The article presents the results of studies conducted at the veterinary clinic «Jean» in the city of Pavlodar. It is noted, that for the period 2013-2017. 348 cases of disease in dogs were registered by pyroplasmosis – a protozoal disease caused by parasitic organs of the genus Piroplasma. The authors described the clinical symptoms of disease in animals, as well as the nature of the flow of infectious diseases.

This article discusses the use of probiotic Clostat method of adding a dry mixture in the combined feed in its production. This probiotic has a high resistance to enzymes of the gastrointestinal tract of animals, antagonistic activity to pathogenic and opportunistic microorganisms. This probiotic normalizes the intestinal microflora, increases the resistance of farm animals. Probiotic Clostet improves the digestion process, which affects positively the transition of weaned piglets on self-catering.

This article describes the effect of pre- and probiotics on the condition of intestinal microflora for newborn calves. It has been established that in the intestines of calves, in addition to lactic and bifidobacteria, conditionally pathogenic bacteria such as E. coli, staphylococcus and streptococcus are contained. When taking pre- and probiotics in the experimental groups of animals, a decrease in the content of conditionally pathogenic microflora was observed with a dynamic increase in obligate, which indicates a positive effect on the formation of intestinal microbiocenosis during the milk period.

This article describes the factors that adversely affect the development of the body of young animals and contribute to reduce their productivity. One of the ways to solve this problem is the use of probiotic preparations, in this case Vetom 1.1. Research methods are presented, an analysis of the data obtained is made, according to which a conclusion is drawn about the high effectiveness of the use of probiotic Vetom 1.1 in swine production

The proposed article presents theoretical studies of the treatment and prevention of intestinal infections of farm animals and birds. The relevance of the topic is due to the emergence and spread of infections resistant to antibiotics associated with the widespread use of antibiotics in clinical medicine, veterinary medicine and agriculture, which reduces the effectiveness of antibiotics in the fight against intestinal infectious diseases and their treatment

The article is devoted to the current problem of differential diagnosis of diseases of viral etiology in small domestic animals. Viral diseases of dogs and cats are widespread among both high-breed and outbred animals. The spread of diseases is facilitated by an increase in the number of small domestic animals, the popularization of pet keeping, and cross-border operations related to the movement of animals. The possibility of using means and methods of diagnosing adenovirus infection in cattle, tentative diagnosis and differentiation of infectious hepatitis in dogs from plague of carnivores and parvovirus enteritis is being considered. Reducing the timing of diagnosis helps to increase the effectiveness of ongoing therapeutic and antiepizootic measures. The analysis of the place of carnivorous infectious hepatitis in the structure of the incidence of dogs is given. The article describes the research in the field of the possibility of using the established antigenic relationship of representatives of the adenovirus family for the in vivo and posthumous diagnosis of infectious diseases of small pets. The authors proposed a method for performing the production of serological reactions for the diagnosis of infectious hepatitis in dogs using diagnostic tools for adenovirus infection in cattle.

