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| Registros recuperados: 48 | |
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| McBride, William D.; Key, Nigel D.; Mathews, Kenneth H., Jr.. |
| Antimicrobial drugs are fed to hogs at sub-therapeutic levels to prevent disease and promote growth. However, there is concern that the presence of antimicrobial drugs in hog feed is a factor promoting the development of antimicrobial drug-resistant bacteria. This study uses a sample-selection model to examine the impact that use has on the productivity of U.S. hog operations. The analysis did not find a relationship between productivity and sub-therapeutic antibiotics fed during finishing, but productivity was significantly improved when fed to nursery pigs. Restrictions on feeding antimicrobial drugs during the nursery phase would likely impose significant economic costs on U.S. hog producers. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Livestock Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/21148 |
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| Shoemaker, Robbin A.; Harwood, Joy L.; Day-Rubenstein, Kelly A.; Dunahay, Terry; Heisey, Paul W.; Hoffman, Linwood A.; Klotz-Ingram, Cassandra; Lin, William W.; Mitchell, Lorraine; McBride, William D.; Fernandez-Cornejo, Jorge. |
| Agricultural biotechnology has been advancing very rapidly, and while it presents many promises, it also poses as many questions. Many dimensions to agricultural biotechnology need to be considered to adequately inform public policy. Policy is made more difficult by the fact that agricultural biotechnology encompasses many policy issues addressed in very different ways. We have identified several key areas agricultural research policy, industry structure, production and marketing, consumer issues, and future world food demand where agricultural biotechnology is dramatically affecting the public policy agenda. This report focuses on the economic aspects of these issues and addresses some current and timely issues as well as longer term issues. |
| Tipo: Report |
Palavras-chave: Biotechnology; Economics; Adoption; Patents; Research policy; Markets; Market segmentation; Identity preservation; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2001 |
URL: http://purl.umn.edu/33735 |
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| Fernandez-Cornejo, Jorge; McBride, William D.. |
| Adoption of genetically engineered crops with traits for pest management has risen dramatically since their commercial introduction in the mid-1990's. The farm-level impacts of such crops on pesticide use, yields, and net returns vary with the crop and technology examined. Adoption of herbicide-tolerant cotton led to significant increase in yields and net returns, but was not associated with significant changes in herbicide use. On the other hand, increase in adoption of herbicide-tolerant soybeans led to small but significant increases in yields, no changes in net returns, and significant decreases in herbicide use. Adoption of Bt cotton in the Southeast significantly increased yields and net returns and significantly reduced insecticide use. |
| Tipo: Report |
Palavras-chave: Biotechnology; Genetic engineering; Pest management; Field crops; Input traits; Crop Production/Industries. |
| Ano: 2000 |
URL: http://purl.umn.edu/33931 |
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| Key, Nigel D.; McBride, William D.. |
| Estimating how the use of production contracts affects farm productivity is difficult when unobservable factors are correlated with both the decision to contract and productivity. To account for potential selection bias, this study uses the local availability of production contracts as an instrument for whether a farm uses a contract in order to estimate the impact of contract use on total factor productivity. Results indicate that use of a production contract is associated with a large increase in productivity for feeder-to-finish hog farms in the United States. The instrumental variable method makes it credible to assert that the observed association is a causal relationship rather than simply a correlation. |
| Tipo: Journal Article |
Palavras-chave: Productivity; Production contracts; Instrumental variables; Sample selection; Productivity Analysis. |
| Ano: 2008 |
URL: http://purl.umn.edu/45659 |
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| MacDonald, James M.; O'Donoghue, Erik J.; McBride, William D.; Nehring, Richard F.; Sandretto, Carmen L.; Mosheim, Roberto. |
| U.S. dairy production is consolidating into fewer but larger farms. This report uses data from several USDA surveys to detail that consolidation and to analyze the financial drivers of consolidation. Specifically, larger farms realize lower production costs. Although small dairy farms realize higher revenue per hundredweight of milk sold, the cost advantages of larger size allow large farms to be profitable, on average, even while most small farms are unable to earn enough to replace their capital. Further survey evidence, as well as the financial data, suggest that consolidation is likely to continue. |
| Tipo: Report |
Palavras-chave: Dairy farming; Economies of scale; Economies of size; Dairy farm structure; Milk costs; Farm Management; Industrial Organization; Livestock Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/6704 |
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| McBride, William D.; Greene, Catherine R.. |
| Declining demand for organic products in response to the economic downturn has slowed the rapid growth in organic milk production. Economic forces, primarily lower production costs, may be pushing organic dairies to be more like conventional dairies in terms of size, location, and the types of technologies used. More specific pasture requirements for organic certification proposed under USDA’s National Organic Program may affect how the organic milk production sector evolves. |
| Tipo: Article |
Palavras-chave: Agribusiness; Livestock Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/122143 |
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| Daberkow, Stan G.; McBride, William D.. |
| During the past few years, nitrogen fertilizer prices and price volatility have increased. Producers of nitrogen-intensive crops, such as corn, who are faced with increased nitrogen prices or price volatility, can adopt either cost-reducing or price variability-reducing strategies. Using a behavioral model in the logit specification and data from a 2001 national survey of U.S. corn producers, we found that the probability of forward pricing nitrogen fertilizer and the probability of using nitrogen more efficiently were linked to operator occupation, farm size, yield goal, and farm location. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2004 |
URL: http://purl.umn.edu/20271 |
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| McBride, William D.; Key, Nigel D.; Mathews, Kenneth H., Jr.. |
| Antimicrobial drugs are fed to hogs at sub-therapeutic levels to prevent disease and promote growth. However, there is concern that the presence of antimicrobial drugs in hog feed is a factor promoting the development of antimicrobial drug-resistant bacteria. This study describes the extent to which antibiotics are used in hog production and how this changed between 2004 and 2009. This study also uses a sample-selection model to examine the impact that use has on the productivity of U.S. hog operations. Using hog producer data from 2004, the analysis did not find a relationship between productivity and sub-therapeutic antibiotics fed during finishing, but productivity was significantly improved when fed to nursery pigs. These results are being evaluated... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Antibiotics; Hogs; Sample selection; Farm Management; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/103232 |
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| Registros recuperados: 48 | |
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