Livestock Buildings Research Articles

Applicability evaluation of innovative simplified methods of slatted floor in pig houses – A CFD study

The slatted floor system is often used in pig housing. Computational Fluid Dynamics (CFD) is a valuable technique for determining the airflow and gas dispersion within the pit headspace through the slatted floor. However, there is a practical issue related to modeling the thousands of small slot openings in real livestock buildings for CFD simulation. It is unpractical to simulate the slatted floor with geometry details due to the large mesh number and the limited computer capacity. In this study, several methods to simplify the model of the slatted floor were explored to reduce the computational cost. The study was based on CFD analysis supported by experimental validation. The slatted floor was modeled in four ways: direct geometry method (DGM), porous-region method (POM), and profiled-porous-region method (including PPOM-cell (PPOM-C) and PPOM-floor (PPOM-F)). To assess the feasibility of the simplification, the four modeling approaches were compared with the experimental data. The results showed that it’s feasible to model the slatted floor as POM or PPOM. The accuracy of POM was high, but it was greatly affected by the calculation of the resistance coefficient. PPOM-C has greatly reduced the amount of calculation, which could be used to simplify the large-scale pig house model whose flow fields and gas emissions below the slatted floor could be ignored. The simulation result of PPOM-F was the closest to DGM, however, due to the large number of meshes and complex setup, it was not suitable for practical simulation.

Modeling and identification of the hygro-thermal parameters of mechanically-ventilated broiler house using prediction error: Assessment in cold conditions

Indoor air temperature and humidity moisture are of the foremost significance in climate control of broilers houses, and their impacts on poultry health and production depend on accurate control. The main objective of this work is to identify and assess a novel state-space model, to rapidly predict the hygro-thermal behavior of the livestock building. To achieve this analysis, various experimental measurements (e.g., ventilation rate, thermal heating, and air temperature and humidity) of two commercial poultry houses placed in the Mediterranean zone were monitored over cold conditions production cycle. The developed model was estimated and validated against a dataset of 25 days acquired under three different operation ventilation modes (min-ven, power and tunnel modes). Through simulation, the results showed that the predicted model and measured data were achieved a satisfactory accuracy with an averaged coefficients of determination R2 were 0.93 and 0.95, respectively, for the indoor air temperature and humidity models, and a root mean squared error (RMSE) of 0.3213 °C and 0.957 %. Additionally, the predictive model shows satisfying performances for the long horizon prediction with a final prediction error (FPE) equal to 0.084, which will prevent the intensely time-consuming process of getting precise physical parameters in regards the poultry house system.

Chromatographic analysis of the quality of disinsection of poultry premises using low temperature smoke generators Smok Insect

This article discusses a study of the quality of disinsection in poultry farms using low-temperature smoke generators SMOC INSKT generators using thin layer chromatography. The objects of study were washouts from the surfaces of poultry premises of the Sinyavinskaya poultry farm.In a room with a cubic capacity of 8000 m3 , 16 smoke generators were installed based on the volume of the room. Samples were taken from each site and examined using modern equipment from Petrolaser LLC. Based on the results of chromatographic analysis, it was found that thin-layer chromatography is an effective method for controlling the quality of disinfestation, and SMOC INSECT smoke generators allow high-quality treatment of livestock buildings from ectoparasites.As a result of the research, low-temperature generators were recommended as an effective means of disinfestation and decontamination.The use of thin-layer chromography in quality control of disinfestation allows you to obtain results in a short time, while the technique is more accessible and does not require expensive reagents and complex equipment.

Analysis of proposed technical solutions for maintaining the microclimate of livestock buildings

Technical solutions to ensure the necessary values of parameters are studied. Considered scientific research on the subject of control of microclimatic parameters. Identified the main components of the living conditions, ways to maintain their regulated values in the room. The methods of influencing them are considered. Developed a simplified model of the farm in the software package SketchUp 2020, simulations were carried out in the software package SolidWorks 2020. General parameters set for the calculation: heat emitted by the cows — 1000 W; amount of carbon dioxide — 4% in the exhaled air; wind speed at the window inlet — 2 m/s, humidity — 70%, temperature — 25 ºC. The materials used in the study are displayed. Parametric models for the nature and velocity of air flows are presented. The main ways of regulating the indicators of interest are analyzed. The most suitable solutions for modernization and re-equipment of production facilities to improve the microclimate in the cattle housing are identified and described. The functional and structural scheme of technical solutions to ensure the parameters of the microclimate is formed. The technological map of conceptual proposals is made and displayed. On their basis, the main solutions for modernization of farms are defined: natural ventilation, axial and suspended fans, light ridge, nozzles, lifting curtains, artificial lighting.

