Abstract: To assess the influence of the nutrition factor on public health, the Direction of Rospotrebnadzor in the Irkutsk Region analyzed the average per capita consumption of food products by the population. This article provides statistics on the development of the infrastructure of the consumer market of the Irkutsk region and the consumption of vegetables and gourds. The authors conducted a comprehensive study of changes in social needs for canned vegetables, including the socio-psychological factors of demand formation in the retail distribution network of the city of Irkutsk. The article assesses the existing legislative framework in the country, which is designed to ensure food security of the population. In the Irkutsk region, electronic veterinary certification through the Federal State Information System “Mercury” is in place, which facilitates small businesses accessing products to the retail network and allows for traceability of products supervised by the state veterinary supervision during their production, circulation and movement across the territory of the Russian Federation. A study of the chemical composition of canned sugar corn showed that the mass fraction of the constituent parts, chlorides, and net weight of all samples is within the normal range; the content of plant impurities was not found in any sample. In terms of microbiological safety indicators, the tested samples comply with the requirements of the technical regulations of the Customs Union TR CU 023/2011. An analysis of the fruit and vegetable market showed that Russia remains a major importer of vegetables and fruits. Many types of fruits and vegetables are perishable products, long-term storage of which is possible only using various canning methods. During canning, the initial properties of fresh raw materials change, as a result of which the products of the processing of fruits and vegetables acquire new properties. Among all canned vegetables, the most popular among consumers are sugar corn (76%) and green peas (66%), and the leaders of consumer preferences are “Bonduelle” and “GreenRay”

Keywords: fruits and vegetables, canned vegetables, chemical composition, quality and safety indicators, consumer surveys, assortment, sweet corn

Abstract: Obtaining and growing healthy lambs is an important task of sheep breeding and largely depends on the milk content and usefulness of ewe’s milk, since milk in the first month of life is the only physiological food product for lambs and, accordingly, a supplier of micronutrients. Therefore, a deficiency in the diet of micronutrients, in particular iodine, can directly affect not only the viability of lambs, but also productivity in subsequent periods of life. The article presents the results of a study of the biochemical parameters of lambs of the West Siberian meat breed during the suction of ewes receiving the iodine-polymer preparation “Monclavit-1”. The object of the study was the lambs (n = 10) of the West Siberian meat breed, which were sucked by ewes of the 1st and 2nd experimental groups, the diet of which included the Monclavit-1 preparation, at a dose of 0.5 and 1 ml per kg live weight, respectively. It was established that the use of the drug by lactating ewes increased the amount of total protein and albumin by 7.4 and 11.7; 9.9 and 13.4; 5.4 and 9.6%, an increase in the concentration of triglycerides - by 12.7 and 23.8% (P <0.05), the content of calcium and phosphorus - by 5.6; 5.8 and 7.1; 8.3%, respectively, in lambs of the 1st and 2nd experimental groups, in comparison with control animals in the first month of life. The most significant was the difference in protein metabolism in lambs of the 2nd experimental group, which indicates an increase in metabolic processes of anabolic nature in the body of lambs

Keywords: iodine, blood, protein, carbohydrate, lipid metabolism, West Siberian meat breed, lambs

Abstract: According to epizootological journals, cases of rabies in the Republic of Buryatia were not recorded after 1981. In the period 2011-2018 rabies was recorded in fifteen rural areas, in which the number of diseased wildlife was 47.6%. The complication of the epizootic situation of rabies in the Republic of Buryatia is associated with the expansion of natural foci of infection in the Trans-Baikal Territory and in the transboundary territory of Russia and Mongolia. According to veterinarians and livestock owners, the reason for the infection of farm and domestic animals (a dog) and the transmission of the virus during outbreaks was a fox (Vulpes vulpes L., 1758), which plays a major role in the development of the epizootic process. The most important tool in eliminating rabies among wild animal populations is the vaccination of foxes, which are considered reservoirs of the causative agent of this disease, which are its significant carriers. A fox is vaccinated by eating a rabies vaccine packaged in a capsule hidden inside a delicious bait. The vaccine contained in the bait stimulates the production of antibodies in the lymphoid tissue of the oral cavity and throat, which leads to the formation of intense immunity. A model of the layout of the vaccine for oral immunization of wild carnivores according to the “spiral” principle has been developed, data on the volume of the vaccine have been calculated depending on the length and radius of routes, which determines the most comprehensive coverage of wild carnivores. Further elimination of rabies in the Republic of Buryatia requires further oral vaccination of animals until 55-70% of the population of wild carnivores is immunized

