Utilization Of Manure Research Articles

Foodborne illness prevention in Debre Berhan, Ethiopia: Preliminary efforts to understand household agricultural practices

While strategies to mitigate risks for foodborne illness and childhood diarrhea via sanitation and behavioral interventions have been explored, there is a dearth of knowledge about household practices regarding food production and use, livestock, and other sources of risk for foodborne illness in urban and peri-urban areas. The objective of this research was to increase understanding of household agricultural practices in Debre Berhan, Ethiopia in order to design targeted behavioral interventions to improve food safety and decrease diarrheal disease. A convenience sample of 21 teachers and parents were recruited for a mixed-methods pilot survey. The survey covered topical areas such as methods for growing, washing, and cooking produce, specifically focusing on practices in home vegetable gardens. Participants were also asked about fertilizers and manures used, animals on the property, and irrigation water sources. Descriptive statistics were calculated, and data were analyzed with SAS 9.2. The majority ofparticipants (76.2%) reported growing some or all of their own food, and many used compost (62.5%) and manure (62.5%) as fertilizer. Uncomposted manure was used as fertilizer by half (50.0%) of respondents who reported the use of manure. Respondents most commonly reported raising chickens (23.8%), yet among those using manure, they most commonly reported using sheep or lamb manure as fertilizer (50%). Most (93.7%) respondents used municipal water to irrigate their crops, while none of the respondents reported using surface water to irrigate. Nearly all (95.2%) reported always washing their produce before eating it. Respondents most commonly requested education regardinghow to more effectively grow produce. This study suggests that children and adults in Debre Berhan may have a high risk of exposure to pathogens via contact with uncomposted manure and multiple species of animals. Findings identify an opportunity for increased education in the topical areas of urban agriculture and diarrheal disease prevention. In particular, education regarding the safe utilization of manure as fertilizer could be included in agricultural extension programs. Additional research is needed to understand the extent of exposure via common household sources to pathogens that cause diarrheal disease.

Increased growth and production of irrigated rice by providing cow organic manure and NPK compound fertilizers with planting systems Jajar Legowo 4:1 in the Village of Tanjung Keriahan, Langkat Regency, North Sumatera

Until now the average national rice production that can be achieved is around 4-5 tons/ha. To increase production that can be achieved above the national average, new efforts in agronomic technology are needed to overcome it. One of the efforts that can be done is to examine the utilization of organic cow manure and NPK fertilization with the Jajar Legowo 4: 1. The purpose of the study is to obtain the optimum dose of cow manure and NPK compound fertilizer with high rice production achievements. The study was conducted in the Irrigated Rice Region of Tanjung Keriahan Village, Langkat Regency, North Sumatra Province. The study used Randomized Block Design with fertilizer treatment for organic materials in cow 4 levels of dosage: 0, 5, 10, 15 tons / ha and NPK compound fertilizer application with 5 treatment doses: 0, 100, 200, 300, 400 kg / ha. The results showed that the growth and development of rice plants Mekongga variety that were studied were best shown in the giving of 15 tons/ha of cow manure and NPK fertilizer application of 400 kg/ha.

Research Progress of Energy Utilization of Agricultural Waste in China: Bibliometric Analysis by Citespace

Energy utilization of agricultural waste, due to the depletion of petroleum resources and the continuous deterioration of the ecological environment, has become an increasingly important development area at present, with broad prospects. The Citespace software was used to systematically summarize the research hotspots, development, and frontiers of researches on the energy utilization of agricultural waste in China from 1999 to 2018. The results show that (1) the number of publications in this field has increased, which includes a steady development stage, a rapid development stage, and a fluctuation and decline stage. (2) Research hotspots focused on technology for energy utilization of agricultural waste, benefits analysis of energy utilization of agricultural waste, energy conversion and upgrading path of agricultural waste, and energy potential of agricultural waste. (3) Development of research hotspots go through five stages: “technology for energy utilization of straw and the disposal of livestock and poultry waste”, “exploration of energy utilization mode of agricultural waste and the disposal of by-product from energy utilization of agricultural waste”, “technology upgrading from agricultural waste to fuel ethanol and recycling of livestock and poultry waste”, “resource recycling of by-product from biogas ” and “energy utilization of livestock and slaughterhouse waste”. It has revealed the focus in this field was changing from planting waste to breeding waste, and from unprocessed waste to by-product from energy utilization. (4) Energy utilization of slaughterhouse waste and cow manure has started to be considered as the frontiers of researches.

