|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Corte. |
|
Data corrente: |
21/07/2005 |
|
Data da última atualização: |
09/04/2020 |
|
Autoria: |
COSTA, F. P.; REHMAN, T. |
|
Afiliação: |
Embrapa Gado de Corte (Campo Grande, MS). |
|
Título: |
Unravelling the rationale of 'overgrazing' and stocking rates in the beef production systems of Central Brazil using a bi-criteria compromise programming model. |
|
Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
Agricultural Systems, Kidlington, v. 83, n. 3, p. 277-295, Mar. 2005. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In Central Brazil, the long-term sustainability of beef cattle systems is under threat over vast tracts of farming areas, as more than half of the 50 million hectares of sown pastures are suffering from degradation. Overgrazing practised to maintain high stocking rates is regarded as one of the main causes. High stocking rates are deliberate and crucial decisions taken by the farmers, which appear paradoxical, even irrational given the state of knowledge regarding the consequences of overgrazing. The phenomenon however appears inextricably linked with the objectives that farmers hold. In this research those objectives were elicited first and from their ranking two, ?asset value of cattle (representing cattle ownership)' and ?present value of economic returns', were chosen to develop an original bi-criteria Compromise Programming model to test various hypotheses postulated to explain the overgrazing behaviour. As part of the model a pasture productivity index is derived to estimate the pasture recovery cost. Different scenarios based on farmers' attitudes towards overgrazing, pasture costs and capital availability were analysed. The results of the model runs show that benefits from holding more cattle can outweigh the increased pasture recovery and maintenance costs. This result undermines the hypothesis that farmers practise overgrazing because they are unaware or uncaring about overgrazing costs. An appropriate approach to the problem of pasture degradation requires information on the economics, and its interplay with farmers' objectives, for a wide range of pasture recovery and maintenance methods. Seen within the context of farmers' objectives, some level of overgrazing appears rational. Advocacy of the simple ?no overgrazing' rule is an insufficient strategy to maintain the long-term sustainability of the beef production systems in Central Brazil. MenosIn Central Brazil, the long-term sustainability of beef cattle systems is under threat over vast tracts of farming areas, as more than half of the 50 million hectares of sown pastures are suffering from degradation. Overgrazing practised to maintain high stocking rates is regarded as one of the main causes. High stocking rates are deliberate and crucial decisions taken by the farmers, which appear paradoxical, even irrational given the state of knowledge regarding the consequences of overgrazing. The phenomenon however appears inextricably linked with the objectives that farmers hold. In this research those objectives were elicited first and from their ranking two, ?asset value of cattle (representing cattle ownership)' and ?present value of economic returns', were chosen to develop an original bi-criteria Compromise Programming model to test various hypotheses postulated to explain the overgrazing behaviour. As part of the model a pasture productivity index is derived to estimate the pasture recovery cost. Different scenarios based on farmers' attitudes towards overgrazing, pasture costs and capital availability were analysed. The results of the model runs show that benefits from holding more cattle can outweigh the increased pasture recovery and maintenance costs. This result undermines the hypothesis that farmers practise overgrazing because they are unaware or uncaring about overgrazing costs. An appropriate approach to the problem of pasture degradation requires informa... Mostrar Tudo |
|
Palavras-Chave: |
Bovino de corte; Brasil Central; Brazilian savannas; Central Brazil; Degradação; Fazendeiro; Husbandry; Modelo; Stocking density; Sustainability; Sustentabilidade. |
|
Thesagro: |
Cerrado; Deterioração; Pastagem; Pecuária; Taxa de Lotação. |
|
Thesaurus Nal: |
beef cattle; degradation; farmers; models; pastures. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02984naa a2200385 a 4500
001 1325787
005 2020-04-09
008 2005 bl uuuu u00u1 u #d
100 1 $aCOSTA, F. P.
245 $aUnravelling the rationale of 'overgrazing' and stocking rates in the beef production systems of Central Brazil using a bi-criteria compromise programming model.$h[electronic resource]
260 $c2005
520 $aIn Central Brazil, the long-term sustainability of beef cattle systems is under threat over vast tracts of farming areas, as more than half of the 50 million hectares of sown pastures are suffering from degradation. Overgrazing practised to maintain high stocking rates is regarded as one of the main causes. High stocking rates are deliberate and crucial decisions taken by the farmers, which appear paradoxical, even irrational given the state of knowledge regarding the consequences of overgrazing. The phenomenon however appears inextricably linked with the objectives that farmers hold. In this research those objectives were elicited first and from their ranking two, ?asset value of cattle (representing cattle ownership)' and ?present value of economic returns', were chosen to develop an original bi-criteria Compromise Programming model to test various hypotheses postulated to explain the overgrazing behaviour. As part of the model a pasture productivity index is derived to estimate the pasture recovery cost. Different scenarios based on farmers' attitudes towards overgrazing, pasture costs and capital availability were analysed. The results of the model runs show that benefits from holding more cattle can outweigh the increased pasture recovery and maintenance costs. This result undermines the hypothesis that farmers practise overgrazing because they are unaware or uncaring about overgrazing costs. An appropriate approach to the problem of pasture degradation requires information on the economics, and its interplay with farmers' objectives, for a wide range of pasture recovery and maintenance methods. Seen within the context of farmers' objectives, some level of overgrazing appears rational. Advocacy of the simple ?no overgrazing' rule is an insufficient strategy to maintain the long-term sustainability of the beef production systems in Central Brazil.
650 $abeef cattle
650 $adegradation
650 $afarmers
650 $amodels
650 $apastures
650 $aCerrado
650 $aDeterioração
650 $aPastagem
650 $aPecuária
650 $aTaxa de Lotação
653 $aBovino de corte
653 $aBrasil Central
653 $aBrazilian savannas
653 $aCentral Brazil
653 $aDegradação
653 $aFazendeiro
653 $aHusbandry
653 $aModelo
653 $aStocking density
653 $aSustainability
653 $aSustentabilidade
700 1 $aREHMAN, T.
773 $tAgricultural Systems, Kidlington$gv. 83, n. 3, p. 277-295, Mar. 2005.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