Keywords: Republic of Buryatia, rabies, animals, wild carnivores, natural hearth, oral vaccination, epizootic process.

Abstract: The article is devoted to a special case of the autopsy and description of the heart of a female water deer (Hydropotes inermis argyropus), a species atypical for the fauna of the Russian Far East, in general, and the Primorsky Territory, in particular. The material for the study was the heart of a female deer of the subspecies Hydropotes inermis argyropus at the age of 2 years. The corpse of the animal was comprehensively studied by expert pathologists of the Federal State Budgetary Educational Institution of Higher Education Primorsk State Agricultural Academy to obtain objective data on the anatomy of a new species for Russia. The aim of the study was to study the specified species of artiodactyls with the prospect of further use in forensic veterinary practice, the identification of parts of the body. Fragmentation of corpses is an ongoing practice used by poachers and other entities involved in the illegal harvesting of biological resources. This, in the future, complicates the activities of the investigation and other competent authorities. The preparation of the organ was carried out according to generally accepted methods, with photographing and taking morphometric data from all the main structures of the heart, which is described as spherical in the studied individual, has a strong left ventricle and a relatively weak right ventricle, highly located relative to the apex. The scallop muscles of the atria are dense, localized in a heaped, welldefined, swollen shape. The trabecular apparatus is poorly structured, its pattern is smoothed. Septomarginal trabeculae of both ventricles of the tendon type, paired only in the left ventricle, in the right one. The papillary muscles of the right atrioventricular valve are well defined, large. Both papillary muscles of the left ventricle are well developed, located on the wall. The valve flaps do not have a distinct boundary between them.

Keywords: heart, water deer, rare species, morphometry, parameters

Abstract: Selenium attracts the attention of breeders as a biotic element that performs important biochemical functions in small quantities, as well as a highly toxic element, inorganic compounds of which are more toxic than molybdenum, arsenic, and vanadium compounds. In recent years, a new approach to the production of therapeutic drugs has been developing, based on the immobilization of therapeutic agents on polymer carriers. This allows us to improve their pharmacological properties - to reduce teratogenic effects, as well as storage stability, that is, to ensure the safety and effectiveness of the action. The paper describes an experimental study on rats of the action of the nanocomposite drug carrageenan + nano-Se on the animal organism. In experimental rat groups, toxic damage to the liver was modeled by subcutaneous injection of a 50% oil (olive oil) solution of carbon tetrachloride (CCL4) for four days at a dose of 2 ml / kg. The introduction of the studied substances was carried out 1 hour before the use of hepatotoxin. Control animals received a toxicant and a hepatoprotective equivalent volume of water. As a result of the study, it was found that a nano Se-containing nanocomposite based on carrageenan has a protective effect on the damaged liver, as evidenced by the normalization of enzymes (ALT, AST) in the study of blood serum, has a pronounced positive effect, due not only to the content of selenium, but also properties of the carrageenan matrix itself. A nanocomposite carrageenan + nano-Se dose of 2 mg / 100 g of animal mass does not have a toxic effect on the body. Thus, the carrageenan matrix of the selenium molecule has lower toxicity compared to elemental selenium (sodium selenite).

Keywords: selenium, liver, carrageenan matrix, nanopreparation, sodium selenite, ALT, AST, rats.

