Clinical studies of cows indicate the prevalence of trace element diseases in them. Anemia of visible mucous membranes and non-pigmented areas of the skin was recorded in cows, the number of erythrocytes in animals of the mountain zone was 5.7±0.29 T/l, in the foothills – 5.8±0.29, and in the plains – 6.2±0.30 T / l. The hemoglobin content in the blood of cows in the mountain zone was at the level of 97.0±5.40 g/l, in the foothills – 94.0±5.30, and in the plain zone – 98.0±3.70 g/l. Physiological values of the number of erythrocytes in the blood of cows range from 5.0–7.5 T/l, and the hemoglobin content – 95–125 g/l.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132174006","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":"Life expectancy and productivity of sows of different types of adaptation","authors":"V. Khalak","doi":"10.31867/2786-6750.1.2.2022.124-131","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.124-131","url":null,"abstract":"The paper presents the results of studies of life expectancy and reproductive qualities of sows of plus-adaptive, modal and minus-adaptive types of adaptation, the criteria for the selection of highly productive animals according to the index \"pig-uterus adaptation type (TASv) (methodology of the author of the article) is determined, the economic efficiency of the use of animals in experimental groups is calculated The research was carried out in the agricultural formations of the Dnipropetrovsk region and the laboratory of animal husbandry of the State University \"Institute of Grain Crops of the National Academy of Sciences\". The work was carried out according to the scientific research program No. 31 \"Genetic improvement of agricultural animals, their reproduction and preservation of biodiversity (Genetics, preservation and reproduction of biological resources in animal husbandry)\". \u0000Evaluation of sows by indicators of long-term adaptation and reproductive qualities was carried out taking into account the following characteristics: life expectancy, months; duration of tribal use, months; received farts; all piglets were obtained, goal; received live piglets, goal; multifertility, goal; nest weight at the time of weaning at the age of 30 days, kg; preservation of piglets until weaning, %. Biometric analysis of research results was carried out according to the methods of V.P. Kovalenko et al. (2010). \u0000The results of the study showed that the sows of the controlled population belong to the I class and the elite class according to the average indicators of multifertility and nest weight at the time of weaning. The coefficient of variation of these traits in sows of the large white breed ranges from 9.48 to 10.02%. Taking into account the intrabreed differentiation of sows according to the index \"adaptation type of the sow\", a reliable difference between animals of plus- and minus adaptive types was established for life expectancy, the duration of breeding use of the sow, as well as the indicators \"obtained farts\", \"obtained live piglets total, goal\", \"multifertility, head\" and \"weight of the nest at the time of weaning at the age of 30 days, kg\". The number of reliable pairwise correlation coefficients between signs of long-term adaptation and reproductive qualities of sows of the large white breed is 57.14%. This biometric indicator ranges from –0.137 (tr=0.81) to +0.987 (tr=382.10). The criterion for selecting highly productive sows according to the \"type of sow adaptation\" index is 29.88-45.21 points. \u0000The maximum increase in additional production was obtained from sows of the plus-adaptive type +2.88%, and its value is +79.51 UAH. / head / farrowing","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124187319","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":"INFLUENCE OF GENETIC FACTORS ON INDICATORS LIFETIME PRODUCTIVITY OF DAIRY CATTLE","authors":"L. Khmelnychyi","doi":"10.31867/2786-6750.1.2.2022.26-36","DOIUrl":"https://doi.org/10.31867/2786-6750.1.2.2022.26-36","url":null,"abstract":"Researches results of cows of the Ukrainian Red-and-White lifetime productivity dairy breed on traits of duration of economic use within the limits of an estimation of crossbred genotypes and genealogical formations are resulted. Reliable influence of the conditional share of Holstein breed heredity on the economic use duration and lifetime milk productivity of cows has been established. For the longest time in the herd, crossbred cows with Holstein bloodline of 25.0 % and crossbreeds with heredity of the parent breed up to 50.0 % were used. At the final stage of crossing in animals with blood ratio of 62.5-87.5 %, a noticeable reduction in the duration of economic use was observed. Animals with Holstein bloodlines of 75.0 and 87.5% were inferior to groups of crossbred cows with heredity of 25.0 and 50.0% with reliable difference of 590 and 633 (P<0.001), 432 and 475 (P<0.001) days, respectively. \u0000At the same time, from cows with a share of Holstein blood of 87.5 %, the highest lifetime milk yield was obtained with an excess of cows groups of other genotypes by 1250-3260 kg of milk with reliable difference compared to crossbred genotypes with bloodness - 25.0 % (P<0.001), 37.5 (P<0.001), 50.0 (P<0.01) and 62.5 % (P<0.05). The hereditary influence of lines on the indicators of lifetime productivity in intralinear selection and in some variants of interlinear combinations was proved. The influence of genealogical formations on longevity indicators in in-line selection was evidenced by reliable difference between the extreme variants of the assessed lines on the basis of economic use (651 days; P <0.001) and liftime milk yield (14267 kg; P <0.001). According to the results of interline selection in different variants of paternal and maternal lines combinations, significant variability of the offspring obtained from these variants was established, according to the estimated traits of duration of use and lifetume milk production. Cows obtained in all variants of interlinear selection of parental lines Enhancer, Hannover and Valiant with sires of maternal line S. Cavalier have always had high indicators of duration of economic use and lifetime milk productivity.","PeriodicalId":289036,"journal":{"name":"Animal Husbandry of the Steppe of Ukraine","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128843098","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}