Consulta: subjectFacets:"Manure management"
Registros recuperados: 19
Data/hora: 09/06/2024 10:56:54

The influence of the season of the year and of dilution on the development of swine manure and wood shaves co-composting
Provedor de dados: 70
Autores: Higarashi,Martha M.; Sardá,Luana G.; Oliveira,Paulo A. V.
The objective of this research was to study the influence of factors related to the proper management of pig manure (lower dilution) and the season of the year in the progress of the co-composting of pig manure with wood shavings and in the final quality of the compost resulting from the treatments. In the first experiment, two types of swine manure were used: a diluted one (2% Dry Matter - DM), typical from the management usually used in Brazil, and a more concentrated one (6% DM). The manures were incorporated into the wood shavings (6L:1kg) over the course of four weeks. The development of composting was accompanied by monitoring of temperatures inside the piles and the emission of CO2 and CH4 gases during 65 days, including the period of incorporation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pig farming; Manure management; Compost; Gas emission.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200004

New Regulations Governing Concentrated Animal Feeding Operations Require New Solutions: Discussion
Provedor de dados: 31
Autores: Fleming,   Ronald A.; Thomas,   Michael H.
This paper discusses the three invited papers presented in the session titled “New Regulations Require New Solutions:  Federal Provisions Governing Concentrated Animal Feeding Operations” (i.e., CAFOs).  These papers provide an excellent review of current state and federal laws and an excellent summary of what has been and is currently being done with respect to CAFO regulation.  The papers present three different policy approaches: i) alternative performance standards, ii) location-specific regulation, and iii) insurance-based underwriting of CAFO discharges.  Each approach has its drawbacks; however, blending theses suggested policies into current regulations would result in efficiency gains.
Tipo: Journal Article
Palavras-chave: Alternative performance standards; Animal Feeding Operations; Confined Animal Feeding Operations; Environmental quality; Insurance; Livestock; Manure management; Market-based incentives; Regulation; Spatial regulation; D81; K32; Q52; Q55; Q58.
Ano: 2004
URL: http://purl.umn.edu/43349

Phosphorus-Based Application of Livestock Manure and the Law of Unintended Consequences
Provedor de dados: 31
Autores: Norwood,   F. Bailey; Chvosta,   Jan.
The application of manure phosphorus at rates above crop uptake has resulted in water pollution for some regions.  In response, new manure management standards will require some farms to match manure phosphorus applications rates with crop uptake.  For some regions, this will lead to more crop acres and a shift toward crops with greater nutrient uptake, both of which will increase nitrogen runoff.  The greater nitrogen runoff could offset the lower phosphorus runoff to result in greater water pollution.  This demonstrates the law of unintended consequences, which results when policy does not consider how economic agents respond to incentives.
Tipo: Journal Article
Palavras-chave: Best management practice; Eutrophication; Manure management; Nutrient runoff; Phosphorus standards; Pollution control; Water pollution; Environmental Economics and Policy; Production Economics; D6; Q1; Q2.
Ano: 2005
URL: http://purl.umn.edu/43715

Nitrate Pollution Control Policy and Its Impact on Farms' Performance: A Nonparametric Approach
Provedor de dados: 31
Autores: Piot-Lepetit,   Isabelle; le Moing,   Monique.
The purpose of this paper is to develop models with an individual and a collective management of the European Nitrate directive. The objective is to compare productive efficiency of farms under the two regimes. First, we develop a model that explicitly integrate the individual constraint on organic manure spreading. The individual threshold is introduced as a productive right. Then, we develop a framework that allows for modelling exchange of productive rights among producers. The simulation of a management of the spreading constrainst on organic manure at the regional level give an estimate of the potential gains that can be realised by allowing a collective maagement of the European environmental regulation. Models are based on a nonparametric frontier...
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental regulations; Manure management; Pig farming; Data Envelopment Analysis; Environmental Economics and Policy; C61; D21; Q12; Q52.
Ano: 2005
URL: http://purl.umn.edu/19458