Ecological and technological criteria for the efficient utilization of liquid manure

The article discusses the prospects for the development of environmental management in the disposal of livestock waste, in particular liquid manure, as part of an industrial approach to it. The data on the concentration of nutrients in liquid manure depending on its moisture are presented. Based on the analysis of empirical data and the results of previous studies, an exponential dependence is derived that indicates the relationship between the initial moisture content of liquid manure and its final volume. Criteria of effective utilization of liquid manure are formulated taking into account environmental and technological specifics.

Multi-objective fuzzy optimization for sustainable irrigation planning

Abstract The objective of the present work is to determine an optimal cropping pattern under uncertainty, which maximizes four objectives simultaneously, including net benefits (NBF), crop production (CPD), employment generation (EGN) and manure utilization (MUT). Except the objective of maximizing the NBF, the other objectives are related to sustainability. To deal with uncertainty, a multi-objective fuzzy linear programming (MOFLP) model has developed along with fuzziness in decision parameters (objective function coefficient, cost coefficients, technological coefficients and resources) and decision variables (area to be irrigated under each crop in each season) and applied the same to Jayakwadi Project Stage-I, Maharashtra, India. The present study is in the form of a successful attempt to deal with irrigation planning associated with sustainability and uncertainty.

Heavy Metals Uptake of Salty Soils by Ornamental Sunflower, Using Cow Manure and Biosolids: A Case Study in Alborz city, Iran

Heavy metals are among the most critical environmental pollutants close to industrial areas. One example is the cultivated fields in the south of Alborz industrial city in Iran, which is irrigated by treated industrial wastewater. It is contaminated by heavy metals and irrigation with wastewater treatment plants effluent, which made it salty. In this study, the application of 2 amendments, biosolids and cow manure, in improving the heavy metal accumulation in the ornamental sunflower from these types of soils was investigated. A greenhouse experiment using a completely randomized design with 4 replications and applying cow manure and biosolids in 3 weight ratios (6%, 12%, 25%) was conducted to evaluate the efficiency of sunflower in removing Pb, Ni, and Zn from the soil. Adding the amendments increased the rate of germination by 50% to 176%. Although the simultaneous utilization of cow manure in high ratios with biosolids and cow manure with low biosolids decreased the sunflower survival, nonetheless, the simultaneous addition of these organic amendments could increase the survival rate in other treatments. Moreover, the plants’ biomass was increased by adding modifiers such as cow manure and biosolids. The results showed that in treatments with 2 modifiers, the remediation factor of Pb, Zn, and Ni has increased 83.7 to 95.5, 78.4 to 87.5, and 74.9 to 94.9, respectively, in comparison to the control one. Therefore, we conclude that adding biosolids and cow manure simultaneously could improve the ornamental sunflower ability to accumulate heavy metals.

Method of biological treatment of agricultural waste by microbial synthesis

Traditional manure management is unacceptable for dilute manure, the share of which in the structure of organic waste from livestock farms and complexes is continually increasing. The approach is relevant, at the first stage of implementation, it is necessary to create the supply base for non-conventional energy using, including organic biomass energy (manure, crop waste, etc.). Also, the problem of waste utilization is closely linked to another environment protection, which requires intensive recycling of animal agriculture. It requires necessary to search reclamation methods that would ensure the utilization of agrotechnical, energetic, feed, and other properties. The article presents the treatment process of manure utilization by microbial synthesis.

Manure Utilization from Cows, Goats, and Chickens as Compost, Biochar, and Poschar in Increasing the Red Chili Yield

This study aimed to determine the characteristics of biochar, compost, and poschar from livestock manure waste and its effect on the yield of red chili plants. Randomized Block Design (RBD) with nested patterns was used in this study. The treatment composition consisted of 9 types of fertilizer (cow compost, goat compost, chicken compost, beef biochar, goat biochar, chicken biochar, beef poschar, goat poschar, and chicken poschar), and 3 levels of fertilizer doses (5, 10, and 15-ton ha-1) and one control treatment. The results showed that the type of fertilizer treatment did not significantly influence all observed variables, except the maximum plant height and fresh weight of shoot had a very significant effect. While the dose of fertilizer did not have a significant effect on most of the variables observed except for the height of the chili plant, the weight of the fresh stem and leaves, and the weight of the fresh chili harvested. In various types of fertilizer treatments, the maximum plant height obtained in chicken biochar (111.53 cm), which shows a slight difference when it was compared with the lowest plant height of 99.58 cm in biochar goat. The treatment of compost, biochar, and poschar sourced from 15 tons ha-1 chicken manure achieved the highest yields of fresh weight of chili harvested respectively 266.06 g, 270.95 g, and 280.05 g which were significantly increased 39.16%, 41.72%, and 46.48% compared with control (without treatments).