Esp8266 module use in animal production: a review

The thermal environment in livestock buildings affects the productive and reproductive performance of animals. Therefore, monitoring thermal environment variables is necessary. This study reviewed the applicability of the electronic device ESP8266 module to monitoring animal production. The ESP8266 module is a microcontroller that enables the collection, storage and transmission of data that influence livestock production. The data collected are transferred to cloud computing systems allowing the development of supervisory systems that can be accessed by smartphones, tablets or computers. With this type of microprocessor, it is possible to develop autonomous management systems for animal production. Connected devices using the internet of things, artificial intelligence, machine learning and blockchain will facilitate the analysis of data from the production chain and the appropriate decision-making. Managers of livestock production systems will be in charge of following up and monitoring the processes.

Hemolytic characteristics of Streptococcus isolated from clinical material from synanthropic rodents and birds living in farm animal facilities

Results. In order to study the hemolytic activity of Streptococcus, α-, β- and γ-isolated from samples of clinical material from synanthropic birds and rodents, we studied 324 cultures of Streptococcus. In rats, mice and birds caught in livestock buildings in cultures of Streptococcus, α- and γ-types of hemolysis were mainly manifested, β-hemolysis was observed less frequently.To study the hemolytic properties of Streptococcus, we studied 140 cultures of Streptococcus isolated from the air, washings from walls and floors, as well as from feeders, in livestock buildings of the KabardinoBalkarian Republic. 50 cultures isolated from the air of cowsheds, sheds, stables and pigsties had α-hemolytic activity in 52,0% of cases, complete clarification of blood agar (β-hemolysis) caused 7 cultures and did not cause hemolysis in 17 cultures. 44 cultures of Streptococcus isolated from washings from walls and floors caused α-hemolysis in 40,9% of cases, β-hemolysis in 25,0% of cases and did not cause hemolysis in 34,1% of the studied cultures. 46 cultures isolated from feeder washes caused partial hemolysis in 17 cases, complete hemolysis in 6 cases, and no hemolysis in 23 cases.

The effect of floor material and construction solutions and the type of heating system on greenhouse gas (GHG) emissions – A case study

The paper deals with the issue of greenhouse gas emissions from heating a livestock building using various energy carriers. The purpose of the study was to calculate the emissions of some pollutants (total dust, CO, CO2, NOx, SOx, benzo(a)pyrene) resulting from the heating of the broiler house, using gaseous fuel, coal and fuel oil, in two variants of material and construction solutions of the floor. The scope of work included measurement of selected microclimate parameters, validation and calibration of the model, calculations and analysis of the obtained results. Continuous measurements of selected indoor and outdoor microclimate parameters, such as outdoor and indoor air temperature and relative humidity, floor temperature, wind speed and direction, solar radiation intensity, were conducted in the studied facility. The study used the numerical method of elementary balances to calculate energy demand in selected design variants. A geometric model was created, corresponding to the real dimensions. Based on the measurement data obtained, validation of the computational model was carried out. The obtained results of the numerical analysis were used to calculate selected indicators of greenhouse gas emissions from the studied building. Six calculation variants were assumed, in which different types of heat carriers were taken into account. The obtained results show that NOx emissions when heating the building with hard coal are 74% higher than when using gaseous fuel. Increasing the thermal resistance of the floor to 3.69 m2K·W-1, this reduced the annual energy demand by 56.1% for hard coal and by 15.8% when using fuel oil.