The article presents studies on the morphological picture of the blood of fish in a comparative aspect, depending on age and species. In recent years, the influence of anthropogenic factors on the ecosystem of water bodies has intensified. In this regard, the main direction of solving the problems of ichthy -epizootological situations is new areas in veterinary medicine, in particular, hematological recognition of shaped elements in the blood of fish. To identify and understand the state of the fish organism, which they reflect, the researcher must first of all correctly determine these forms of cells in the blood, especially this applies to white blood cells. Our review is brief and does not pretend to be completely complete literature data on this issue. All this together gives a complex morphological picture of the blood of fish, which is difficult to typify. Unlike higher vertebrates, fish lack bone marrow and lymph nodes, hematopoiesis occurs both in organs, which include reticular syncytium (gill apparatus, kidneys, lymphoid organ), and vascular endothelium of the gill apparatus and heart and spleen and, in some cases, intestinal mucosa. In bone fish, the anterior part of the kidneys is the main organ of hematopoiesis; hematopoiesis also occurs in the lymphoid organs and in the spleen. The purpose of this research is to study the morphological picture of the blood of fish in a comparative aspect, depending on age and species. 3-7 animals from each age group of fish were examined on average. To study the morphological composition of blood from fish, blood was taken from gill vessels and from the heart cavity. In the process of research, it was found that the peculiarity of fish is the presence in the blood of both mature and young red blood cells, red blood cells have nuclei. Bony fish have four types of myeloid cells at all stages of development, known in the hematology of higher vertebrates and humans. A distinctive feature of fish granulocytes is the ability to observe leukocytes in all successive stages of filling the cytoplasm with granules, and the nucleus of th ese cells is very rarely lobed. Unlike fish, in mammals it is very difficult to distinguish between the stages of development of basophils and eosinophils (myelocytes, juvenile, stab and segmented), since the segmentation of the nucleus is weakly expressed , and the number of granules does not increase as the cells mature. It can be noted that the studies initiated can contribute to determining the choice of hematological studies. Given the above factors, a detailed epidemiological classification of hematolo gical studies will be obtained. The research results make certain additions to the procedures of veterinary-hematological studies in the field of ichthyopathology. In the future, research will continue in the direction of hematological diagnosis of fish di seases and prerequisites will be created for a detailed epidemiological classification of hematological studies.

The article is devoted to the current problem of differential diagnosis of diseases of viral etiology in farm animals. Viral diseases are currently widespread, occupy a leading role in the infectious pathology of farm animals, causing enormous economic damage. Given the magnitude of animal vaccine prophylaxis, in order to increase the effectiveness of antiepizootic measures, the urgent issue i s the development of methods for the rapid and effective detection and differentiation of field and vaccine strains of the infectious rhinotracheitis virus in cattle. The possibility of using a polymerase chain reaction to identify and differentiate a vacc ine strain from epizootic strains and isolators of the cattle infectious rhinotracheitis virus is considered. In the process of research, a PCR-RFLP analysis method was developed to detect the IRT virus in the test material. The PCRRFLP analysis method was used to identify and differentiate the vaccine strain TK-A form epizootic strains and isolators of the cattle IRT virus. The principle of PCR, based on repeated repetition of DNA cycles, annealing and synthesis, which leads to an increase in the number of specific DNA fragments of the pathogen, allows you to take into account the results of PCR in an agarose gel. Analysis time is about 30 hours. The sensitivity of detecting viral DNA is 1-10 picograms (102 TCD). Due to characteristics such as relative simplicity and reaction rate, high sensitivity, specificity and reproducibility, PCR has recently become widespread in basic and applied research in various fields of biological science, including veterinary virology. The results obtained during the studies show that the use of PCR-RFLP allows to differentiate field and vaccine strains and isolates of the IRT virus with a high degree of reliability. The use of PCR -RFLP analysis increases the efficiency and informativeness of studies in the molecular epizootol ogy of cattle RTI, as it allows not only to identify the DNA of different virus strains regardless of their nature, but also to differentiate between them, including differentiating the strain TK-A used for the production of attenuated vaccines against epizootic strains and isolates of the virus.

The work is intended to determine the etiopathogenetic principles of animal prevention in gynecological pathology and issue a theoretical justification. At the same time, improving preventive measures aimed at preserving their health, increasing the productivity of animals in modern conditions of animal husbandry and ensuring high productivity of cows. In this regard, the main task is to develop ways to increase insemination of cows with the use of complex and homeopathic treatment. For the first time in the East Kazakhstan region, new scientific data on the main etiological factors leading to gynecological pathology and infertility of cows were obtained. Work has been carried out to improve measures aimed at preventing infertility of cows in the conditions of dairy farming in this region and stimulating increased insemination. New schemes for stimulating increased insemination using hormonal, homeopathic and other drugs have been tested. As a result, an increase in the productivity of cows was revealed, and stimulation schemes were introduced. For the first time in the farm" kamyshinskoye" an economic assessment of the damage from infertility of cows is given. Research work is done between 2016 and 2019 years by the Department of veterinary medicine of the State University named after Shakarim, in the laboratory "Agrotechnopark" of the State University named after Shakarim and national University of veterinary medicine and biotechnology named after Lviv and in the farm "kamyshinskoye" of the Shemonaikha district of East Kazakhstan region. To enhance the insemination of cows 3 groups of animals was obtained: animals of group I were not subjected to insemination; animals of group II for 1-3 hours before insemination grafted surfagon 3 ml (15 mg), 15 ml of Catosal, 15 ml habilita-Se, 10 ml uteroton; 8 days prior to insemination progesterone 2,5% 2 ml, Catosal 15 ml, habilita-Se 15 ml; cows of group III for 30-60 minutes before insemination were given Ovariovitis, and after fertilization Ovariovitis for 25-30 days and liarcine 5 ml. According to the results of drawings based on complex and homeopathic preparations, low costs were shown.

