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Agriculture's Terms of Trade: Issues and Implications AgEcon
Colman, David R..
Tipo: Conference Paper or Presentation Palavras-chave: International Relations/Trade; F14; N50; N60; N70; O13; P45; Q17.
Ano: 2009 URL: http://purl.umn.edu/53200
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A Review of the Arts of Supply Response Analysis AgEcon
Colman, David R..
This paper classifies methods for estimating agricultural output supply responses to price into two broad categories (1) programming and (2) econometric. The latter category is further subdivided into two-stage procedures, directly estimated supply systems and directly estimated single commodity models. In Part 1 the theoretical basis of these methods is considered, while Part 2 explores their strengths, weaknesses and potentials from an empirical standpoint.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1983 URL: http://purl.umn.edu/12516
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The Rise and Decline (?) of Agricultural Economics. AgEcon
Colman, David R..
Tipo: Conference Paper or Presentation Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2007 URL: http://purl.umn.edu/8526
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Domestic and International Pressures for European Agricultural Adjustment and Their Implications AgEcon
Colman, David R..
General economic forces acting upon structural change in agriculture dominate the impacts of changes in agricultural policy. Particular factors are: (1) High demand for land for nonagricultural purposes. (2) High demand for residences in rural areas. (3) Demand for leisure space. (4) Changing occupational expectations and a move away from physical labour. Structural adjustment in agriculture is a steady process, driven by the enlargement of commercial farms and by the marginalisation of large numbers of smaller farms whose managers increasingly rely on off farm income and part-time operation. The most heavily commercial sector is becoming less dependent upon traditional support and more heavily influenced by the integrated contracts with downstream...
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural and Food Policy.
Ano: 2004 URL: http://purl.umn.edu/15770
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Gaining from Improved Dairy Cow Nutrition: Economic, environmental and animal health benefits AgEcon
Colman, David R.; Beever, David E..
A majority of UK dairy herds have the potential to increase profitability by improving the ration of their cows. This paper reports that gains averaging around £100 per cow have been made within one year of adopting the Keenan Hi-Fibre ration by 239 UK herds in 2006 and 2007. Larger gains have been made by herds in France. The key performance indicator underlying these gains is Feed Conversion Efficiency, whereby the same, or even a smaller amount of Dry Matter Intake generates higher yields per cow. Importantly, the gains are associated with large improvements in animal health and reductions in greenhouse gases per litre of milk produced.
Tipo: Conference Paper or Presentation Palavras-chave: Feed conversion efficiency; Cattle nutrition; Greenhouse gas emissions; Animal health.; Livestock Production/Industries.
Ano: 2009 URL: http://purl.umn.edu/51424
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