Slurry Acidification as a Tool to Reduce Ammonia Emissions

Ammonia emissions are a worldwide major environmental concern. In 2017, ammonia emissions in the European part of Russia amounted to 80.9 thousand tons, of which up to 56.9 thousand tons came from agriculture. The main source of ammonia in this sector is the farm animal/poultry manure (slurry) utilisation technologies. Slurry acidification technology (SAT) is one of the methods to reduce ammonia emissions. ( Research purpose ) To assess the potential application of this technology in the Russian part of the Baltic Sea catchment area within the North-West Federal District of the Russian Federation. ( Materials and methods ) The area under study included Republic of Karelia, Kaliningrad, Leningrad, Novgorod and Pskov Regions. The authors considered the statistical data on the farm animal stock and the slurry output in the pilot area. The dynamic pattern of pig slurry pH was experimentally determined. The economic efficiency of slurry acidification technology was calculated for two functioning livestock complexes. ( Results and discussion ) According to statistical data, around 11.8 million tons of animal/poultry manure is produced in the pilot area annually, including around 7.4 million tons of slurry, which could potentially be acidified. Three SAT options – in-house, in-storage and in-field application – were considered for the Russian conditions. The main limiting factors for SAR application were identified. The SAT introduction costs and economic benefits were compared. ( Conclusions ) The prospects of SAT introduction in the pilot region were estimated. The need for the integrated research under the Russian conditions involving engineers, biologists, soil scientists, ecologists and other specialists, who could prove the feasibility and economic efficiency of the slurry acidification technology, was established.

Building The Village of People Become a Healthy and Productive Community

Dusun Penggung is one of the Dusun (sub-village) located in Giripurwo village, Girimulyo district, Kulonprogo regency. The geographical condition, dry soil nd far distance from the city are the main factors of underdeveloped village. Most of the people work as rice and corn farmers. During the dry season, there is a decline in agricultural activities because lack of water so that the people leave the farmer works to raising livestock and cultivating fish. The problem that occurs is the lack of skill in utilizating cattle dung to be used as soil fertilizer, in fish farming which has a great potential to increase income, in the health sector where the majority of Dusun Penggung residents work from morning to evening, which should require special attention on the health. Based on these potentials and problems, building village society to be a healthy and productive society program was conducted. The objectives of the program are to increase the knowledge and insight on the use of animal manure as fertilizer, increase understanding of fish farming procedures and productivity by making proper constructed fish ponds, provide information about various plants that are beneficial to health, and provide knowledge about telang flowers tea and natural dyes to maintain health. The main programs carried out included the utilization of animal manure, counseling and training on fish farming, counseling and training on planting, and utilization of telang flowers tea for health.

Rational utilization of leguminous green manure to mitigate methane emissions by influencing methanogenic and methanotrophic communities

Although rice straw return is widely recommended for maintaining or improving soil fertility and rice yields, it inevitably increases methane (CH4) emissions. Effective measures to mitigate CH4 emissions while guaranteeing grain yields are urgently needed. A 2-year mesocosm experiment was conducted. Six management systems, i.e., no residue (traditional management, CF), 100% rice straw (a popular practice among farmers, FR), 50% rice straw (F1/2R), leguminous green manure (FM), mixture of leguminous green manure and 100% rice straw (FMR), and a mixture of leguminous green manure and 50% rice straw (FM1/2R), were used. Compared with the CF, the organic residue returns could effectively improve rice productivity but increase the CH4 emissions. Notably, when compared with the FR, both F1/2R and FM could reduce the CH4 emissions, with equal crop yields, and FM1/2R not only increased the rice yields but also reduced the CH4 emissions, whereas FMR increased the rice yields and the CH4 emissions. Applications of organic residues significantly increased the soil methane production potentials (MPPs), methane oxidation potentials (MOPs), the abundances of methanogens and methanotrophs, and changed methanogenic and methanotrophic community structures in comparison with the CF. The partial least squares path model (PLS-PM) results showed that the MPPs had a strong direct effect on CH4 emissions, whereas an abundance of methanogens could serve as a proxy for predicting CH4 emissions. Moreover, relatively high MOPs associated with high Type I/Type II methanotroph ratios and relatively low dissolved organic carbon (DOC) concentrations were found to be central in lowering CH4 emission fractions under the F1/2R and FM1/2R treatments. Above all, the combined utilization of leguminous green manure and rice straw exhibited potential prospects for the enhancement of rice yields and for the mitigation of CH4 emissions, and the practice of mixing leguminous green manure with 50% rice straw performed the best of the treatments tested.

