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| Registros recuperados: 29 | |
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| Spilki,Fernando Rosado; Luz,Roger Bordin da; Fabres,Rafael Bandeira; Soliman,Mayra Cristina; Kluge,Mariana; Fleck,Juliane Deise; Rodrigues,Manoela Tressoldi; Comerlato,Juliana; Cenci,Alexander; Cerva,Cristine; Dasso,Maurício Gautério; Roehe,Paulo Michel. |
| Viral gastroenteritis and other waterborne diseases are a major concern for health in Brazil. A number of studies were conducted about the presence of viruses on water samples from Brazilian areas. However, the knowledge about the occurrence of viral contamination of drinking water sources in rural settings of the country is insufficient. On the present work, 15 samples from 5 dairy farms located at the municipality of Tenente Portela were collected and analysed for the presence of human adenoviruses (HAdV), as well as human enteroviruses (EV) and rotaviruses (RV). HAdV was present on 66.66% of the water samples, and have been found in all samples from artesian wells and springs, which are used as sources of drinking water for the individuals inhabiting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human adenovirus; Water quality; Dairy farms. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300046 |
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| This paper develops a meta-regression analysis to explain the variation of mean technical efficiency (PETP) measurements from a total of 65 frontier studies that report technical efficiency (ET) measurements at the dairy farm level in the literature published in English and Spanish. The analysis includes the effect of methodology on ET measurements, as well as the effect of the econometric procedure on the meta-regression estimates. Eight models were estimated, and two of these were selected: a fixed effects specification with dummy variables for the most significant studies without geographical effects (EFS), and a specification where the multiple observations are averaged and geographical effects included (OP). Based on model performance, the EFS option... |
| Tipo: Journal article |
Palavras-chave: Meta-regression; Frontier models; Technical efficiency; Dairy farms. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200011 |
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| Bravo-Ureta,Boris E; Moreira,Víctor H; Arzubi,Amilcar A; Schilder,Ernesto D; Álvarez,Jorge; Molina,Carlos. |
| The progressive liberalization of agricultural markets, along with the threat that imported products can pose to local producers, reveals the importance of productivity growth as a mechanism to improve competitiveness. Technical efficiency measurement is the most studied component of productivity because it can help to generate valuable information for policy formulation and farm level decisions focused on the improvement of farm performance. This study uses unbalanced panel data sets for dairy farms from Argentina, Chile and Uruguay, to estimate stochastic production frontier models. These frontiers are then used to estimate economies of size, technological change and technical efficiency. All estimations are based on the Battese and Coelli (1992) model,... |
| Tipo: Journal article |
Palavras-chave: Stochastic frontiers; Dairy farms; Argentina; Chile; Uruguay. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000400006 |
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| Ramos,Marcelo C.; Barbosa,Jackson A.. |
| ABSTRACT The ascendancy of milk production in Brazil is due to mainly to the adoption of confinement systems, however, construction quality of these systems impact on milk production. This study aimed to simulate the Basic Unit Cost (BUC m-2), referring to a free-stall design with capacity for 80 animals and different construction techniques, with a database for various budget analysis and investment plans. A budgetary spreadsheet was modeled, allowing simulating the BUC m-2 for different combinations of roof pillars (metallic, wood or reinforced concrete), covering structure (metallic or wood), coverage model (with or without ridge vent), roof tiles (aluminum, cement or ceramic) and masonry (concrete block, ceramic or solid brick). The techniques used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cost breakdown; Construction techniques; Dairy farms; Milk production; Rural buildings. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000600972 |
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| Rahelizatovo, Noro C.; Gillespie, Jeffrey M.. |
| As with most agricultural industries, the U.S. dairy industry has evolved into a structure including fewer yet larger firms. In Louisiana, total milk production has declined along with dairy farm numbers since 1972. This study addresses the impact of alternative policies, macroeconomic factors, and technology on the structure of the Louisiana dairy industry using a micro-data non-stationary Markov chain analysis. Results indicate that a number of factors have affected the structure of the industry in Louisiana, including but not limited to prices, milk supply reduction programs, technology and interest rates. |
| Tipo: Journal Article |
Palavras-chave: Dairy farms; Markov chain analysis; Seemingly unrelated regression; Marketing. |
| Ano: 1999 |
URL: http://purl.umn.edu/15372 |
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| Mkhabela, Thulasizwe S.; Piesse, Jenifer; Thirtle, Colin G.; Vink, Nick. |
| This paper models dairy farms in KwaZulu-Natal, South Africa, emphasising the complexities unique to this multi-product industry. Net and gross output approaches to measuring production are discussed and then tested using panel data from 37 dairy farms in KwaZulu-Natal from 1999 and 2007. Production functions for the three outputs: milk production, animals and farm-produced feed, are fitted as a simultaneous system to model the farms’ production activities. This simultaneous model is complemented by a single equation reduced form that is fitted as a frontier, which allows estimation of the relative efficiencies of the individual farms. The results show that, with data this detailed, it is possible to refine the model until it fits very tightly. Indeed, in... |
| Tipo: Journal Article |
Palavras-chave: Dairy farms; Production; Frontiers; Efficiency; Production Economics. |
| Ano: 2010 |
URL: http://purl.umn.edu/61999 |
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| Ortner, Karl M.. |
| Pure Technical Efficiency scores of Austrian dairy farms are estimated econometrically on the basis of data envelopment analysis and bootstrapping. In a second stage, using the same assumptions on the distribution of error terms, the distances of farms to their production possibility curve are estimated as functions of farm attributes. Since some of these attributes refer to natural conditions which are more or less unfavourable, the farms in the sample are facing individual frontiers. The distinction between sectorial and individual frontiers gives rise to a distinction between “overall” and “firm-level” efficiency. Using overall efficiency for the calculation of possible savings from a move to the frontier will overestimate these savings and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: DEA; Efficiency; Dairy farms; Farm Management; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44371 |
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| Zimmermann, Andrea; Heckelei, Thomas. |
| Previous analyses of dairy farm structural change focused on the variation over time in one or a small number of regions. Here we present an EU15-wide analysis of the change of the number of farms in different size classes. The purpose is (1) to identify the differences in regional development patterns and (2) to measure the explanatory relevance and effect of key factors suggested in the literature. Apart from the unprecedented scope, the underlying Markov chain analysis also contributes by combining observed transitions in micro data with macro data on farm numbers. Results show widely significant impacts of most explanatory variables, but also reveal the complexity of the underlying processes. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Structural change; Dairy farms; Markov chain; Cross-regional; EU; Agricultural and Food Policy. |
| Ano: 2010 |
URL: http://purl.umn.edu/61006 |
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| Fogarasi, Jozsef; Latruffe, Laure. |
| The paper investigates the difference in technical efficiency and potential technology gap between French and Hungarian dairy farms during 2001-2006, using Data Envelopment Analysis under each country’s respective frontier and under a common frontier (metafrontier). Results indicate that French farms have a more optimal scale of production than Hungarian farms, but Hungarian farms make better use of the technology. They also have a more productive technology than French farms. The latter finding is obtained under the assumption of a hypothetical common frontier. Although French and Hungarian farmers do not have access to the same technologies and the metafrontier is still hypothetical, our paper adds to the thin literature that compares two countries in... |
| Tipo: Journal Article |
Palavras-chave: Technical efficiency; Technology gap; Dairy farms; France; Hungary; Productivity Analysis. |
| Ano: 2009 |
URL: http://purl.umn.edu/52201 |
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| Registros recuperados: 29 | |
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