ИССЛЕДОВАНИЕ РАБОТЫ ВИХРЕВОГО ПНЕВМАТИЧЕСКОГО РАСПЫЛИТЕЛЯ ДЕЗИНФИЦИРУЮЩИХ ЖИДКОСТЕЙ

The production of high-quality livestock products is achieved not only by breeding productive livestock breeds, but also by observing zootechnical requirements and ensuring sanitary well-being in livestock buildings. To maintain the proper sanitary condition of livestock buildings, modern technologies, technical means and preparations for disinfecting surfaces are used, and non-compliance with the requirements for the operation of technical means and the consumption rates of disinfectant liquids leads to an increase in the resistance of microorganisms to antimicrobial drugs. The effectiveness of disinfection largely depends on the technical capabilities of disinfection units, and to a greater extent on spray devices. Many researchers solve complex problems of optimizing the design and technological parameters of spray devices, thereby improving their spray quality. In this regard, a vortex pneumatic liquid sprayer has been developed to perform various technologies and disinfection modes. The dispersed composition of aerosols of disinfecting liquids was obtained under various operating modes by the proposed design of the sprayer. Based on the experimental data, graphical dependencies are constructed that affect the degree of dispersion of the working pressures of the disinfectant liquid and compressed air in the channels of their supply. The values of flow rates of a vortex pneumatic atomizer during its operation in various modes are obtained. Graphic dependences of the disinfectant liquid flow rate through the sprayer are plotted at different pressure ratios in the media supply channels (disinfectant liquid and compressed air) and the angles between them. Based on the obtained technical characteristics, the rational design parameters of the new design of the vortex pneumatic atomizer were determined, namely, the angle between the pneumatic and liquid inlet channels α=90o, the diameter of the outlet d=2.0 mm.

Bio‐based building components: A newly sustainable solution for traditional walls made of Arundo donax and gypsum

AbstractTo contribute to the use of bio‐based materials in the building sector, a novel bio‐based wall panel, with a high thermal performance level, is proposed in this work. The panel is based on an ancient rural technique, widely diffused in southern Italy, which makes use of Arundo donax L. canes combined with gypsum plaster to build walls and ceilings of rural buildings. The enhancement of the thermal capacity of these panels by means of the introduction in the canes of a natural wax oleogel (WO) is proposed in this paper. A specific experimental campaign aiming at the comparison of traditional and innovative panels was carried out to assess the enhanced thermal performance of the proposed solution. The maximum value of heat flow absorbed from the panel with WO was 61.08 W/m2 around a mean panel temperature of 24°C, corresponding to the melting temperature range of the WO. The panel without WO at the same temperature absorbed an incoming heat flow of 34.64 W/m2 which is about 57% of the panel with WO. The panel with WO released at a temperature of about 27.5°C, a heat flow of 43.42 W/m2. At the same temperature of about 27.5°C, the panel without WO released a heat flow of 34.38 W/m2 which is about 80% that of the panel with WO. The results highlighted that the addition of natural WO has enhanced the thermal capacity of the panel facilitating heat dissipation through the borders. These characteristics make the panel a suitable component for internal partitions of controlled temperature zones such as residential rooms, storage food areas, livestock buildings, and where it is necessary to obtain a constant environmental temperature. In particular, the null or low toxicity of the panel's materials allows for partition use, also in hygienically safe environments.

Founding of the culture collection of antibiotic-resistant strains of zoonotic bacteria in the Russian Federation.

The main purpose of a national bioresource center is to standardize, centralize, preserve, and ensure accessibility of microbial bioresources that accumulate there because of state research programs. The establishment of national bioresource centers for antibiotic-resistant microorganisms allows to solve practical problems in the field of veterinary service, as well as to develop effective chemotherapeutic and disinfectant drugs to overcome the mechanisms of resistance. This study aimed to outline the process of forming a national culture collection of antibiotic-resistant strains of zoonotic bacteria in the Russian Federation using two microbial strains. The object of research was isolates of Salmonella spp., Escherichia coli, Enterococcus spp., Campylobacter spp., Listeria monocytogenes, and Staphylococcus spp., all of which were obtained from biomaterials of farm animals, feed samples, bedding, water from livestock buildings, washouts from environmental objects, and food products. The resistance of bacterial isolates was determined using microbiological and molecular-genetic research methods. During monitoring studies, 1489 bacterial isolates were isolated. In total, 408 bacterial isolates were tested for sensitivity to antimicrobial agents, including E. coli (47.6%), Salmonella spp. (30.4%), Enterococcus spp. (11.3%), and Campylobacter spp. (10.8%). For genetic characterization, 95 isolates of Salmonella enterica, E. coli, Campylobacter spp., L. monocytogenes, Staphylococcus spp., Enterococcus spp. were chosen from the research collection, which was formed as part of the monitoring program for antibiotic resistance. Deposited isolates that underwent whole-genome analysis can be used as positive control samples both in the development and use of methods or test systems for the detection of various resistance genes in zoonotic bacteria. In addition, such isolates can also be used for microbiological studies related to determining the sensitivity of microorganisms to antibacterial drugs, for phenotypic studies in the diagnosis of various bacterial infections in animals and birds, and retrospective analysis of strains from numerous collections.