Abstract: The present work is devoted to the problem of morphological and functional thyroid restructuring as an adaptive response that provides protection of the body from the effects of harmful environmental factors. The paper presents the results of a comparative study of the ability to adapt in mammals of animals living in natural conditions and urban environment. The object of study was the muskrat (Ondatra zibeticа), caught in various areas of the city of Irkutsk and in the area of the Selenga river delta. As a result of our studies and analysis of the morphological and functional parameters of the muskrat thyroid gland depending on the habitat (under the conditions of anthropogenic impact and in natural conditions), an increase in the average diameter and volume of follicles, the height and area of thyroid cells in the studied animals living in the New Lenin and Konniy Islands by 10.8%, compared with individuals living in the conditions of the microdistrict Solnechny, and 15.4%, compared with the area of the Selenga river delta. The Brown index in the experimental groups of Novo-Lenino and Konny Island is lower by 10.2%, compared to those in the Solnechny microdistrict and by 15.0%, follicles, the height and area of thyroid cells in the thyroid gland is due to the presence of a large number of large follicles against the background of the general microfollicular structure of the parenchyma, which indicates the hyperfunction of the thyroid gland in the muskrat, which exists in the areas of Novo-Lenino and Konny Island, as a result of increased secretory activity of the thyroid parenchyma and possibly contributes to the formation of long-term adaptation in the extreme conditions of the urban environment. On the contrary, the bulk of the thyroid gland follicles in the muskrat living in the microdistrict Solnechny and the Selenga River delta are medium and small in size, which indicates the normal functional state of the organ.

Keywords: muskrat, test object, bio-indicator, thyroid gland, thyrocytes, Irkutsk, NovoLenino, Konny Island, Solnechny microdistrict, Selenga River Delta.

Abstract: The article presents the results of an ultrasonographic study of the thyroid gland of mink keeping in cage with pathology of the hairline “section”. According to scientists, young minks with a clinical manifestation of a “section” of the hairline show a hypofunction of the thyroid gland of approximately 40-80%. Most of the pathologies relate to violations of the processes of fur formation, which also depend on the activity of the thyroid gland. Widespread among the pathologies of fur formation today has a “section” of the hairline. The studies found that clinically the “section” of the mink was accompanied by a progressive breaking and the disappearance of the outer and guide hair, leading to exposure of the down hair. Visually affected areas of the skin looked like unevenly trimmed hair with scissors. The first lesions were observed at places where frequent contact with the components of the cage occurred - the back of the neck, ridge, sides, tail. Earlier, during hormonal studies, we found that in minks at the “cross-section” there was a decrease in the level of thyroxin by 47% compared with clinically healthy animals, the level of thyroid-stimulating hormone remained within acceptable values. An ultrasonographic examination of the mink’s thyroid gland with a “section” of the hairline revealed the following: organ localization is not changed, visualization is good, the left lobe of the thyroid gland is triangular in longitudinal projection. Parenchyma homogeneous with hyperechoic small inclusions, smooth contours even. The right lobe of the thyroid gland is triangular, more ovoid in shape. The structure is homogeneous hypoechoic in comparison with the surrounding tissues, the capsule is uneven tuberous. In minks, the parathyroid gland is clearly limited; the parenchyma is homogeneous anechoic without extraneous inclusions.

Keywords: mink, hairline, thyroid gland, ultrasonogram, “section”.

