Livestock Facilities Research Articles

Substantiation of the optimal rate of straw bed in sections with different technological solution

There is no consensus among producers and agricultural practitioners as to which bedding material is the best. The choice is largely influenced by its useful properties, duration of use and high cost. Organic (straw, sawdust, wood shavings, peat, etc.), inorganic (sand) and synthetic (rubber mats; mattresses made of chopped rubber, latex, polyurethane foam lining, waterproof wax coating, etc.) materials are used for bedding. A significant part of agricultural organizations in Belarus uses winter straw. As a bedding material, it has a number of useful properties: low thermal conductivity, high moisture absorption capacity, low cost, and comfort for animals. According to the Republican standards for the technological design of new, reconstruction and technological re-equipment of livestock facilities (RNTD-1-2004), the standards for consumption of straw bedding for cows at loose housing on deep litter is 8 kg, but there are no input standards for sections with other technological solutions. The paper presents the results of studies to determine the optimal rate of straw bedding in sections with different technological solutions. Analysis of ethological reactions of animals, contamination of the skin, presence/absence of injuries on the body, temperature characteristics of the straw bedding in different seasons of the year and the economic efficiency of using different straw bedding rates has been performed. It has been determined that the optimal straw bedding rate for the general section is 4.5 kg/animal per day, for a section with a division into a feeding area and a rest area – 3.0 kg/animal per day. Application of these rates of straw bedding will enable it to be used economically without affecting the productivity and resting comfort of cows. The research results can be used in design and construction of industrial dairy complexes and storages for rough feeds.

Calibration of building energy simulation model for a mechanically ventilated livestock facility

To enhance the productivity of livestock facilities, maintaining a comfortable indoor environment is necessary, as livestock are sensitive to indoor temperature and livestock excrement generates numerous pollutants. In most livestock facilities, the ventilation system represents a large proportion of the indoor environment. Therefore, an energy-efficient ventilation control system, which considers the performance of the ventilation fan and outdoor air conditions, is increasingly in demand. In this study, we developed a building energy simulation model for ventilation control system in a livestock facility. In addition, a polynomial equation for the part-load-factor according to the part-load-ratio was developed to calibrate the fan energy consumption. The indoor temperature prediction performance was calibrated by optimising the infiltration rate and equipment load variables. The proposed building energy simulation model is expected to contribute to energy reduction and productivity improvement of the livestock by determining the optimum fan operation schedule through simulation analysis of various factors. • A whole-building energy model for livestock facility was developed. • PLF model was applied in the energy model and showed high prediction performance. • High prediction performance for air temperature was secured by input optimization. • Daily model update better represents trend of indoor air temperature than weekly update.

Analysis of Odor Substances and Particle Composition for Characterization of Fine Dust Near Livestock Farms

The present study aimed to evaluate the concentration of odor substances and fine dust in areas where livestock farms are densely located, and to perform a correlation analysis of these concentrations to characterize the composition of fine dust. The mass concentration of fine dust in the areas tested was 33.6~46.68 μ/m3 for particulate matter with a diameter ≤ 10 μm (PM10) and 16.85~32.82 μ/m3 for particulate matter with a diameter ≤ 2.5 μm (PM2.5). These concentrations were higher than those in most of the neighboring areas. Ammonia concentration was measured in the range of 2.82~11.42 μ/m3. The concentrations of the volatile organic compounds (VOCs), methyl ethyl ketone and toluene, were 0.24~11.82 μ/m3, and 3.08~30.61 μ/m3, respectively. Composition analysis showed that fine dust was composed of 8.2~10.2% carbon, 0.3~1.7% sulfur, and 0.1~0.9% nitrogen. Anions were detected at a higher concentration than cations, and SO42- was measured at the highest concentration. Of the four most prevalent metals detected (i.e., Al, B, Cu, and Zn), Al showed the highest concentration in both PM10 and PM2.5, and accounted for the majority of the total metal component (84.7% and 82.2%, respectively). A correlation analysis of find dust with ammonia and VOC (methyl ethyl ketone and toluene) concentrations showed that ammonia generated from livestock facilities affected the formation of fine dust in nearby areas. VOCs emitted from nearby industrial facilities were also considered to contribute to the constituents of fine dust.