Main problem: The genus Morbillivirus of the family Paramyxoviridae includes agents of morbilli, plague of cattle, carnivores and small ruminants. Plague agent of carnivores causes a dangerous disease of fur animals and dogs, which in many cases ends in death. The disease is widespread everywhere, including Kazakhstan. In our country, the mixed form of the disease is most common, and the least common is the skin and nervous forms. The chronic course of plague is observed to a greater extent with the nervous form, subacute - with mixed and intestinal, acute - with cutaneous and pulmonary forms of the disease. Goal: Veterinarians have significant difficulties in diagnosing carnivorous plague. Despite the fact that serological methods for diagnosing this infection have been developed and applied for research purposes, the lack of commercial diagnostic preparations on sale significantly restrains their use by practical veterinary workers. Therefore, the diagnosis of plague of carnivores is mainly established on the basis of the symptom complex of the disease and the data of epizootic and pathological anatomical studies, the results of which are largely similar to those in some other diseases of carnivores. Scientific research in the field of means and methods of laboratory diagnostics of carnivore plague, applicable in practical veterinary medicine, is in great demand. Methods: Considering the fact that the carnivores plague and cattle plague are antigenically closely related, studies were carried out to determine the possibility of using means and methods for diagnosing cattle plague for serological diagnosis of carnivores plague. Results and their significance: It has been established that the use of means and methods for diagnosing cattle plague makes it possible to diagnose carnivore plague at all stages of the course of the disease, their use makes it possible to reliably establish a diagnosis of the disease in fur-bearing animals and dogs in a short time after the receipt of samples of material for research, even in cases of mixed viral and bacterial infections; and also to differentiate the plague of carnivores from diseases similar to it - parvovirus enteritis, infectious hepatitis and a number of others.

Complex research is carried out on the rational use of natural pastures with seasonal use in a specific area. The research was conducted in 2015-2017 on the lands of “Batyr” farm in Korday district of Zhambyl region. The pasture lands of the farm consists of 5 independent sites and are located in 3 geographical areas: foothill-steppe (950 hа), foothill-dry steppe (1370 hа) and foothill-semi-desert (1880 hа). The total area of distant pastures is 4.200 hectares. As a result of conducting of geobotanical researches, the farm territory of peasant farm "Batyr" in Korday district of Zhambyl region was divided into seasons (spring-summer-autumn) of their use, the yield of natural herbage and live weight gain of animals was determined. Results of accounting of productivity of natural herbages on zones, seasons of year are given in article and the gain of livemass of animals for the pasturable period is defined. When determining efficiency of sheep it is revealed that higher additional weight of a liveweight is received in experimental group of animal. The seasonal pasture on average in three years of researches at the end of the pasturable period provided an increase of a live weight of rams on 3.370 kg/head at ewes on 8.020 kg/head and lambs of birth year on 8.640 kg/head is more in comparison with control groups of animals. It should be noted that for the pasturable period the increase of alive mass of animals in experimental group in 2017 is higher than a research in comparison with previous years. In 2017 at a pasture of animals on seasonal sites it was applied intra seasonal pasture turnover at which unproductive driving of animals in search of a forage on the grazing square is practically reduced three times, besides degradation of the pasturable territory is completely excluded. It was found that the use of seasonal use of pastures provides more weight gain studied animals compared to animals that graze in one place with an unsystematic manner of grazing. The implementation of the results created the conditions for the restoration of degraded pastures with an increase in the growth and development of vegetation cover up to 15-18 % and an increase in livestock production through rational grazing up to 12 %.