Abstract: The study of toxocariasis is important and essential in terms of public health. This disease is directly related to dogs, especially puppies. The authors of this communication conducted research on the territory of the Irkutsk region during 2008-2018. The average incidence rate was established, which amounted to 0.39 ± 0.07 per 100 thousand people. However, the highest rates were recorded in 2018 - 0.78 per 100 thousand. In addition, there were three rises: 2011, 2014, 2016. In other words, these are two periods, the duration of which is from 2 to 3 years. Most often, children under 14 years of age are ill (0.54 ± 0.15 per 100 thousand). The maximum average annual incidence rate of the population living in rural areas was 0.57 ± 0.09 per 100 thousand people and it exceeds the average regional level by 1.5 times. The incidence of the population during the study period increased almost 4 times (from 0.2 ± 0.03 to 0.78 ± 0.06 per 100 thousand people), with an average annual growth rate of 14.5%. The villagers are most susceptible to the disease. For 2008-2018 in the Irkutsk region 103 cases of toxocariasis were recorded. Of these, adults accounted for 68.0%, children under 17 years old - 32.0%. When analyzing sick children by age, it was revealed that toxocariasis was found among all age groups, except for children under the age of 1 year. The most infested are in children 7-14 years old (44.0%), and 3-6 years old (38.0%). 12% of patients were detected among children at 1-2 years old and at the age of 15-17 years old - 6.0%

Keywords: Irkutsk region, toxocariasis, long-term dynamics, dogs, cats

Abstract: Knowledge of the zonal features of the epizootology of parasitic diseases and the life cycle of their pathogens is an essential condition for effective treatment and prophylactic antiparasitic measures. The article presents the epizootology of parasitic diseases of small cattle, pigs and horses in the territory of the Irkutsk region. The initial data for the studies were the reporting forms of the Veterinary Service of the Irkutsk Region and the Irkutsk Interregional Veterinary Laboratory from 2006 to 2018. As a result of the studies, it was found that out of the total number of 56018 investigated samples, 29214 samples turned out to be positive, the percentage of detection of invasion was 52.2. From 2006 to 2018, parasitic diseases from the class of nematodoses — nematodirosis, strongylitis, trichocephalosis — were recorded in the Irkutsk region in small cattle; trematodoses - fascioliasis; cestodoses - moniesiosis and protozoa - eimeriosis. In pigs, nematodoses were represented by ascariasis, trichocephalosis and esophagostomiasis, protozoa - eimeriosis; in horses - helminthiases of the class of nematodoses: oxyurosis, paraaskaridosis, sanguyloidosis and strongylitis. The percentage of detectable invasion in small cattle from 2006 to 2018 in the Irkutsk region amounted to: with strongylitis -31.4, eimeriosis - 20.3, nematodirosis - 11.5, moniesiosis - 3.5, trichocephalosis - 2.2; fascioliasis - 1.1. In pigs, these indicators were as follows: with ascariasis - 21.6%, eimeriosis -8.0%, esophagostomiasis - 4.5%, trichocephalosis - 3.1%. In horses, the following values were obtained: with strongilatosis - 41.2%, paraaskaridosis - 18.9%, strongyloidosis - 1.6%, oxyurosis - 0.44%. The rate of invasion in small cattle and pigs in the districts of the Irkutsk region from 2006 to 2018 was high and varied from 2 to 3% in four districts of the Irkutsk region: Bodaibo - 2.98%, Cheremkhovsky - 2.71%, Kuytun - 2.47 % and Taishet - 2.23 percent.

Keywords: Keywords: small cattle, pigs, horses, invasive diseases, laboratory diagnostics, the percentage of detectability of invasion, the extent of invasion.

Abstract: In the present studies, the effects of estrogen E2 on the expression of EP2 receptor mRNA and the effects of estrogen E2 on the expression of EP2 receptor protein in bovine epithelial cells were studied. To detect the effect of estrogen E2 on the expression of EP2 receptor genes in epithelial cells of bovine oviducts, the Incell Western method was used. Real-time PCR was used to control the effect of estrogen E2 on the expression of the EP2 receptor gene in epithelial cells of bovine oviducts. The research results showed that when estrogen acts on epithelial cells of bovine oviducts at a concentration of 10-10 mol / L (without adding indomethacin) for 2 hours and at points 4 and 48 hours, high expression of EP2 mRNA is observed. A significant increase in the expression of EP2 prostaglandin receptor mRNA was observed when estrogen with indomethacin acts on epithelial cells of the oviducts, which suggests that it acts on endogenous prostaglandins, and estrogen E2 is able to affect the expression of EP2 receptor mRNA epithelial cells of bovine oviducts, stimulating a high level of bovine oviduct epithelial cells EP2 receptor. Under the action of estrogen at a concentration of 10-10 mol / L at the point of 2 and 4 hours, with the addition of indomethacin, the expression level of EP2 receptor mRNA exceeded the expression level of the group without indomethacin; under the action of estrogen E2 at a concentration of 10-10 mol / L, for 8 hours, the expression of the EP2 receptor protein was significantly higher at this point than at 0 hours.