How Far Can Poultry Litter Go? A New Technology for Litter Transport
Provedor de dados: 31
Autores: Carreira,   Rita I.; Young,   Kenneth B.; Goodwin,   Harold L., Jr.; Wailes,   Eric J.
Exporting northwest Arkansas excess turkey and broiler litter to partially fertilize nutrient-deficient cropland in eastern Arkansas can be more cost effective than to supply all crop nutrients with chemical fertilizer only, given current high fertilizer prices.  Cost savings are greater if litter is baled in ultraviolet resistant plastic and transported via truck, since backhaul opportunities reduce truck rates, or alternatively, if raw litter is shipped via a truck-barge combination.  Rice is the crop that allows for greater savings according to a mathematical programming model implemented in General Algebraic Modeling System (GAMS).
Tipo: Journal Article
Palavras-chave: Baling poultry litter; Barge transportation; Cost minimization; Manure management; Mathematical programming; Nutrient surplus; Poultry litter; Truck transportation; Agribusiness; Crop Production/Industries; C61; C65; Q12; Q30; Q53.
Ano: 2007
URL: http://purl.umn.edu/37050

DAIRY '96, PART III: REFERENCE OF 1996 DAIRY HEALTH AND HEALTH MANAGEMENT
Provedor de dados: 31
Autores: Ott,   Stephen L.
The NAHMS Dairy '96 Study was designed to provide both participants and the industry with information on the nation's dairy animal population for education and research.  The USDA's National Agricultural Statistics Service (NASS) collaborated with NAHMS to select a statistically valid sample yielding 2,542 producers.  Included in the study were 20 states that represented 83.1 percent of the U.S. milk cows as of January 1, 1996.  Veterinary Medical Officers (VMO's) and Animal Health Technicians (AHT's) collected data for Part III from 1,219 operations that had 30 or more milk cows on January 1, 1996, from February 20 through May 24, 1996.   Contact for this paper: Steven Ott
Tipo: Report
Palavras-chave: NAHMS; Dairy; Cattle; Health; Mastitis; Labor; Antibiotics; Biosecurity; Vaccination; Manure management; Livestock Production/Industries.
Ano: 1996
URL: http://purl.umn.edu/32752

Mitigating the Compliance Cost of a Phosphorus-Based Swine Manure Management Policy
Provedor de dados: 31
Autores: Yap,   Crystal; Foster,   Kenneth A.; Preckel,   Paul V.; Doering,   Otto C., III; Richert,   Brian T.
Regulatory changes by federal and state agencies portend a switch from nitrogen-based livestock manure disposal policies to phosphorus-based policies. This paper estimates the compliance costs of such a policy change for a hypothetical hog-grain farm in North Central Indiana. The farm includes 1,500 acres of cropland and has the capacity to raise 11,970 grow-finish hogs annually. The farm model also as the potential to produce four different crops on six different land types. A nonlinear math-programming model was developed to determine the optimal mix of management activities for a phosphorus-based regulation. The model allows mitigation of compliance costs via the choice between four different pig diets, three alternative methods of manure disposal,...
Tipo: Journal Article
Palavras-chave: Environmental policy; Manure management; Pork production; Q18.
Ano: 2004
URL: http://purl.umn.edu/42944

Technical Documentation of the Regional Manure Management Model for the Chesapeake Bay Watershed
Provedor de dados: 31
Autores: Aillery,   Marcel P.; Gollehon,   Noel R.; Breneman,   Vincent E.
The Regional Manure Management Model, developed for the ERS project on "Manure Management for Improved Water Quality," is used to evaluate the cost and feasibility of manure land application as a manure management strategy at the regional level. This model is a nonlinear mathematical programming model of animal manure-nutrient production and distribution applied to the Chesapeake Bay watershed. The model is designed to assess regional costs of manure management, transport, and land application in the Chesapeake Bay watershed, given the existing structure of the animal industry and manure-storage technologies currently in use. Manure-nutrient production is allocated within the basin to minimize costs to the animal sector, subject to land availability and...
Tipo: Report
Palavras-chave: Technical documentation; Regional analysis; Chesapeake Bay; Animal waste; Manure management; Nutrient management plan; Manure land application; Manure transport; Cost minimization; Optimization model; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2005
URL: http://purl.umn.edu/33570

Spatial Considerations in Air- and Water-Quality Tradeoffs for Animal Agriculture
Provedor de dados: 31
Autores: Gollehon,   Noel R.; Aillery,   Marcel P.
Total and average per ton costs of land-applying manure demonstrate the importance of spatial factors on the potential effect of policy limits for water and air emissions.  Per ton costs vary with the need to transport greater distances for land application, reflecting the spatial distribution of cropland and animal production.  Costs are estimated with a regional modeling framework, applied to the Chesapeake Bay watershed that integrates GIS-based spatial data within an optimization framework.
Tipo: Conference Paper or Presentation
Palavras-chave: Regional optimization; Geographic information systems; Spatial data; Manure management; Confined animals; Nutrient policies; Water quality; Air quality; Chesapeake Bay; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2007
URL: http://purl.umn.edu/9848