Effect of pyrolysis temperature on characteristics, chemical speciation and environmental risk of Cr, Mn, Cu, and Zn in biochars derived from pig manure

The comprehensive analysis of environmental risk for heavy metals in pig manure was essential for optimization of pyrolysis conditions and scientific utilization of pig manure biochars as soil amendment. However, in previous studies, the selected pyrolysis temperature points were limited and temperature interval was large, it’s was difficult to accurately verify the effect of pyrolysis temperature on chemical speciation and environmental risk of heavy metals. Therefore, in this study, pig manure was pyrolyzed at 300–700 °C with a small interval of 50 °C to study the effect of pyrolysis temperature on characteristics and environmental risk of Cr, Mn, Cu and Zn in pig manure biochar. Results indicated that the characteristics of biochars (>500 °C) were relatively stable. The biochar obtained at 700 °C exhibited the largest surface area (8.28 m2 g−1) and pore volume (25.17 m3 kg−1), secondly is the biochar derived at 500 °C. The total percentages of exchangeable and acid fraction and reducible fraction decreased from 16.98% to 9.43% for Cr, 85.60% to 65.55% for Mn, 57.26% to 10.61% for Cu, 37.90% to 13.78% for Zn, respectively, suggesting that exchangeable and acid fraction and reducible fraction of Cr, Mn, Cu and Zn in pig manure were transformed into oxidizable and residual fractions after pyrolysis. The leaching rates, risk assessment code and potential ecological risk index values significantly decreased after pyrolysis and presented lower value at 500 and 700 °C. Biochars derived at 300–700 °C conditions posed no phytotoxicity with germination index >80%. Correlation analyses revealed that larger surface area, pore volume and pH values of biochars may help to immobilize heavy metals and reduce bioavailability. These findings demonstrated that bioavailability and toxicity of Cr, Mn, Cu and Zn in pig manure biochar were greatly reduced after pyrolysis and the optimum temperature was 500 °C considering energy cost.

Study of the performance of biogas production by mixed fermentation of cow dung, deer manure, and mushroom fungus

AbstractAnaerobic digestion (AD) of livestock and poultry manure to produce biogas can not only improve environmental problems, but also effectively utilize waste. In order to maximize the resource utilization of livestock and poultry manure, the AD experiments of mixing cow dung, deer manure, and mushroom fungus were carried out. The changes of AD biogas production (daily and cumulative biogas production), CH4 content, volatile fatty acids (VFAs), pH at different temperatures (20, 35, and 50°C), and mixing ratios were studied, and the optimum reaction conditions were discussed. Results show that with the increase in temperature the biogas production rate and the cumulative biogas production at each proportions increase. At 20°C, the amount of biogas generated is very small. Under different proportions of raw materials, the cumulative biogas production first increased and then decreased. The best biogas production is at a temperature of 50°C and a proportion of cow dung, deer manure, and mushroom fungus is 0.3:0.4:0.3. The unit total solid biogas production rate reached 0.23 L·g−1. The mixed fermentation of livestock manure and mushroom fungus made up for the inadequacy of its separate fermentation performance and was also an effective method to improve the biogas rate and comprehensive utilization rate of livestock manure. The results of this study are of great significance in promoting the utilization of livestock and poultry manure.