Keywords: prostaglandins, epithelial cells, oviducts, cows, estrogen, receptors

Abstract: The article presents the results of the influence of genetic factors on the milk productivity of cows. To obtain the results, the data of cows for the last 5 years (2014–2018) were processed in the SEC “Okinsky”, which contains 4042 cattle, including 2502 heads of cows. According to valuation data, the annual milk yield per cow in 2018 amounted to 5298 kg. The herd consists of Holstein black-mothly cattle. The material used for research was breeding cards of cows (f-2 mol), cards of breeding bulls (f-1 mol), herd rating data, which were combined into a single database of the SELEX program. During the research, the influence of the breeding value of bulls of producers and the productivity of their mothers on milk production of their offspring. Based on the available data, bulls of the A1 and A1B1 categories in the first and third lactations exceeded the daughters of bulls with other categories. The highest percentage of fat in the first lactation was received from daughters of bulls with categories A1B1 and A2B1 (3.83% and 3.80%). It was revealed that the productivity of the mother of the father also had a significant impact on the productivity of daughters. So the productivity of bull mothers up to 8000 kg of milk had a negative effect on the milk yield of cows. The best milk productivity was shown by the daughters of bulls with mothers productivity from 10000 kg (5410 kg-5506 kg), which is explained by the fact that these animals were obtained from bulls with high breeding value, and their genetic pressure is quite strong.

Keywords: black-motley cattle, bulls, milk production, genetic factors

Abstract: The meat of Peking and muscat ducks is one of the dietary foods and is gaining popularity among the population, it almost does not cause allergies and is also recommended for use by people suffering from anemia and diabetes. Particular attention is paid to duck meat because of its high content of proteins, fatty acids, phosphorus and potassium, and it also serves as an excellent antioxidant. Elements contained in duck meat can improve the work of almost all body systems. In addition, 66.4% of meat is used for musk duck, and 51.6% for Peking. Consumers, preferring healthy and safe food, acquire poultry meat. In industrial poultry, all products undergo strict veterinary and sanitary control. Examination of household products obtained from personal households is not always carried out. The aim of the research was to determine the quality and safety of meat of Peking and muscat ducks obtained from the personal economy of the Irkutsk region. The objects of the study were the carcasses of Peking duck and muscat duck. Slaughter was carried out in autumn. In the studies used standard methods according to the regulatory and technical documentation. The obtained results of organoleptic, bacterioscopic, microbiological studies correspond to the characteristics of benign fresh poultry meat of the first category. The number of bacteria from the surface layer of meat and the total microbial number are within acceptable values. No bacteria of the Salmonella genus, Listeria, and coliforms have been identified; therefore, the meat of Peking ducks and Indowoke is safe and meets the requirements of the Technical Regulation of the Customs Union “On Food Safety”. It can be allowed for free sale if stored in glaciers for 5 months at a temperature of –13 ... –24 C.

Keywords: domestic duck, muscat duck, veterinary sanitary examination, product safety.