In the last decades of the twentieth century, in the national economy of many countries, organochlorine pesticides were most widely used, characterized by stability in the external environment, the ability to cumulate in various tissues of organisms. Lindane (the gamma isomer of hexachlorocyclohexane) is listed as a restricted persistent organic pollutant and is an ecotoxic substance with severe and chronic effects on the human body. The study of the effect of lindane on carbohydrate metabolism at the present stage is still insufficient. This fact led to the study of the effect of γ-HCH on the insulinogenic function of the pancreas in in vivo and in vitro experiments. In experiments in vivo, the animals of the experimental groups were once orally administered γ-HCH at a dose equal to 1/5 DL50. Isolated pancreatic islets, precipitated in vitro and fixed on mica plates, were exposed to γ-HCH in amounts equivalent to 1/5 to 1/4 DL50. Paraffin sections of pancreatic tissue from experimental and control animals were stained with aldehyde fuchsin according to Gomori, and tissue preparations were also examined by a highly specific method for detecting insulin in β-cells using diethylpseudoisocyanin staining, followed by examination of the preparations in the ultraviolet light of a luminescent microscope.The same methods were used to study preparations of isolated pancreatic islet tissue on the 4th day of cultivation. The influence of orally administered γ-HCH on the level of immunoreactive insulin in the blood of experimental animals was also studied. The insulin level was determined by the enzymatic-immunological method. The concentration of IRI was established before the start of the experiment and 4-4.5 hours after acute inoculation. Results and their significance. In the study of stained preparations of the pancreas of experimental animals, numerous islets of ordinary sizes were revealed, the cytoplasm of which was filled with aldehyde-fuccin granularity in quantities indistinguishable from those observed by microscopy of preparations of control animals. The value of the fluorescence coefficient in the histofluorimetric study of the control and experimental preparations did not differ significantly. However, the content of IRI in the blood serum showed a distinct decrease in the first hours after priming. In experiments in vitro, when studying the effect of γ-HCH on cultured tissue, introduced into the nutrient medium on the second day, in the field of view of the microscope, single, small pancreatic islets were revealed. Their number on a constant area of the plates was significantly lower than the value of the same indicator in the study of control preparations. Thus it has been shown that γ-HCH does not affect the histostructure of the endocrine pancreas, but causes a significant decrease in IRI in the blood serum, as well as a change in the histochemical characteristics of cultured β-cells.

This article discusses the current data on the biochemical properties of bacteria of the genus Lactobacillus and their use in industry, particularly in dairy production and biotechnology. Microorganisms of the genus Lactobacillus have antagonistic activity against pathogenic microorganisms and perform an immunomodulatory function. The positive effect of lactobacilli on human health explains their active use in probiotics. The positive effects of normal intestinal microflora and probiotics are mainly due to bifidobacteria and lactobacilli. In probiotic therapy, various types of bacteria of the genus Lactobacillus are used, such as: L. acidophilus, L. rhamnosus, L. plantarum, L. fermentum, L. delbrueckii subsp. bulgaricus, L. casei, L. paracasei. In recent years, the biotechnology of probiotics has been intensively developing - drugs used for the correction and prevention of microecological disorders in the gastrointestinal tract of humans and animals. An urgent issue is obtaining new data on the biological properties of lactobacilli, creating new probiotic preparations based on them using modified approaches to cultivation. The results of determining the species L. acidophilus L. casei, L. rhamnosus, L. paracasei, obtained by the classical biochemical identification method based on saccharolytic activity, complicating species identification, are comparable to the molecular genetic method. In the case of L. casei, L. rhamnosus, L. paracasei, it is necessary to carry out modern identification methods based on the polymerase chain reaction, since their biochemical properties are similar, which makes it difficult to carry out species identification. The molecular genetic method is a valuable addition to the intergeneric and species identification of lactobacilli, given the variability of the classical biochemical method.