Contamination of hen manure with nine antibiotics in poultry farms in Ukraine

The problem of processing, use and utilization of poultry manure contaminated with antibiotics remains unsolved not only Ukraine but around the world, and theatment and prevention of highly contagious infectious diseases among birds requires antibacterial medication use. By liquid chromatography, 293 hen manure samples of 12 Ukrainian industrial flocks of poultry farms were studied. The residual content of 9 antibiotics in the hen manure was found, including 38.2% of tetracycline preparations (doxycycline, oxytetracycline, tetracycline and chlortetracycline), fluoroquinolone (enrofloxacin and norfloxacin) including combinations of incompatible tetracyclines and fluoroquinolones, broad-spectrum penicillins (amoxicillin), fenicols (florfenicol), macrolides (tylosin) and one sulfanilamide preparation (sulfametazine). The most common antibiotics in hen manure of Ukrainian industrial flocks of poultry farms are the antibiotics of the tetracycline group, the main one being doxycycline. A high correlation was determined between the release of doxycycline with eggs and hen manure after the preparation was used perorally in preventive and therapeutic doses. Time of complete excretion of doxycycline from the hen body at the preventive dose (50 mg/L of water for 7 days) was 14 days for manure, 8 days for eggs, following its withdrawal, and at the therapeutic dose (100 mg/L of water for 7 days ) – 20 days for manure, and 9 days for eggs, following its withdrawal. The perspective of using the obtained data about the duration of excretion of doxycycline with hen manure consists in confirmation of the time of the antibiotic’s excretion with manure following its use for preventive or therapeutic purpose, which will help in controlling it as a source of environmental pollution. The time of doxycycline excretion from the body of hens with eggs and manure may be used practically by professionals in veterinary medicine in the case of prescribing or replacing antibiotics for treatment of infectious diseases of poultry to prevent the combination of incompatible preparations in the body and manure. The obtained experimental data may form the basis for the development of national regulations on the processing, usage and utilization of manure of hens under treatment with antibiotics.

Analyzing the Effect of Livestock Manure Management Policy on the Utilization of Livestock Manure

Analyzing the Effect of Livestock Manure Management Policy on the Utilization of Livestock Manure

Effects of applying inorganic fertilizer and organic manure for 35 years on the structure and diversity of ammonia‐oxidizing archaea communities in a Chinese Mollisols field

In this study, we investigated the physicochemical properties of soil, and the diversity and structure of the soil ammonia‐oxidizing archaea (AOA) community, when subjected to fertilizer treatments for over 35 years. We collected soil samples from a black soil fertilization trial in northeast China. Four treatments were tested: no fertilization (CK); manure (M); nitrogen (N), phosphorus (P), and potassium (K) chemical fertilizer (NPK); and N, P, and K plus M (MNPK). We employed 454 high‐throughput pyrosequencing to measure the response of the soil AOA community to the long‐term fertilization. The fertilization treatments had different impacts on the shifts in the soil properties and AOA community. The utilization of manure alleviated soil acidification and enhanced the soybean yield. The soil AOA abundance was increased greatly by inorganic and organic fertilizers. In addition, the community Chao1 and ACE were highest in the MNPK treatment. In terms of the AOA community composition, Thaumarchaeota and Crenarchaeota were the main AOA phyla in all samples. Compared with CK and M, the abundances of Thaumarchaeota were remarkably lower in the MNPK and NPK treatments. There were distinct shifts in the compositions of the AOA operational taxonomic units (OTUs) under different fertilization management practices. OTU51 was the dominant OTU in all treatments, except for NPK. OTU79 and OTU11 were relatively abundant OTUs in NPK. Only Nitrososphaera AOA were tracked from the black soil. Redundancy analysis indicated that the soil pH and soil available P were the two main factors that affected the AOA community structure. The abundances of AOA were positively correlated with the total N and available P concentrations, and negatively correlated with the soil pH.

Technology of Poultry Manure Utilization as a Renewable Energy Source

the aim of the research is to improve the efficiency of technologies for recycling poultry manure. The achievement of this goal involves the development of technological regulations for the processing of manure, research and development work on the creation of technological lines for the production of fuel briquettes and organic fertilizer, development of the technological process of processing of manure and its introduction into production. The technological scheme of the manure processing complex has been developed and substantiated, which includes: a receiving and storage station for receiving manure coming from poultry houses, and its dosed supply for further processing; a container for collecting liquid formed during the drying of manure; a technological line for the production of fuel briquettes and a line for the production of organic-mineral fertilizer. The capacity of the complex with a litter moisture content of 65-70% coming for processing is about 5 t/h. It is proved that the annual processing of manure at the round-the-clock operation of the complex will be about 43.0 thousand tons. At the same time, the production of organic-mineral fertilizers with a nutrient content of up to 32% will be about 1.5 thousand tons, and the fuel briquettes with a calorific value of up to 18.0 mJ/kg will be about 8.0 thousand tons. The estimated annual economic effect from the processing of litter on this complex is about 20.0 million rubles, the payback period of the complex is up to 1.5 years. This technology of poultry manure utilization allows to process all poultry manure removed from poultry houses in the stream, as a result of which there is no need for a litter storage. The production of organic fertilizer can solve the problem of increasing soil fertility. When the price of one ton of this fertilizer is 5thousand rubles and the contents until 320 kg of active ingredient, its use in the cultivation of crops would be economically profitable. As a result of the utilization of manure through this technology, the company receives energy, agro-chemical, economic, environmental and social effects.