The concentration of particulate matter in the barn air and its influence on the content of heavy metals in milk

Heavy metals are one of the components of smog, which is mainly the product of burning fossil fuels in residential buildings. These elements, introduced into the body of cattle by inhalation, may enter the milk. The goal of this study was to assess the impact of particulate pollution in the atmospheric air on the concentration of particulate matter in the air of a dairy cattle barn and on the content of selected heavy metals in milk from cows present in the building. Measurements were taken between November and April (148 measurement days). The calculations carried out showed a high correlation (RS = + 0.95) between the concentrations of particulates measured outside and inside the barn, which is indicative of a significant impact of the atmospheric air on the particulate pollution level of the livestock building. The number of days in excess of the daily standard for PM10 inside was 51. The conducted analysis of the chemical composition of the milk collected under high particulate pollution (February) showed that the permitted lead level had been exceeded—21.93 µg/kg (norm 20.00 µg/kg).

Pilot scale investigation of DBD-Plasma photocatalysis for industrial application in livestock building air: Elimination of chemical pollutants and odors

Photocatalysis and Plasma are widely considered as efficient and eco-friendly methods for the air treatment at domestic and industrial scales. In fact, the respective application of titanium dioxide (TiO2) and Dielectric-Barrier-Discharge(DBD) drew increasing attention in the last decades for their, flexible, non-selective and high efficiencies for the mineralization and the degradation of large selection of molecules. Nevertheless, the application of these techniques in separate conditions might generate undesired by-products that might hinder their treatment efficiencies. In this study, the effect of combining photocatalysis and Dielectric-Barrier-Discharge (DBD)techniques was investigated for the treatment of livestock building air at laboratory and industrial scale.. of Experiments were conducted in separate (i.e., Photocatalysis or plasma) and combined (i.e., Photocatalysis and plasma) systems to assess the degradation efficiency of two molecules, namely (NH3) and Propionaldehyde (ProPA) under various operating conditions. Studies onducted on laboratory scale showed a interesting level of treatment when applying either photocatalysis or plasma, with degradation yields reaching 29 and 36% for NH3 and 37 and 42% for ProPA, respectively. These degradation efficiencies were further enhanced when combining the processes, thus reaching 72 and 83% for NH3and ProPA, respectively. Moreover, investigations conducted on the generation of ozone during photocatalysis / Plasma treatment showed a decrease in the O3 concentration when compared to separate Plasma treatment. The photocatalytic degradation of ozone under UV radiation and in presence of TiO2 led to Low concentrations of ozone were detected at joint processas a consequence ofits catalytic decomposition under UV-light into HO2°, OH°,O2°-radicals at high humid conditions. The synergetic effect during the pollutant degradation was explained by the association of discharge plasma, presence of O3, UV-light and TiO2..Additionally,The implementation of the photocatalytic-plasma discharge reactor was performed to treat livestock sector air effluent loaded with ammonia.The effect of airflow and relative himidity were assessed. Results showed a significant NH3 removal efficiency in real conditions where it varied between59 and 75% for a flowrate of 2 m2/h and a relative humidity of 100%. Additonnlay, chemical and olfactometric studies were conducted to assess the performance of cimined sytem with real efflluent of livestock building air.

6 Comparison of Ammonia Concentrations Between Flush and Pull-Plug Waste Management Systems in Wean-Finish Swine Barns

Abstract Pig manure contains a wide variety of corrosion-inducing chemicals such as ammonia. Ammonia production and its release are influenced by temperature and moisture in the barn environment. Increased concentrations of ammonia can negatively affect pig health and growth, as well as pose a risk to human health. Additionally, even at decreased concentrations, ammonia reacts with humidity and causes premature corrosion of barn equipment and is a threat to the structural integrity of livestock buildings. In this study, ammonia concentrations were monitored and compared between two 880 head wean-finish swine facilities with different types of waste management systems. Both facilities had shallow manure pits, one containing a flush system and one containing a pull plug system to remove manure from the barns into the lagoon. Ammonia, dry-bulb air temperature, and relative humidity levels were measured every0 min for an entire wean-finish cycle (approximately 20 weeks). Data will be compared between the facilities to evaluate the impact of the waste management systems on indoor air quality conditions. Potential implications for pig health and growth and facility maintenance will be explored. Results will provide information on best management strategies for swine facilities.