Main problem: The development of the genetic potential of poultry, as well as the receipt of high-quality eggs for collection or further incubation, are possible only if rational and correct feeding of the broodstock and, more importantly, the young during its rearing period is observed. During this period, high-quality protein nutrition occupies an important place, which determines the level of productivity, stable growth, reproductive ability of the bird, as well as the state of health during the feeding period. Protein deficiency always remains an urgent problem for agricultural land, whose main activity is aimed at breeding dairy and meat animals. In this regard, research in the field of finding the use of non-traditional protein feed is of great need. If we summarize the modern achievements in the field of protein and aminoacid nutrition of poultry, we can find the most profitable way to obtain feed additives in industrial production. The studies, the results of which will be described in this article, are aimed at studying the possibility, experimental substantiation of the optimal dosage and the effectiveness of using the feed additive from crustaceans Artemia salina in the diets of chickens of the egg-meat direction of productivity [1]. Purpose: To study the possibility, experimental substantiation of the optimal dosage and the effectiveness of the use of the feed additive from crustaceans Artemia salina in the diet of chickens of the egg-meat direction of productivity. Methods: Analysis and generalization of theoretical information Results and their significance: This article presents the results of the analysis and generalization of theoretical material. The theoretical significance is determined by the fact that it is invested in scientific and practical problems related directly to solving urgent problems, increasing the efficiency, competitiveness and quality of domestic poultry products.

The variety of species and forms of parasites of agricultural animals and the features of their life cycles are the basic foundation for the production of different types and medical forms of antiparasite medicine. In the treatment of the parasitic diseases of agricultural animals, one of the main factors is that the veterinary doctors have the knowledge on the mechanics, efficiency and the safety for humans and environment of the medicine being used. Taking into account high pathogenicity and resistance of parasitic organisms and their ability to adapt to effect of medicine, it is crucial to permanently monitor the efficiency of the applied anthelmintic drugs, including the new drugs offered by veterinary services. This article will describe the results of the research on pharmacodynamic and pharmacokinetic parameters of «Ivermectinum», «Ivermec», «Aversect-1», «Аvrsect-2», «Аivin» drugs and their methods of application with the consideration of terms of maintenance and immune status of cattle herds in Mayconyr village (Irtysh district, Pavlodar region). A comparative analysis of efficiency of the above mentioned drugs in dehelmintization and treatment of cattle was conducted with the results provided. The recommendations and the restrictions on use of the drugs were determined considering the farm condition. The experimental research of the aforementioned broad-spectrum drugs was conducted strictly following the rules of asepsis and instructions on application. The total number of replacement heifers subjected to the dehelmintization under the method of analogues is 150 units. Anthelmintic treatment was conducted two times a year - in springtime (March-April) before pasturage, and fall time (September-October) before confining the cattle in the stable. Coprological study on intestinal helminthes of the examined cattle was conducted in Irtysh RVL of the Pavlodar regional branch of RVE RVL VCaSC MA RK by ovoscopical, flotation and larvoscopical methods. There is a comparative analysis on the efficiency of avermectin group antiparasitic drugs applied twice a year for cattle dehelmintization. The recommendations on the use of the aforementioned drugs for dehelmentization and prevention of parasitic diseases are provided and the requirements for the use were determined.

