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Registros recuperados: 202 | |
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Núñez,Pedro; Demanet,Rolando; Matus,Francisco; Mora,Maria de la Luz. |
The grazing management of grassland has a direct effect on nitrogen (N) recycling. This is an important reason why management has become an alternative to improve the grassland production and quality, in turn to make it more suitable for the environment. However, the livestock system intensification induces changes in the natural dynamics of the N cycle, accelerating gas emmisions (e.g. ammonia, NH3 and nitrous oxide, N(2)0) and leaching losses from soil under grazing. When the amount of N in the environment increases, there is an impact on smog episodes, global warming, stratospheric ozone depletion, acid rain and eutrophication of fresh water. There are different techniques to evaluate the gases emitted from the soil. This klonowledge is useful to design... |
Tipo: Journal article |
Palavras-chave: Ammonia; Grazing; Management; Nitrogen; Nitrous oxide; Livestock. |
Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000300006 |
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Silveira, Breno Carrillo; Silva, Rubicleis Gomes Da; Silveira, Aurilene Oliveira De Araujo. |
Em 2004, o Acre possuía um Produto Interno Bruto (PIB) igual a R$ 3.241.847.000,00, com PIB per capita igual a R$ 5.143,00. Segundo dados do IBGE, os valores adicionados ao PIB na agropecuária, na indústria e no serviço, foram respectivamente de R$ 179.312.000,00; R$ 853.043.000,00 e R$ 1.999.670.000,00. Nesse contexto, torna-se relevante saber como as atividades econômicas impactam sobre a formação do PIB per capita nos municípios acreanos. Diante disso, a análise do impacto causado pela presença de unidades empresariais, pela pecuária e pela produção agrícola sobre o PIB per capita dos municípios possibilita uma visão da própria economia do estado. A teoria da externalidade é utilizada para referenciar esta pesquisa. Analiticamente, é utilizada a análise... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Estrutura empresarial; Pecuária; Agricultura; Estado do Acre e PIB per capita; Business Structure; Livestock; Agriculture; State of Acre and GDP per capita; Agribusiness. |
Ano: 2008 |
URL: http://purl.umn.edu/108917 |
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Taheripour, Farzad; Hertel, Thomas W.; Tyner, Wallace E.. |
In this paper, we offer a general equilibrium analysis of the impacts of US and EU biofuel mandates for the global livestock sector. Our simulation boosts biofuel production in the US and EU from 2006 levels to mandated 2015 levels. We show that mandates will encourage crop production in both biofuel and non biofuel producing regions, while reducing livestock and livestock production in most regions of the world. The non-ruminant industry curtails its production more than other livestock industries. The numerical results suggest that the biofuel mandates reduce food production in most regions while they increase crude vegetable oils in almost all regions. Implementing biofuel mandates in the US and EU will increase croplands within the biofuel and... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Biofuels; Livestock; Feed Ration; Biofuel Co-Product; Land Use; Livestock Production/Industries. |
Ano: 2009 |
URL: http://purl.umn.edu/49330 |
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Tanveer,A.; Khaliq,A.; Javaid,M.M.; Chaudhry,M.N.; Awan,I.. |
The genus Euphorbia comprises about 2000 species ranging from annuals to trees, including C3, C4, and CAM species. Euphorbia species widely studied in agriculture includes E. antiquorum, E. carollata, E. dentata, E. dracunculoides, E. esula, E. geniculata, E. granulata, E. helioscopia, E. heterophylla, E. hierosolymitana, E. hirta, E. maculata, E. microphylla, E. nerifolia, E. piluifera, E. pulcherrima, E. royleana, E. supine, and E. thiamifolia. These species have been reported mainly in field crops/vegetables, orchards, pastures, and rangelands. Euphorbia plants may present allelopathic effect over desirable cereals, pulses, oilseeds, vegetables, forage plants, and nitrifying bacteria, posing a serious threat to livestock production on open range lands... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Competition; Allelopathy; Crops; Pastures; Livestock; Plant protection. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300024 |
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Hernández Zarco, Alfonso. |
La actividad pecuaria es de gran importancia socioeconómica para el país; la ganadería, en específico la producción de carne, es la actividad más diseminada en el sector rural. Se estima que la superficie aprovechada por la ganadería es superior a 110 millones de hectáreas, aproximadamente 60% del terrritorio nacional (SAGARPA, 2000). En el presente trabajo se estiman los efectos que se tiene sobre las cantidades ofrecidas de carne de res a nivel de granja ante un incremento en el precio del maíz, sorgo y pan. Los incrementos utilizados sobre los precios de los granos fueron del 5%, 10% y 15%, estos son ingredientes básicos en la dieta de bovinos. De igual manera, se realizo un cuestionario verbal con engordadores de Coatlinchan Texcoco edo. de México... |