A scaled-down model of a dairy barn to imitate a livestock building for modelling and control of environmental conditions

Heat stress has vital importance in livestock farming due to the physiological changes on the animals so that meat and milk production is significantly degraded. Recently, the hereditary and mental effects of environmental conditions have also been discussed for future generations. Therefore, high-level automation solutions are required to keep the environmental conditions in the barns as optimal as possible. In this paper, a hangar-type scaled-down barn was experimentally designed for modelling and control of the environmental conditions. First, the temperature-humidity index (THI) which is a measure of the heat stress, was stabilized to its critical value in two regions of the barn by using proportional-integrative-derivative (PID) controller. The ventilation fans were controlled at variable speeds so that energy efficiency was also provided when compared to the on-off control. Second, we proposed the state-space modelling of the coupled temperature and humidity dynamics for the interior space of the barn so that the obtained model can be utilized for mathematical analysis and accurate control. Specifically, state monitoring and prediction, optimal control, and observer-based sensor-less control are to be applied based on its state-space model. The parameters of the state-space model were here estimated with an Extended-Kalman Filter (EKF). Performances are calculated in terms of mean square error (MSE), and the performance values were found to be less than 5% for stabilization and less than 2% for modelling, respectively. The proposed scaled-down barn model is a low-cost design that can be used as an example for those who work in this field to conduct experimental studies before making large investments. Barn design can also be modified for modelling, analysis, and control of new heat stress measures in the future.

Predicting Ventilation Rate in a Naturally Ventilated Dairy Barn in Wind-Forced Conditions Using Machine Learning Techniques

Precise ventilation rate estimation of a naturally ventilated livestock building can benefit the control of the indoor environment. Machine learning has become a useful technique in many research fields and might be applied to ventilation rate prediction. This paper developed a machine-learning model for ventilation rate prediction from batch computational fluid dynamics (CFD) simulation results. By comparing deep neural networks (DNN), support vector regression (SVR), and random forest (RF), the best machine learning algorithm was selected. By comparing the modeling scheme of direct single-output (ventilation rate) and indirect multiple-output (predict averaged air velocities normal to the openings, then calculate the ventilation rate), the performances of the machine learning models widely applied in ventilation rate prediction were evaluated. In addition, this paper further evaluated the impact of adding indoor air velocity measurement in ventilation rate prediction. The results showed that the modeling performance of the DNN algorithm (Mean Absolute Percentage Error (MAPE) = 20.1%) was better than those of the SVR (MAPE = 23.2%) and RF algorithm (MAPE = 21.0%). The scheme of multiple-output performed better (MAPE < 8%) than the single-output scheme (MAPE = 20.1%), where MAPE was the mean absolute percentage error. Additionally, the comparison of modeling schemes with different inputs showed that the predictive accuracy could be improved by adding indoor velocities to the inputs. The MAPE decreased from 7.7% in the scheme without indoor velocity to 4.4% in the scheme with one indoor velocity, and 3.1% in the scheme with two indoor velocities. The location of the additional air velocity affected the accuracy of the predictive model, with the ones at the bottom layer performing better in the prediction than those at the top layer. This study enables a real-time and accurate prediction of the ventilation rate of a barn and provides a recommendation for optimal indoor sensor placement.

Identified factors and predicted unidentified-factors affecting ammonia emissions from a swine building

Large variabilities in ammonia (NH3) released from animal manure and emitted from different livestock buildings were frequently reported, but the factors influencing the emissions were not sufficiently investigated. In this paper, continuously monitored data of NH3 emissions and other relevant environmental variables under controlled conditions in a 12-room experimental swine building for a 155-d complete wean-to-finish cycle were studied. Measurement data mining was conducted at both spatial and temporal dimensions using panel data analysis with heterogeneous time trends. The pig diet, total pig weight, and the pit air temperature were identified as the major influencing factors for the variabilities by using multivariate linear regression. Two unidentified factors that imposed substantial influences on the NH3 emission variabilities were predicted. They were most possibly related to variations in microenvironment and microbial activity inside the manure in the pit. The results suggest necessary future research to identify physical properties of the new NH3 emissions factors in microbiological and biochemical processes.