Ontology-Based IoT Middleware Approach for Smart Livestock Farming toward Agriculture 4.0: A Case Study for Controlling Thermal Environment in a Pig Facility

Integrated farm management (IFM) is promoted as a whole farm approach toward Agriculture 4.0, incorporating smart farming technologies for attempting to limit livestock production’s negative impacts on the environment while increasing productivity with regard to the economic viability of rural communities. The Internet of Things (IoT) may serve as an enabler to ensure key properties—such as interconnectivity, scalability, agility, and interoperability—in IFM systems so that they could provide object-based services while adapting to dynamic changes. This paper focuses on the problem of facilitating the management, processing, and sharing of the vast and heterogeneous data points generated in livestock facilities by introducing distributed IoT middleware as the core of a responsive and adaptive service-oriented IFM system, specifically targeted to enable smart livestock farming in view of its unique requirements. The proposed IoT middleware encompasses the context-awareness approach via the integration of a flexible ontology-based structure for modeling and reasoning. The IoT middleware was assessed in actual conditions on the grounds of a case study for smart control of the thermal environment in a medium-sized pig farming facility. As derived from the obtained evaluation results, the system appears to perform quite satisfactorily in terms of computational performance as well as ontology coherence, consistency, and efficiency.

Incentivising ammonia emission abatement through in-house slurry acidification: Evidence from a discrete choice experiment in Germany

This article assesses farmers' willingness to participate in a stylised scheme supporting the adoption of slurry acidification techniques in livestock facilities. Slurry acidification is a novel technique, developed in Denmark, to reduce ammonia emissions. In a discrete choice survey of 129 German livestock farmers, the respondents were asked to choose among different support schemes and the status quo. The attributes presented in the choice sets were the expected emission reduction, the cost share on offer, a factor by which the additional nitrogen in acidified slurry must be accounted for in fertiliser plans, and concessions on current fertiliser regulations. A mixed logit model showed that the majority of respondents valued emission reductions, a higher cost share and concessions on the statutory requirements of the Fertiliser Ordinance. A latent-class model was applied to reveal preference heterogeneity. It identified three preference classes with different perceptions of the scheme's attributes.

Distribution of Airflow and Media Moisture Content across Two Vertical Bed Biofilters

For its small square footage, a vertical bed biofilter was developed for odor emission mitigation for livestock facilities with limited area available for biofilter installation. However, a concern about the design is that airflow and moisture may be poorly distributed across the biofilter due to the effects of gravity. Relevant data are sporadic in the literature. To fill the knowledge gap, two vertical bed biofilters were constructed at a university swine facility and monitored for two months. The monitoring was taken at 27 grid points on each biofilter per field visit. Results revealed that both the airflow and medium moisture content were unevenly distributed. The sun-facing side of the biofilters had significantly lower medium moisture content (p < 0.01) due to solar-induced water evaporation. The side directly facing the barn exhaust had the highest airflow. Airflows varied along the height of the biofilters, but no significant difference was noted. The uniformity of airflow and moisture content, characterized by coefficient of variance (CV) and distribution uniformity (DU) respectively, were examined over the monitoring campaign. Possible reasons for uneven distribution were explored and recommendations are made to address the uniformity issue. The findings from the study are expected to further the development and implementation of biofiltration technology for livestock odor control.

Ways to reduce the impact of livestock facilities on the environment

The results of the study of the impact of livestock facilities on the state of the environment are presented. To ensure environmental safety, pollutant emissions are regulated by implementing environmental protection policies. Therefore, there is a need to develop scientifically sound approaches to improve methods of regulating emissions of pollutants into the atmosphere from low-capacity livestock facilities, which determines the relevance of this work. The analysis of the existing researches taking into account the European system of inventory of EMEP («CORINAIR») is carried out. A number of measures have been identified to reduce emissions of pollutants into the atmosphere from livestock facilities. It is established that for the last 16 years there is a tendency to reduce the number of farm animals, in particular: cattle by 41.4% and pigs by 21.4%. The exception is poultry, which increased by 28.5% during this period. At the same time, as a result of economic activity of livestock facilities such pollutants as ammonia, hydrogen sulfide, methane, alcohols (methanol, ethanol, etc.), phenols, esters, carbonyl compounds (aldehydes and ketones), carbon acids, sulfides and disulfides, mercaptans, amines, carbon dioxide. The efficiency of introduction of entomological method of utilization of organic waste of animal husbandry which allows receiving simultaneously protein of animal origin and organic fertilizers with the improved physical and mechanical properties is established. Pig manure after processing by larvae of flies becomes a valuable organic fertilizer that has a nematodicidal effect. It is especially valuable for indoor use. Application of biohumus to the soil at the rate of 400 g/m2 reduces the number of nematodes and delays its emergence. Thus, obtaining humus is essentially a solution to the problem of using the ecological mechanism of soil fertility restoration. This addresses the issue of humus biotechnology, which is an alternative to soil chemicalization and creates the conditions for biologization and greening of agriculture. Also, one of the ways to reduce the negative impact on the environment is to dispose of waste in agriculture by producing biogas. This allows you to get a fuel mixture of gases with a heat of combustion of about 20–25 MJ/m3 and methane content in the range of 60–75%, as well as reduce the load of polluting gases on the environment.