In modern conditions, the problem of the incidence of cows with high productivity in the postpartum period is relevant. It is these animals that are more susceptible to various diseases, primarily due to violations of the technology of keeping and feeding, weak body resistance, heavy loads during fruiting and milk production. It is known that as a result of various metabolic disorders, calving of cows in farms proceeds with various deviations. The lack of calcium in the blood due to hormonal disorders leads to hypocalcemia and paresis after calving, which is often the cause of death of animals. Therefore, the improvement of prevention schemes and treatment of puerperal paresis in cows is very relevant. Purpose of the article – Improvement of preventive and therapeutic measures for postpartum paresis in cows on the basis of the Tassu farm in Akmola district. The work was carried out under production conditions on a livestock farm in the Akmola region, in the farm "Tassu" in the spring and summer. The object of the study were black-motley cows with a pregnancy period of 250-260 days. 22 animals were selected in the experimental group, 12 animals in the control group. The average weight of animals is 567 ± 34.5 kg, age 5-6 years. The cows of the experimental group received injections of the drug Karsulen, which included: 2 % Cardus marianus D3, 1 % Sulfur D6 and 1 % Arsenycum album D6. Karsulen was administered to cows intramuscularly or subcutaneously at the rate of 1 ml per 100 kg of animal weight, the dose volume should not be less than 5 ml per animal. In the postpartum period, in the complex therapy of postpartum paresis in cows, Karsulen is used intramuscularly or subcutaneously 1-2 times a day. The use of the drug Karsulen with the composition: 1 % Cardus marianus D3, 1 % Sulfur D6 and 1 % Arsenycum album D6 has a regulatory effect on protein, carbohydrate, fat metabolism, restores impaired function of the gastrointestinal tract, liver and kidneys.

Main problem: At present, service, decorative and hunting dog breeding is intensively developing in Russia and in the Tula region. So, in 2020, 119 high-breed puppies were registered in the Book of Pedigree Breeding, and in 2021 already 164 puppies, mostly decorative and service breeds. Thus, the number of pedigreed dogs susceptible to various infectious diseases is increasing annually. Canine distemper is one of the most widespread viral diseases of dogs all over the world, including in Russia. Analyzing the "Patient Admission Logs" of veterinary clinics in the city of Tula, it was found that 44 % of dogs that fell ill with diseases of infectious etiology were diagnosed with canine distemper. Purpose: The aim of our research was to study the epizootological features of the course of canine distemper among dogs in the Tula region of Russia. To achieve the intended goal, it was necessary to solve the following problem: to analyze the breed and age factors for the incidence of canine distemper. Methods: Analysis of data from private veterinary clinics reporting on the incidence of small domestic animals was used. Results and their significance: As a result of studying the epizootic situation of canine distemper among dogs, the following data were obtained: The disease is observed throughout the year and has the character of undamped fluctuations subject to sharp seasonal changes. The maximum number of diseased dogs in all years of observation is recorded in March - 6.2 cases per 1000 individuals. It has been established that among the infectious diseases of dogs, distemper occupies the first place, and there is an annual increase in the number of dogs with distemper.

Injuries among domestic animals account for 50-70 % of all non-communicable diseases. Fractures of bones, mainly limbs, occur in 44.5 % of cases. The main goal of fracture treatment is to restore normal function and movement of the limb, and the ways in which this is done are varied. Preference is given to methods that do not constrain the movement of the limb, allowing the animal to use it during the treatment period. Purpose: This article discusses the method of bone osteosynthesis, which has proven itself in the treatment of bone fractures, and is relevant today in veterinary medicine. The main study was conducted on the basis of the veterinary clinic "Shans" in Pavlodar. For osteosynthesis, plates for osteosynthesis and screws made of titanium alloy were used. This is due to the fact that when in contact with each other, the metal that fixes bone fragments can oxidize. Animals come to the clinic as a result of injuries that lead to fractures. The most common causes include falls from a height, motor vehicles, careless or rough handling of animals, and contact with other animals. When a fracture is established by obvious signs or if a fracture is suspected, such patients are preliminarily sent for x-rays. Upon receipt of an X-ray image and with the consent of the owner of the animal, osteosynthesis is performed. When accessing bone fragments, the incision was made along the muscle fibers. Osteosynthesis was performed according to the method described by V.M. Shapovalov (2009). The general condition of the animals after osteosynthesis was restored after 3-5 days. All animals, after bone osteosynthesis, completely relied on the limb. Contractures of adjacent joints and muscle atrophy were not determined. Plain osteosynthesis of the femur, in the presence of the necessary instrument and consumables, is not very difficult to perform. Performing bone osteosynthesis in the early stages makes it possible to include the limb in the locomotory act, as a result of which the animal actively uses the limb during the rehabilitation period.