The choice of the design of livestock buildings

The article calculates pressure losses due to friction and local resistance, which allows you to determine the total losses in the chimney. For normal operation of gas installations, conditions must be created under which a vacuum is created at the exit points of combustion products. The task of removing combustion products includes determining the cross sections of chimneys and connecting pipes.

Innovative technology for ammonia abatement from livestock buildings using advanced oxidation processes

The feasibility of using advanced oxidation processes (AOPs) for abatement of ammonia from livestock buildings was examined in a series of pilot plant experiments. In this study, all the experiments were conducted in a two-step unit containing a dry photolytic reactor (UV185/UV254/O3) and a photochemical scrubber (UV254/H2O2). The unit efficiency was tested for two initial ammonia concentrations (20 and 35 ppmv) and three different air flows (150, 300 and 450 m3·h−1). While the first step removes mainly organic pollutants that are often present together with ammonia in the air and ammonia only partially, the second step removes around 90% of ammonia emissions even at the highest flow rate of 450 m3·h−1. Absorbed ammonia in the aqueous phase can be effectively removed without adjusting the pH (i.e. without the addition of other additives) using UV and ozone. Complete removal of ammonia was achieved after 15 h of irradiation. In order to assess the price efficiency of the suggested technology and to be able to compare it with other methods the figures-of-merit were determined. The price needed for lowering ammonia emission by one order of magnitude is 0.002 € per cubic meter of treated air at the highest flow rate of 450 m3·h−1 and for initial ammonia concentrations of 20 ppmv. These findings demonstrate that AOPs are a promising method for ammonia abatement from livestock buildings which are rarely using any waste air treatment method.

Knowledge of resilience strategies in livestock management during dry periods in southwestern Nigeria

Recurring elongated dry seasons in South west Nigeria pose a significant threat to livestock production. Knowledge of adaptation strategies to build resilience and lowers vulnerabilities to climate change among livestock farmers is limited. This study assessed livestock farmers’ knowledge of resilience strategies in farm management during dry seasons in southwest Nigeria. Using a purposive sampling procedure, a total of 118 farmers were interviewed on knowledge of livestock management during dry periods, specific challenges to management, and opinions on efficient livestock management. The result shows that increased feed costs challenged farmers during the dry season while insufficient funds were identified as the most severe constraint. Knowledge of management was high among 42% of farmers and 89.5% of them disagreed on the mechanism for temperature control structure in livestock building. Knowledge of good management practices was influenced by farmers’ ability to read and write in Yoruba language (χ2= 9.179; p < 0.05) and constraints faced (r = 0.21; p < 0.05). Climate change information in local languages will improve livestock farmers’ resilience to challenges induced by unpredictable climate change.

УСОВЕРШЕНСТВОВАНИЕ СИСТЕМЫ ВОДОИСПАРИТЕЛЬНОГО ОХЛАЖДЕНИЯ КОРОВНИКОВ

The research was carried out in order to solve the problem of elevated air temperatures in livestock buildings during the hot season. The maximum intensity of moisture evaporation from the surface of the sample, blown by air flows of different speeds and directions, is achieved with the alternating action of the flow from opposite directions. As a means of creating a comfortable microclimate that can provide a change in the direction of air flows in barns, it is most advisable to consider the joint use of accelerating axial fans installed along the entire room and fine spraying of water, which gives a significant (up to 11°C) cooling effect. The developed devices for inducing air exchange and air conditioning for livestock farms have design features that allow you to change the direction of the air flow injected by the fans by 180 °, which provides a non-stationary ventilation mode that prevents the formation of stagnant zones in the air volume of the room, increases the assimilation capacity of the air and improves its quality indicators. The direction of the air flow is set using a reversible electromagnetic starter, or a system of cables and counterweights. At the same time, the cooling of the air flow using fine water spray is carried out taking into account the direction of its movement and is regulated by the control unit. Changing the direction of the air flow to the opposite also provides an increase in the surface area of the bodies of animals in contact with the flow, and, as a consequence, an increase in the cooling effect. The use of the proposed developments will make the microclimate in the summer more comfortable for animals, which will positively affect their productivity.