Abstract: The article describes the anatomical features of the semilunar valves of the heart of the Baikal seal. The material for the study was the heart from females of the Baikal seal of two age groups, 1 month old (number of hearts n = 3) and 4-5 months (number of hearts n = 3). In their work, publicly available techniques were used: preparation, photographing, morphometry of the corresponding structures of the aortic orifice and pulmonary trunk (width, length and thickness of the cusps, the distance between the cusp commissures, the height of the sinuses and the ventricular part of the cusp pockets). Studies have shown that topographically the aortic valve has a central position and is located between the atrioventricular valves, and the cranial valve of the pulmonary trunk. The projection valve of the aorta is located above the level of the atrioventricular valves, but below the level of the valve of the pulmonary trunk. The aortic valve is morphologically subdivided into the right and left valves, located at the mouth of the aorta -the cranial valve and the septal valve - caudally. It has a pronounced bottom ventricular part of the pocket, which partially reduces the load on the valve flaps. The valve of the pulmonary trunk is formed by the right, left and intermediate lunate cusps. Good development of the right excretory cone, which externally stands out above the coronary groove of the left ventricle, was noted. The morphometric indices of the structures of the aortic estuary in females from 1 to 4-5 months increase unevenly, while an intensive increase in size was noted in the bottom ventricular part of the cusp pocket and the height of the sinus of the mouth, the lowest value at the height of the lunate cusps. The structures of the mouth of the pulmonary trunk also increase with age, most intensively in the bottom ventricular part of the pockets - 1.5 times, the height and hollows of the lunate cusps - 1.3 times, the smallest value is noted for the length of thecrescent cusps and the distance between the cusp commissures - 1.1 times.

Keywords: : heart, Baikal seal, aortic valve, pulmonary trunk valve, right valve leaf, left valve leaf, septal and intermediate pulmonary valve cusps.

Abstract: Most researchers who deal with the problem of bone tissue tumors in dogs note that the majority (up to 90% of all spontaneous tumors) are osteosarcoma. Clinical studies were conducted at the OGBU “Irkutsk City Station for the Control of Animal Diseases”. The material was dogs of various breeds, sex and age groups, who were admitted to the Irkutsk city station for the fight against animal diseases in the period from 2015 to 2018 about the pathology of skeleton bones. Spontaneous bone tumors were diagnosed comprehensively using physical examination and X-ray examination. The final diagnosis was made according to the results of morphological studies of material obtained from neoplasms. When collecting an anamnesis, both an anamnesis of life and an anamnesis of a disease are determined with particular attention to the duration of the manifestation of the disease before seeking help, the order of symptoms (lameness, then a tumor or vice versa), the presence in the family tree of relatives with bone tumors, the history of trauma or any bone disease. It was established that in Irkutsk, bone tissue tumors in dogs account for 9.20% of the total number of diagnosed tumors. The risk factors for the development of the disease in dogs are considered breed, sex, age of the animals, as well as anamnestic data, taking into account the presence of injuries, fractures and their treatment. The results of the analysis suggest that the disease is most susceptible to females of large dog breeds (weighing more than 40 kg) aged 8 years and older. A predisposing factor is the presence of a history of fractures with their internal fixation. Our data suggest that in the city of Irkutsk the greatest risk of developing osteosarcoma is the presence of a history of a bone fracture with its internal fixation, followed by the breed of the animal and the presence of fractures with their external fixation.

Keywords: dogs, osteosarcoma, tumors, small pets, risk factors, clinical studies.

Abstract: The problem of overweight and obesity in domestic cats is increasingly common in veterinary practice. This is largely due to a violation of the diet and a sedentary lifestyle of pets, which contributes to low energy consumption. Being an independent problem, obesity is complicated by a number of diseases: orthopedic, cardio-pulmonary, impaired glucose tolerance, diabetes mellitus, pancreatitis and fatty liver, impaired function of the urinary and reproductive system, skin diseases. The article presents the results of the prevalence of overweight and obesity in domestic cats and analysis of factors affecting the development of this pathology in the city of Ulan-Ude. We found that overweight is recorded in 25.0%, and obesity - in 43.75% of cats admitted. The largest number of cats with overweight and obesity was noted in the age group over 6 years old, in the group of animals aged 1 - 2 years this problem is not observed. Obesity is more common (68.80% versus 31.20%) in females. Animals that receive only dry food are more prone to obesity. It has been established that the development of obesity in cats is affected by unilateral feeding with dry food, the absence of other animals in the house, sterilization, and the absence of an active exercise program. Studies have shown that in the city of Ulan-Ude, obesity in cats is a fairly widespread pathology, to which animals of older age groups are more prone. The main predisposing factors are feeding (dry food only) and gender (females are more susceptible)