Pathways for avian influenza virus spread: GPS reveals wild waterfowl in commercial livestock facilities and connectivity with the natural wetland landscape.

Zoonotic diseases are of considerable concern to the human population and viruses such as avian influenza (AIV) threaten food security, wildlife conservation and human health. Wild waterfowl and the natural wetlands they use are known AIV reservoirs, with birds capable of virus transmission to domestic poultry populations. While infection risk models have linked migration routes and AIV outbreaks, there is a limited understanding of wild waterfowl presence on commercial livestock facilities, and movement patterns linked to natural wetlands. We documented 11 wild waterfowl (three Anatidae species) in or near eight commercial livestock facilities in Washington and California with GPS telemetry data. Wild ducks used dairy and beef cattle feed lots and facility retention ponds during both day and night suggesting use for roosting and foraging. Two individuals (single locations) were observed inside poultry facility boundaries while using nearby wetlands. Ducks demonstrated high site fidelity, returning to the same areas of habitats (at livestock facilities and nearby wetlands), across months or years, showed strong connectivity with surrounding wetlands, and arrived from wetlands up to 1251km away in the week prior. Telemetry data provides substantial advantages over observational data, allowing assessment of individual movement behaviour and wetland connectivity that has significant implications for outbreak management. Telemetry improves our understanding of risk factors for waterfowl-livestock virus transmission and helps identify factors associated with coincident space use at the wild waterfowl-domestic livestock interface. Our research suggests that even relatively small or isolated natural and artificial water or food sources in/near facilities increases the likelihood of attracting waterfowl, which has important consequences for managers attempting to minimize or prevent AIV outbreaks. Use and interpretation of telemetry data, especially in near-real-time, could provide key information for reducing virus transmission risk between waterfowl and livestock, improving protective barriers between wild and domestic species, and abating outbreaks.

Physical and chemical properties of "Biolide" disinfectant

Development and testing of modern effective and at the same time safe and environmentally friendly drugs for disinfection in livestock facilities and processing plants - is in the field of view of livestock producers. Resistance of microorganisms to bactericidal substances, polyresistance, the formation of biofilms in the water supply and watering of animals - these are the challenges facing modern science. The effectiveness of disinfectants depends on the complex of active substances, which by their properties show both negative and positive qualities. To improve their stability, bactericidal, detergent action, it is necessary to control them at the development stage. The drug "Biolaid" was developed by the staff of the State Research Institute for Laboratory Diagnostics and Veterinary Sanitary Examination (Kyiv, DNDILDVSE). To study the physicochemical properties of the drug used to determine its organoleptic properties, indicators of corrosion activity, the value of surface tension and acidity. The paper presents the results of studies of physicochemical properties of the disinfectant "Biolaid" based on lactic acid, hydrogen peroxide and lactic acid. In particular, the corrosion activity of the disinfectant "Biolaid" was determined according to current methods, the amount of corrosion losses, the amount of surface tension and acidity. It has been experimentally established that Biolaid at low bactericidal 2.0% concentrations has low corrosion activity relative to the treated test objects, and 2 times lower than the reference disinfectant 2.0% NaOH. In 0.1% concentration lower from 6 to 39 times depending on the material. The surface tension of the working solution of the drug "Biolaid" is 71.47 mN / m In working concentrations, the drug has a pH = 6.2.

СРАВНИТЕЛЬНАЯ ВЕТЕРИНАРНО-САНИТАРНАЯ ОЦЕНКА РАЗЛИЧНЫХ ПРЕПАРАТИВНЫХ ФОРМ РОДЕНТИЦИДНЫХ ПРИМАНОК, ПРИМЕНЯЕМЫХ В ЖИВОТНОВОДЧЕСКИХ ОБЪЕКТАХ

The article presents a comparative veterinary and sanitary assessment of various preparative forms of rodenticidal baits for the control of synanthropic (mouse-like) rodents. The rodenticidal activity of deratization agents in the form of loose grain bait, paper bags, mineral and gelatin capsules were studied in laboratory conditions. New knowledge about the bait consumption by grey rats depending on their shape has been obtained. The variety of forms of rodenticides makes it possible to select the formulations of baits taking into account production features, natural and climatic characteristics and the availability of food resources at livestock facilities, as well as increase the attractiveness of the bait, prevent pollution of environmental objects with anticoagulant poisons and exclude possible poisoning of non-target animal species.

