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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/10/1996 |
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Data da última atualização: |
18/10/1996 |
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Autoria: |
NICHOLSON, C. F. |
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Título: |
An optimization model of dual purpose cattle production in the humid lowlands of Venezuela. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
[Ithaca, NY]: Cornell University, 1990. |
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Páginas: |
340p. |
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Descrição Física: |
1 v. em 2 pt. |
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Idioma: |
Inglês |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
Climatic, nutritional, and economic constraints in the tropical ecozones of Latin America severely restrict the efficiency of specialized, intensive production of milk and beef. Dual purpose (milk and beef) cattle production systems thus have become important components of the livestock sectors of many Latin American countries. Despite their significant contribution to regional supplies of milk and beef, few studies have examined resource allocation strategies for dual purpose farms. The primary objective of this study is to examine nutritional management decisions on dual purpose farms. A multi-period linear programming (LP) model of a representative dual purpose farm in western Venezuela is developed based on the survey data of holmann (1989) and othersecondary sources. The model was used to examine constraints on dual purpose production, to evaluate alternative strategies of nutritional management, to assess the impacts of limited resources, and to analyze optimal responses to price changes resulting from government policy. The LP model selects the combination of animal inventory, forage production, feed purchases, and animal sales activities to maximize discounted net margin (total revenues less variable costs). The combination of activities is selected subject to constraints on farm resources, herd composition, and the nutritional requirements of each class of animals. The LP model represents a three-year cow replacement cycle in six periods to account for seasonal variation in forage quality and .... MenosClimatic, nutritional, and economic constraints in the tropical ecozones of Latin America severely restrict the efficiency of specialized, intensive production of milk and beef. Dual purpose (milk and beef) cattle production systems thus have become important components of the livestock sectors of many Latin American countries. Despite their significant contribution to regional supplies of milk and beef, few studies have examined resource allocation strategies for dual purpose farms. The primary objective of this study is to examine nutritional management decisions on dual purpose farms. A multi-period linear programming (LP) model of a representative dual purpose farm in western Venezuela is developed based on the survey data of holmann (1989) and othersecondary sources. The model was used to examine constraints on dual purpose production, to evaluate alternative strategies of nutritional management, to assess the impacts of limited resources, and to analyze optimal responses to price changes resulting from government policy. The LP model selects the combination of animal inventory, forage production, feed purchases, and animal sales activities to maximize discounted net margin (total revenues less variable costs). The combination of activities is selected subject to constraints on farm resources, herd composition, and the nutritional requirements of each class of animals. The LP model represents a three-year cow replacement cycle in six periods to account for seasonal vari... Mostrar Tudo |
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Palavras-Chave: |
Dual purpose; Modelo; Optimization methods; Pecuaria de duplo proposito. |
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Thesagro: |
Bovino; Sistema de Produção. |
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Thesaurus Nal: |
animal production; beef cattle; cattle; dairy cattle; meat production; milk production; models; Venezuela. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02355nam a2200301 a 4500
001 1556477
005 1996-10-18
008 1990 bl uuuu m 00u1 u #d
100 1 $aNICHOLSON, C. F.
245 $aAn optimization model of dual purpose cattle production in the humid lowlands of Venezuela.
260 $a[Ithaca, NY]: Cornell University$c1990
300 $a340p.$c1 v. em 2 pt.
500 $aTese Mestrado.
520 $aClimatic, nutritional, and economic constraints in the tropical ecozones of Latin America severely restrict the efficiency of specialized, intensive production of milk and beef. Dual purpose (milk and beef) cattle production systems thus have become important components of the livestock sectors of many Latin American countries. Despite their significant contribution to regional supplies of milk and beef, few studies have examined resource allocation strategies for dual purpose farms. The primary objective of this study is to examine nutritional management decisions on dual purpose farms. A multi-period linear programming (LP) model of a representative dual purpose farm in western Venezuela is developed based on the survey data of holmann (1989) and othersecondary sources. The model was used to examine constraints on dual purpose production, to evaluate alternative strategies of nutritional management, to assess the impacts of limited resources, and to analyze optimal responses to price changes resulting from government policy. The LP model selects the combination of animal inventory, forage production, feed purchases, and animal sales activities to maximize discounted net margin (total revenues less variable costs). The combination of activities is selected subject to constraints on farm resources, herd composition, and the nutritional requirements of each class of animals. The LP model represents a three-year cow replacement cycle in six periods to account for seasonal variation in forage quality and ....
650 $aanimal production
650 $abeef cattle
650 $acattle
650 $adairy cattle
650 $ameat production
650 $amilk production
650 $amodels
650 $aVenezuela
650 $aBovino
650 $aSistema de Produção
653 $aDual purpose
653 $aModelo
653 $aOptimization methods
653 $aPecuaria de duplo proposito
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