Keywords: obesity, overweight, cats, causes.

Abstract: To study the histological structure of the body section of omul kidneys, free from invasion, and fish with varying degrees of infection with plerocercoids, is the goal of these studies, which were carried out during spawning migration in the channel that flows into the Selenga river, according to the quota of the Baikal branch of the FSBI VNIRO (as part of the resource research plan for 2019). Caught individuals of the omuli were divided into 3 groups: 1 group of fish — uninfected individuals; 2 group of fish - individuals with a weak degree of invasion from 2 to 3 capsules; 3 group of omuli - with a high degree of infection from 18 and above plerocercoids D. dendriticum in fish. The results of morphometric studies of the structure of kidneys of non-infected omul showed some microstructural changes in the organ, which, apparently, are associated with the influence of negative environmental factors of fish. Certain pathomorphological changes in the kidney structure of fish with a weak degree of invasion, in particular, decreased blood circulation in the vascular glomerulus, were noted. In the stroma of the kidneys of this group of fish, a few foci of inflammation were observed both in the organ parenchyma and around large vessels, there was stromal edema, destruction of the renal corpuscles and convoluted tubules. The most pronounced changes were recorded in the kidney of omuli with a strong degree of invasion of fish by cestodes: the surface is hilly, the color is light, uneven, the edges are rounded. Microscopy revealed signs of acute congestive hyperemia in the kidney parenchyma: the central veins of the lobules and capillaries are filled with blood, dilated. The results show that pathological changes in the histostructure of fish kidneys, the severity of which was dependent on the level of infection with helminths, undoubtedly have an inhibitory effect on organ functions

Keywords: dendriticum, plerocercoid, kidney, proximal and distal convoluted tubule, collecting ducts, renal glomeruli, omul.

Abstract: The article contains materials of scientific and economic experience on the use of shrimp feed concentrate and the flour from the shells of the nuts of Korean pine cones in feeding laying hens. The authors attempted to explore the possibility of including shrimp feed concentrate and a herbal supplement made from the shells of Korean pine cones in laying hens rations. Two scientific and economic experiments were carried out to include these additives in the diet of laying hens. In the process of work, 4 groups of laying hens (control and 3 experimental) were formed, 50 goals in each analogue method for the study of each additive. Scientific and economic experiments on the inclusion of unconventional additives lasted 120 days (17 weeks). The experiments were conducted on the chickens of the cross “Highsex White white”. The optimal feeding doses of these additives in the rations of laying hens were determined. We studied egg laying of hens when including additives from waste from shrimp production and waste processing of cones of Korean pine, compare the commercial quality of eggs obtained from experimental laying hens. It has been experimentally proven that these feed additives have a positive effect on the egg productivity of laying hens of the cross “Highsex White white”. So, with the inclusion of shrimp feed concentrate in the diet of laying hens, the following results were obtained: gross egg production increased by 11.5-15%. The inclusion of plant-based additives in the diet of hens increased the egg production of laying hens of the experimental groups by 12.2-17%. Gross egg production in the experimental groups was higher than in the control group. The largest gross egg collection was observed in the III experimental group and amounted to 3229 pcs. for the entire period, which exceeds the control by 15%.

Keywords: : feeding, laying hens, poultry, shrimp feed concentrate, shell supplement, nuts, Korean pine cones, egg laying