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Registros recuperados: 6
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Bioeconomic Evaluation of Substitution of Balanced Feed with Chaya (Cnidoscolus Chayamansa) Leaves in Tilapia Production AgEcon
Poot-Lope, Gaspar Roman; Gasca-Leyva, Eucario.
In Mexico, the culture of tilapia has developed in rural areas, where the main problem is low producer income. The state of Yucatan also experiences this situation, and scarcity of money needed to purchase inputs results in complementary feeding with chaya (Cnidoscolus chayamansa), whose leaves are edible for humans and animals. In this situation, CINVESTAV conducted experiments to determine the optimal level of substitution of balanced feed with ray chaya leaves. The test with 25% and 50% reduced balanced feed complemented with chaya (ad libitum) did not show significant differences (P>0.05) in growth compared to fishes fed with a complete ration of balanced feed (100% feed table). A bioeconomic model was developed, including a submodel of growth...
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic model; Cost minimization; Tilapia; Livestock Production/Industries; O13; Q22.
Ano: 2005 URL: http://purl.umn.edu/55999
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Economic Benefits of Animal Tracing in the Cattle Production Sector AgEcon
Elbakidze, Levan.
One of the options to prepare for a potential outbreak of an infectious livestock disease is to initiate an animal tracking system, which would provide information on animal movements and facilitate disease management. This study examines the benefits of implementing an animal tracking system in the context of a simulated cattle disease outbreak with and without animal tracking. Estimates are provided for some of the losses that would be avoided with an animal tracking system if an infectious animal disease were introduced. The results show that the economic efficiency of an animal tracking system depends on such factors as inter-herd contact rates, effectiveness of animal disease response actions, and the extent to which an animal tracking system...
Tipo: Journal Article Palavras-chave: Animal tracing; Cost minimization; Infectious disease spread mitigation; Livestock Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/8597
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ECONOMIC EFFECTS OF A BAN AGAINST ANTIMICROBIAL DRUGS USED IN U.S. BEEF PRODUCTION AgEcon
Mathews, Kenneth H., Jr..
Economic effects for three scenarios of antimicrobial drug use in livestock production -- a no-ban scenario and two levels of bans -- are examined through cost minimization and a partial equilibrium analysis. Results indicate that regulating antimicrobial drug use in livestock production would increase per-unit costs of producers previously using drugs and reduce beef supplies in the short run, reducing consumer surplus. Producers not previously using drugs would benefit from short-run price increases.
Tipo: Journal Article Palavras-chave: Antimicrobial drug; Ban; Beef production; Cost minimization; Feed efficiency; Growth function; Growth promotant; Livestock Production/Industries; C61; D21; D41; I118; Q11; Q12; Q18; R38.
Ano: 2002 URL: http://purl.umn.edu/15068
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How Far Can Poultry Litter Go? A New Technology for Litter Transport AgEcon
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
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Modeling of Avian Influenza Mitigation Policies Within the Backyard Segment of the Poultry Sector AgEcon
Elbakidze, Levan.
This study presents a conceptual model for the analysis of avian influenza mitigation options within the small poultry farm sector (backyard flocks). The proposed model incorporates epidemiological susceptible-infected-recovered (SIR) methodology into an economic cost-minimization framework. The model is used to investigate the implications and interdependencies of mitigation options that influence inter-flock contact rates of asymptomatic and symptomatic flocks, and reduce the duration of symptomatic and asymptomatic periods. The results indicates that for shorter asymptomatic periods the efforts to control inter-flock contract rates should concentrate on symptomatic flocks, while for longer asymptomatic periods the control of inter-flock contacts should...
Tipo: Journal Article Palavras-chave: Asymptomatic and symptomatic periods; Avian influenza; Contact rates; Cost minimization; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/42463
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Technical Documentation of the Regional Manure Management Model for the Chesapeake Bay Watershed AgEcon
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
Registros recuperados: 6
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