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Palavras-chave: Ganadería; Superficie; Precio; Cantidad; Elasticidad; Incremento; Livestock; Area; Price; Quantity; Elasticity; Increase; Economía; Maestría. |
Ano: 2013 |
URL: http://hdl.handle.net/10521/1858 |
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Matter,Letícia B.; Spricigo,Denis A.; Tasca,Caiane; de Vargas,Agueda C.. |
The invasin gimB (genetic island associated with human newborn meningitis) is usually found in ExPEC (Extraintestinal Pathogenic Escherichia coli) such as UPEC (uropathogenic E. coli), NMEC (neonatal meningitis E. coli) and APEC (avian pathogenic E. coli). In NMEC, gimB is associated with the invasion process of the host cells. Due to the importance of E. coli as a zoonotic agent and the scarce information about the frequency of gimB-carrying strains in different animal species, the aim of this study was to investigate the presence of gimB in isolates from bovine, swine, canine and feline clinical samples. PCR was conducted on 196 isolates and the identity of the amplicons was confirmed by sequencing. Of the samples tested, only E. coli SB278/94 from a... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: GimB; Adherence; Invasiveness; Zoonotic potential; Livestock; Companion animals. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300875 |
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Zhao, Zishun; Wahl, Thomas I.; Marsh, Thomas L.. |
A conceptual bio-economic framework that integrates dynamic epidemiologicaleconomic processes was designed to analyze the effects of invasive species introduction on decision-making in a livestock sector (e.g., production and feeding). The framework integrates an epidemiological model, a dynamic livestock production model, domestic consumption, and international trade. The integrated approach captures producer and consumer responses to, and welfare outcomes of, livestock disease outbreaks, as well as alternative invasive species management policies. Scenarios of foot-and-mouth disease are simulated to demonstrate the usefulness of the framework in facilitating invasive species policy design. |
Tipo: Conference Paper or Presentation |
Palavras-chave: Bio-economics; Livestock; Invasive species; Foot-and-mouth disease; Beef cattle production; Livestock Production/Industries. |
Ano: 2006 |
URL: http://purl.umn.edu/25490 |
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Puskur, Ranjitha. |
Watershed Development Programmes (WDPs) in India were conceived as tools for correcting the regional imbalances in agricultural development created by Green Revolution, through investments in soil and water conservation (SWC) and natural resource management (NRM) in rainfed areas. Though the overall impact of WDPs has been positive and significant, with increase in physical and economic access to groundwater, landless and marginal households hardly benefited from watershed development. Recent evidence points out that in many watersheds inequities increased, since for non-land owning and -well owning households access to drinking water, grazing lands and other natural resources decreased. This paper is based on a research project carried out by the... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Watersheds; Livestock; Environment; Livelihoods; Markets; Services; Livestock Production/Industries; O13; Q56; Z13. |
Ano: 2006 |
URL: http://purl.umn.edu/25724 |
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Turner, Robin L.. |
This paper analyzes the political economy of the livestock sector in two Indian states, Andhra Pradesh and Orissa. The aim is to identify politically feasible interventions that could have broad positive effects on poor rural livestock producers in these states. To that end, the paper assesses the relationship between land, livestock, and poverty, describes the organization of the sector, and analyzes the political and bureaucratic interests shaping livestock policy. The study used the key informant method supplemented with official documents, newspaper sources and recently published research on the livestock sector. Interviews helped reveal policymakers' concerns, whereas field trips allowed the researcher to talk to a farmers and learn their... |
Tipo: Working or Discussion Paper |
Palavras-chave: India; Orissa; Andhra Pradesh; Policymaking; Livestock; Rural development; Poverty; Livestock Production/Industries. |
Ano: 2004 |
URL: http://purl.umn.edu/23781 |
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Registros recuperados: 202 | |
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