DIGITAL TWIN FOR TEMPERATURE AND HUMIDITY CHARACTERISTICS OF MICROCLIMATE IN LIVESTOCK FACILITIES

A digital twin for the temperature and humidity characteristics of the microclimate in livestock facilities has been developed. The digital twin is based on zoohygienic standards for the air environment in livestock premises, thermophysical properties of the air, requirements for microclimate systems and ventilation functioning.

ОЦЕНКА ТОКСИЧНОСТИ ПОЛИМЕРНОГО МАТЕРИАЛА «ПЕНОПЛЕКС», ИСПОЛЬЗУЕМОГО В ЖИВОТНОВОДСТВЕ

The article presents the results of toxicological assessment of the polymer material «Penoplex». The above material is made of expanded polystyrene and is used in many areas of production, including to reduce heat loss of livestock facilities. Hematological studies of experimental and control animals revealed no differences in clinical parameters of the blood of white rats, the serum content of total protein, immunoglobulins and sulfhydryl groups. The polymer material «Penoplex » does not have a negative effect on the indicators that characterize the immunity of animals and the antitoxic function of the liver. Significant differences of coefficients of the mass of the internal organs of the control and experimental groups of rats, kept in a cage with a polymer material «Penoplex », did not reveal. This indicates that the material «Penoplex» does not have a negative effect on the mass of the liver, kidneys, spleen and heart. The results of the research also indicate the absence of toxicity of the polymer material «Penoplex».

Изучение эпизоотической ситуации сальмонеллеза у телят в фермерских хозяйствах западного региона Азербайджана

According to the results of the conducted studies, the epizootic situation of salmonellosis of calves in sheep farms in the western region of Azerbaijan was studied, seasonality and stationarity were revealed, the clinic and pathological changes in salmonellosis of calves were studied. In order to disinfect livestock facilities with salmonellosis of calves, the use of potassium hypochlorite is recommended and disinfection modes are proposed.

Changes in blood biochemical parameters in the first two months of lactation in primiparous goats of the saanen breed

The biochemical blood profile is one of the tools for monitoring the feeding and keeping of animals, and their state of health. However, it requires clarification for individuals reared both in different climatic conditions and operated under different housing systems. In this regard, the purpose of our study was to assess the temporal changes in the levels of circulating metabolites and the activity of enzymes in the first-flowing Saanen goats in the first two months of lactation, reared with intensive maintenance technology in the climatic conditions of the North-West region of Russia. Blood sampling from primiparous goats (n = 32) was carried out twice: on days 20- 30 and days 50-60 after lambing (MayJune). In the blood serum, the concentration of total protein, albumin, urea, creatinine, glucose, total cholesterol was determined, as well as the activity of enzymes: aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP). It was found that by the end of the second month of lactation, the most significant changes occurred in lipid metabolism. Thus, the concentration of triglycerides and cholesterol in the blood increased by 71% and 11% (p˂ 0.001). The change in the parameters of protein metabolism was less dynamic: the content of total protein, creatine and albumin increased by 7.4%, 10.8% (p˂ 0.001) and 2% (p˂ 0.05), respectively. ALT activity increased by 19% (p˂ 0.001). Comparative analysis of blood biochemical parameters of the first and second months of lactation showed a positive dynamics of the process of adaptation of primiparous goats. The obtained values of blood biochemical parameters can be used to establish basic physiological values for 1-2 months of lactation in primiparous goats. This will facilitate a realistic assessment of the management, nutrition and health status of Saanen goats reared in large livestock facilities.