In this article, comprehensive studies have been conducted on the effective use of natural pastures in conditions of vertical zonality in the project territory of Batyr Korday district (Zhambyl region). The data presented shows how important it is to comply with the norms and loads of pastures for further preservation of pasture yields and prevention of degradation. Consequently, there is a need to develop effective and scientifically-based systems of pasture turnover and the introduction of measures to restore pasture lands in the Zhambyl region, taking into account the peculiarities of the climate and geo-botanical indicators. Pasture lands make up about seventy percent of the entire territory of the Republic of Kazakhstan. The potential productivity of these lands reaches twenty-five and more million tons of fodder units. Pasture is the main renewable forage plant resource. It should be emphasized that haphazard use has led to the fact that land degradation processes occur on 27.5 million hectares of pastures, feed capacity decreases, biological diversity decreases, erosion processes manifest themselves, etc. All this requires the development of science-based approaches to the exploitation of pasture resources, compliance with the basic elements of rational grazing. The current situation may have a twofold path of development. The first way is the absence of strategic initiatives for the effective use of pastures for small producers will lead to a final reduction in the feed capacity of the pastures used. And the second way is small and large-scale use of the huge forage potential of the restored pastures.

The production of vaccine preparations before release requires standardization of their immunobiological parameters, especially safety and immunogenic efficacy. An indicator of the immunogenic effectiveness of the lumpy skin disease vaccine is the resistance of vaccinated cattle against the virulent virus. However, according to preliminary studies, the virulent control virus did not always cause clinical disease with characteristic symptoms when infected subcutaneously. The purpose is to develop a biological model in the form of a complex consisting of a pathogenic virus, a method of infection and a susceptible animal to assess the immunogenicity of a lumpy skin disease vaccine. Local cattle, intact from lumpy dermatitis, were used to reproduce lumpy dermatitis and develop the causative agent of the disease. As the initial infectious virus, we used a 20 % tissue suspension of nodules (skin nodules) obtained from cattle that fell ill with lumpy dermatitis in the field in the Atyrau region in 2016. As a viral mass to control immunogenicity, a 20 % suspension of skin nodules and edematous skin tissue at the site of the pathogen injection, obtained after the “refreshment” of the virus in animals, were used. The disease was reproduced by infection with the test suspension of the virus intradermally, subcutaneously, intravenously at a dose of 0.5 cm3 and titration on the skin of the animal. The effectiveness of the biological model was assessed by morbidity, severity of the course and severity of the manifestation of the disease. During primary intradermal infection with a field isolate of the virus, the disease manifested itself in one of three animals in the form of hyperthermia, depression, lacrimation, and the appearance of several nodular nodules in the skin of animals. The refreshed tissue virus caused clinical disease both in subcutaneous, intradermal and intravenous infection. But the clinical signs of the disease were more pronounced with intradermal inoculation of the virus, and with intravenous inoculation, it manifested itself in a more severe form with a fatal outcome. Inoculation of the virus intradermally into different areas of the skin led to the development of an independent skin lesion in each infected point in the form of painful edema, followed by necrosis, the size and intensity of which depended on the dose of the injected virus. This development of skin pathology made it possible to work out a method for determining the virus titer in vivo. The tissue virus obtained from the edematous tissue at the site of the pathogen injection was guaranteed to cause clinical disease in cattle during intradermal inoculation and made it possible to evaluate the immunogenic efficacy of the produced batches of vaccine against lumpy dermatitis.

In this article, comprehensive studies have been conducted on the rational use of natural pastures, taking into account the seasons and typology, which allows increasing the grazing capacity of forage lands, as well as obtaining high-grade valuable and cheap livestock products. Rational maintenance of livestock on pastures not only reduces fuel costs by 6-7 times, equipment, labor and total feed costs by 2-3 times compared to the content of grazed animals, but also improves metabolic processes and reproductive functions of animals. This determines the great advantage of pasture feeding in the production of important livestock products. In the conditions of vertical zonality of the Zhambyl region, a significant reserve for increasing the production of mutton is their grazing on pasture with the use of pasture turnover; which allows the most efficient use of natural forage lands, increase the live weight and fatness of animals.