Beyond Water-Quality Regulations for CAFOs? Manure Management Costs to Meet Air-Quality Objectives
Provedor de dados: 31
Autores: Aillery,   Marcel P.; Gollehon,   Noel R.
Federal policy on manure management has focused on water-quality protection.  However, animal agriculture is an important source of ammonia-nitrogen and other air emissions, increasing attention on air-quality concerns.  Policies to address air emissions would influence both the costs of meeting water-quality objectives and environmental tradeoffs.  We consider hypothetical policies at a regional level.
Tipo: Conference Paper or Presentation
Palavras-chave: Manure management; Confined animals; Water quality; Air quality; Regional optimization; Chesapeake Bay; Environmental Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/19208

Air Emissions of Ammonia and Methane from Livestock Operations: Valuation and Policy Options
Provedor de dados: 31
Autores: Shih,   Jhih-Shyang; Burtraw,   Dallas; Palmer,   Karen L.; Siikamaki,   Juha.
The animal husbandry industry is a major emitter of methane, which is an important greenhouse gas. The industry is also a major emitter of ammonia, which is a precursor of fine particulate matter, arguably the number-one environment-related public health threat facing the nation. We present an integrated process model of the engineering economics of technologies to reduce methane and ammonia emissions at dairy operations in California. Three policy options are explored: greenhouse gas offset credits for methane control, particulate matter offset credits for ammonia control, and expanded net metering policies to provide revenue for the sale of electricity generated from captured methane gas. Individually, any of these policies appears to be sufficient to...
Tipo: Working or Discussion Paper
Palavras-chave: Methane; Ammonia; Carbon dioxide; Greenhouse gases; Climate change; Offset; Particulate matter; Net metering; Environmental policy; CAFO; Manure management; Biodigester; Electricity; Global warming; Cost-benefit; Incentive approach; Livestock Production/Industries; Q2; Q4; Q53.
Ano: 2006
URL: http://purl.umn.edu/10749

Perceptions of Rural Air Quality:  What Will the Neighbors Think?
Provedor de dados: 31
Autores: Lohr,   Luanne.
Individuals exposed to odors from livestock facilities do not report annoyance uniformly. The reaction to a detectable odor depends on perceptions of the odor and its source which are mediated by odor attributes and personal factors. Correlations among these factors were tested in a rural context using date from a pilot study of seventeen households neighboring two swine operations in Michigan. Annoyance was measured as the impact of the neighboring facility on enjoyment of property. Characterization of odor as a problem was positively correlated with offensiveness, frequency and duration of exposure. Annoyance was negatively correlated with term of residence, current employment on a farm, and acquaintance with the facility owner. Annoyance was positively...
Tipo: Journal Article
Palavras-chave: Correlation analysis; Environmental annoyance; Manure management; Odor nuisance; Agribusiness; Community/Rural/Urban Development; Environmental Economics and Policy.
Ano: 1996
URL: http://purl.umn.edu/90381

ECONOMIC AND STRUCTURAL RELATIONSHIPS IN U.S. HOG PRODUCTION
Provedor de dados: 31
Autores: McBride,   William D.; Key,   Nigel D.
Rapid change in the size and ownership structure of U.S. hog production has created new and varied challenges for the industry. This report describes an industry becoming increasingly concentrated among fewer and larger farms, and becoming more economically efficient. These changes have not come without problems. The increasing market control and power concentrated among packers and large hog operations, and the manure management problem posed by an increasing concentration of hog manure on fewer operations, are paramount concerns. Addressing these concerns through regulations would likely impose economic costs that could be passed on to consumers. In addition, the relative mobility of the hog industry means that regulations could result in significant...
Tipo: Report
Palavras-chave: Hog production; Industry structure; Structural change; Production costs; Contract production; Manure management; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/33971