Fauna and Ecology of Dipterous (Díptera, Muscidae) Livestock Biocenoses of Ukraine

The biology and ecology of parasitic insects are closely related to the life of people, and the leading role belongs to animal husbandry. It is difficult to overestimate the negative influence of parasitic dipterans on productive animals, especially during the season of their mass reproduction and distribution. The work aimed to study the species composition of Diptera in different livestock biocenoses in eastern and central Ukraine. Entomological nets and traps were used to capture zoophilic flies, the number of insects was determined using the fly index, and luminescent markers TAT 33 with a powder fraction of 30 microns. The collected insects were identified according to the existing modern identifiers. As a result of the studies, the presence of Musca domestica (Linnaeus, 1758) was determined in all livestock facilities for keeping animals and birds. The largest number of house flies was noted in the facilities for keeping sows with suckling pigs (312.0±35.3) and fattening animals (277.5±6.1). M. domestica, M. autumnalis, and S. calcitrans accounted for 75.57% of the entire complex of zoophilic flies. The species M. vitripennis, M. tempestiva, L. irritans, H. atripalpis also occupied an important place among the species that form the entomoparasitocenosis (18.91%). In pasture biotopes, two species of flies (Ortellia caesarion Meigen and Ortellia cornicina Fabr.) have been identified. They do not attack animals, but are mineralisers of cattle feces. Luminiferous marker L-1 basic green (TAT 33) fixes well on insects and lasts for 5 days. The density of the fly population in the pig houses is 36% higher than in the calf houses. The results obtained are the basis for the development of innovative, scientifically grounded schemes for control and the fight against parasitic insects at livestock enterprises

ESTIMATION OF THE RADIOLOGICAL EFFICIENCY OF ENTEROSORPTION COMPOSITE FORAGE ADDITIVE APPLICATION IN LACTATING COWS DIET

A prototype of composite enterosorption feed additive based on peat modified with iron hexacyanoferrate (ferrocin) has been developed. A scientific and economic experiment was carried out on lactating cows on the basis of the MTP "Dublin" of JSC "Malozhinsky" of Bragin district of Gomel region. For this, three groups of lactating cows were formed: two experimental and one control, five cows each. When setting up for the experiment, the animals were selected according to the principle of analogous pairs, taking into account live weight, calving age, stage of lactation, and average daily milk yield. The maintenance and care of the experimental animals corresponded to the milk production technology adopted at the livestock facility, as well as the organization of labor. The diets of the experimental animals were compiled according to detailed feeding rates and were calculated to receive 18–20 kg of milk from a cow per day. Milk sampling was carried out from each cow of the experimental and control groups on the 0th, 6th, 12th, 18th and 22nd days of the experiment in accordance with the sampling scheme during morning milking according to STB-1051-2012 "Selection samples of milk and dairy products. General requirements". The determination of the specific activity of 137Cs (Bq/kg) in the studied samples of feed and milk was carried out on a γ-spectrometric complex "Canberra-Packard" with an error of no more than 30 %. The radiological efficiency of composite ferrocin-containing feed additive based on peat in relation to 137Cs has been studied. For the first time, the multiplicity of decrease in 137Cs content in milk of cows was es tablished during the use of composite ferrocin-containing feed additive based on peat by a factor of 4.6 in relation to the control.

USE OF DIGITALIZATION MEANS IN THE FORMATION OF THE MICROCLIMATE OF ANIMAL PREMISES

The study of information systems and technologies, specialized software products aimed at solving the problems of animal husbandry management and determining the prospects for their use by specialists is relevant. The main factor determining the life of animals is the environment. One of the ways to intensify livestock (pigs, cattle, poultry, etc.) is a comprehensive automation of labor-intensive technological processes, including the formation of the microclimate of livestock facilities, which would have a positive impact on animal health, productivity and product quality. However, animals are also affected by certain methods and methods of feeding, man-made content, zonal climate, heat-shielding properties of enclosing structures, air exchange rate, ventilation efficiency, sewage condition, manure removal and removal methods, lighting. The impact of microclimate on animals consists of a set of environmental factors: temperature, humidity, air velocity, chemical composition, microbial and dust pollution, lighting, etc. The main parameter of the air environment is temperature. This has the greatest impact on animal health and productivity. The hygienic value of temperature is that it affects the thermoregulation of the body, which is divided into the processes of chemical thermoregulation - the reaction of heat generation and the processes of physical thermoregulation - the regulation of heat transfer. The study of the technology of improving the efficiency of microclimate regulation in livestock premises based on the use of an automated control system is promising. Thus, changing the composition and properties of the environment, you can affect the body of animals, achieving high productivity.