NUEVO MODELO DE HIDRÓLISIS EN LA CO-DIGESTIÓN DE ESTIÉRCOL DE VACA CON RESIDUOS VEGETALES: UNA MODIFICACIÓN DEL ANAEROBIC DIGESTION MODEL No. 1

A new model of the stages of disintegration and hydrolysis, and co-digestion process following the classical Anaerobic Digestion Model No.1 (ADM1) structure is proposed. In the new method, substrate-microorganism relationships are represented using the Contois equation rather than the first order models previously used to represent substrates in the degradation process. This model was validated by assessing the biogas production from the co-digestion of vegetable (V) and manure (M) with variations in the V/M ratio in the feed. The highest biogas and yield levels were obtained when the feed ratio was 50/50 V/M. This finding was reproduced by running simulations of the original and modified ADM1. The original ADM1 explains the low digestibility and utilization of manure for biogas production as a consequence of a slow disintegration or hydrolysis stage, which depends exclusively on the disintegration and hydrolysis constants used. The new model offers a more mechanistic explanation; it assumes unfavorable substrate-microorganism relationships, which cause disintegration to become a limiting factor in the process. In addition, biogas production in the new model is primarily associated with carbohydrate degradation, as well as low concentrations and rapid consumption of intermediary metabolites, which do not favor the proliferation of acetanogenic or methanogenic communities.

Response of nitrogen pollution in surface water to land use and social-economic factors in the Weihe River watershed, northwest China

Water pollution is affecting China’s water resources and environmental sustainability. Specifically, nitrogen pollution has become highly problematic in water management. To identify nitrogen pollution and its sources in the Weihe River, northwest China, concentrations of different forms of nitrogen, and δ15N and δ18O compositions were analyzed. The mean nitrate nitrogen (NO3−-N), ammonium nitrogen (NH4+-N), and nitrite nitrogen (NO2−-N) concentrations were 4.70, 0.34 and 0.09 mg L-1, respectively, indicating that nitrate was the dominant form of nitrogen pollution. The middle and lower reaches of the Weihe River suffered more severe nitrogen pollution problems than the upper reaches. The stable isotope and Bayesian model revealed that manure, domestic sewage and industrial wastewater discharge constituted the main sources of NO3−-N pollution, with the contribution of 71.3% of the three sources. The redundancy analysis (RDA) showed a positive correlation between population, industrial wastewater, domestic sewage, livestock and nitrogen pollution concentrations. Forestlands and grasslands had negative effects on surface water nitrogen concentrations, with a total reduction effect of 55.8%. To improve the surface water quality in the Weihe River, it is recommended to increase sewage treatment, improve livestock manure utilization and refine the land-use structure of the watershed.

Environmental assessment of livestock farms in the context of BAT system introduction in Russia.

The article focuses on the environmental and economic assessment of animal/poultry manure utilisation technologies as the sources of the greatest negative impact on environment from agriculture. This procedure is especially topical in the context of current transition to BAT system in Russia. Russian BAT reference books on intensive rearing of pigs and intensive rearing of poultry came into force on June 1, 2018. At present, the large-scale livestock farms face the difficult task of selecting efficient technologies for manure utilisation with due account for their performance potential and the opportunities for end products use. To address the relevant practical issues, the criteria for the environmental and economic assessment of technologies were developed for selecting the rational technological solutions adjusted to the conditions of particular agricultural enterprises. Environmental assessment was based on the nitrogen saving coefficient. The developed approaches were applied to a dairy farm for 2600 head, a poultry factory for 1 million head and a full-cycle pig rearing complex for 16,500 head. The best suited technologies of animal/poultry manure utilisation were substantiated for these enterprises, which would allow achieving the reduction in environmental pollution by nutrients at the economically justified costs.