AN ECONOMIC ANALYSIS OF THE DAIRY ENVIRONMENTAL COOPERATIVE IN NORTHEAST KANSAS
Provedor de dados: 31
Autores: Vogt,   Michael L.; Kastens,   Terry L.
In 1997, the Black Vermillion Dairy Environmental Cooperative (DEC) was started with an EPA 319A grant. Ten Kansas dairies located in the Kansas Black Vermillion Watershed were studied to evaluate the on-farm manure structures cost-shared by the DEC.   Net present value (NPV) analysis was used to evaluate the profitability associated with the manure structures.  The NPV analysis showed that in most cases, investing in a manure storage structure is a worthwhile venture and can be profitable for the dairy. However, cost-share assistance often will be needed in order to have positive pre-tax and after-tax NPVs.
Tipo: Conference Paper or Presentation
Palavras-chave: Dairy Environmental Cooperative (DEC); Manure management; Net Present Value (NPV) analysis; Cost-share; Concrete manure storage; Environmental Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/20516

Changes in Manure Management in the Hog Sector
Provedor de dados: 31
Autores: Key,   Nigel D.; McBride,   William D.; Ribaudo,   Marc.
In recent years, structural changes in the hog sector, including increasing farm size and regional shifts in production, have altered manure management practices. Over the same period, changes to the Clean Water Act, new state regulations, and increasing local conflicts over odor have influenced manure management decisions. This study uses data from two national surveys of hog farmers to examine how hog manure management practices vary with the scale of production and how these practices evolved between 1998 and 2004.  The findings provide insights into the effects of structural changes and recent policies on manure management technologies and practices, the use of nutrient management plans, and manure application rates.
Tipo: Conference Paper or Presentation
Palavras-chave: Hog production; Manure management; Structural change; Environmental regulation; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/6071

Understanding Citizen Complaints Regarding Michigan Agricultural Operations
Provedor de dados: 31
Autores: Hadrich,   Joleen C.; Wolf,   Christopher A.
Tipo: Working or Discussion Paper
Palavras-chave: Citizen complaints; Environmental compliance; Livestock farms; Manure management; Environmental Economics and Policy; Farm Management; Q24; Q53; Q58.
Ano: 2009
URL: http://purl.umn.edu/49274

A REGIONAL MODELING STRUCTURE FOR ASSESSING MANURE MANAGEMENT POLICIES: APPLICATION TO THE CHESAPEAKE BAY WATERSHED
Provedor de dados: 31
Autores: Aillery,   Marcel P.; Gollehon,   Noel R.; Ribaudo,   Marc; Breneman,   Vincent E.
A modeling framework addresses manure management policies within the Chesapeake Bay watershed.  Policy focus is on manure-land application at agronomic rates, as proposed under the EPA/USDA Unified Strategy.  Manure-nutrient flows are assessed subject to assimilative capacity of farmland.  National data bases and GIS coverages facilitate model transferability to other watersheds.
Tipo: Conference Paper or Presentation
Palavras-chave: Manure management; Confined livestock operations; Regional optimization; Chesapeake Bay; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/20530

Recovery of ammonia from anaerobically digested manure using gas-permeable membranes
Provedor de dados: 63
Autores: García-González,Maria Cruz; Vanotti,Matias B.; Szogi,Ariel A.
ABSTRACT Nitrogen (N) can be recovered from different types of wastewaters. Among these wastewaters, anaerobically digested swine manure (digestate) has the highest N content in ammonia form (NH3). It is desirable to reduce N in digestate effluents to safely incorporate them in arable soil in N vulnerable zones (NVZ) and to mitigate NH3 emissions during N land application. Additional benefit is to minimize inhibition of the anaerobic process by removing NH3 during the anaerobic digestion process. This work aimed to apply the gas-permeable membrane technology to evaluate ammonia (NH3) recovery from high-ammonia digested swine manure. Anaerobically digested swine manure with NH4+ content of 4,293 mg N L−1 was reduced by 91 % (to 381 mg N L−1) during the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: N removal; Digestate; Manure management; Membrane technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500434

Economies of scale in the production of swine manure
Provedor de dados: 45
Autores: Losinger,W.C.; Sampath,R.K.
Manure production on grower/finisher swine operations in the United States was examined using data from 184 grower/finisher swine operations that participated in the United States National Animal Health Monitoring System's 1995 National Swine Study. Two methods were used: one, assuming that pigs produced 8.4% of their body weight in manure each day; another using the difference between feed fed and weight gained as a proxy variable to study manure production. Using this latter approach, a production function was developed. The function exhibited diminishing returns to scale when food waste was not fed to pigs, but constant returns to scale when food waste was included in their diets. The difference between feed fed and weight gained was lower on operations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swine; Waste production; Manure management; Pork production; Returns to scale.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000300019