Risk of Tracking Fire due to Disinfectants in Livestock Facilities

본 연구논문은 조류인플루엔자(AI), 구제역(FMD), 아프리카돼지열병(ASF) 등 가축 전염병 예방을 목적으로 축사시설에 사용하는 소독약의 트래킹화재 위험성에 관한 것이다. 10개 품목의 소독약(판매 순위)을 권장희석, 과희석(2배), 혼합희석(2종류) 3종류로 구분하여 총 24개 시료를 만들어 전기전도도 측정 및 트래킹 실험(KSC IEC 60112)을 실시하였다. 실험 결과, 권장희석 비율로 희석한 소독약의 전기전도도는 일반 수돗물 보다 1.6배 ~ 99.2배, 과희석(2배)한 경우는 2.1 배~170.2배, 혼합희석(2종류)한 경우는 10.0배 ~ 100.7배 높게 측정되었고, 트래킹 실험에서는 수돗물은 트래킹되지 않았지만 소독약은 모두 트래킹을 일으키는 것으로 나타났다. 예방대책으로는 농림축산검역본부의 소독제 효력시험지침에 소독약의 전기 전도도 기준을 즉시 마련하고, 방역당국과 축산관계자들을 대상으로 소독약에 의한 트래킹화재 위험성 예방교육이 필요한 것으로 나타났다.

Characterisation of engineered water nanostructures (EWNS) and evaluation of their efficacy in inactivating Escherichia coli at conditions relevant to livestock operations

Exposure to bioaerosols in enclosed livestock facilities have been reported to pose health risks to workers and animals. Environment-friendly methods for reducing bioaerosol levels in enclosed animal production units could provide important environmental control options. In this study, laboratory-scale electrospray modules were developed to generate engineered water nanostructures (EWNS) to inactivate microbes. The EWNS were generated using three spray liquids (reverse osmosis (RO) water, saline water, and NaOH solution). The physicochemical properties (size, lifetime, reactive oxygen species (ROS) content) of the generated EWNS were characterised. Results showed that the average diameter of the EWNS droplets ranged from 40 to 45 nm. It was found that approximately 17% of the generated EWNS was still present after 4.5 h, and that the most predominant ROS generated was OH·. Furthermore, the efficacy of the generated EWNS in inactivating Escherichia coli was assessed under conditions relevant to livestock facilities. The electrospray modules were installed in an acrylic chamber, which was used to simulate the airspace in an animal barn. After 60-min treatment, reductions in E. coli concentrations inside the chamber were 69%, 64%, and 50% using RO water, saline water, and NaOH solution, respectively, at a ventilation rate of seven air changes per hour (ACH). At 15 ACH, the efficacy of the EWNS generated using RO water was 37%. The results show the potential of the EWNS technology as a microbial decontamination method for animal confinement buildings; however, in-barn tests are necessary before it can be fully implemented in commercial livestock barns. • An electrospray system was developed to generate nanosized EWNS. • The generated EWNS could remain airborne for hours. • The EWNS was found effective in inactivating Escherichia coli.

Reduction of Ammonia Emissions from Laying Hen Manure in a Closed Composting Process Using Gas-Permeable Membrane Technology

Nitrogen losses during composting processes lead to emissions problems and reduce the compost fertilizer value. Gas-permeable membranes (GPM) are a promising approach to address the challenge of reducing nitrogen losses in composting processes. This study investigated the applicability of two GPM membrane systems to recover N released during the closed composting process of laying hen manure. The ammonia (NH3) capture process was performed using two different systems over a period of 44 days: the first system (S1) consisted of 120 m of an expanded polytetrafluoroethylene (ePTFE) membrane installed inside a 3.7 m3 portable, closed aerobic composter with forced ventilation; the second system (S2) consisted of 474 m of an ePTFE membrane placed inside as an external module designed for NH3 capture, connected to a closed aerobic composter through a pipe. In both cases, a 1 N H2SO4 acidic NH3 capture solution was circulated inside the membranes at a flow rate of 2.1 L·h−1. The amount of total ammonia nitrogen (TAN) recovered was similar in the two systems (0.61 kg in S1 and 0.65 kg in S2) due to the chosen membrane surface areas, but the TAN recovery rate was six times higher in system S1 (6.9 g TAN·m−2·day−1) than in system S2 (1.9 g TAN·m−2·day−1) due to the presence of a higher NH3 concentration in the air in contact with the membrane. Given that the NH3 concentration in the atmosphere of the membrane compartment directly influences the NH3 capture, better performance of the GPM recovery system may be attained by installing it directly inside the closed aerobic composters. Regardless of the chosen configuration, this technology allows N recovery as a stable and concentrated 1.4% N ammonium salt solution, which can be used for fertigation. The presented GPM systems may be used in community composting systems with low volumes of waste to be treated or in livestock facilities that have implemented best available techniques such as solid–liquid separation or anaerobic digestion, provided that the use of GPM technology in combination with these techniques also contributes to odor mitigation and improves biogas yields.