Low Cost Feeding Strategies For Dual Purpose Cattle In Venezuela
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Low Cost Feeding Strategies For Dual Purpose Cattle In Venezuela
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Author : Paul Wilfred Townsend
language : en
Publisher:
Release Date : 1989
Low Cost Feeding Strategies For Dual Purpose Cattle In Venezuela written by Paul Wilfred Townsend and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Cattle categories.
Economic Evaluation Of Dairy And Dual Purpose Cattle Production Systems In Venezuela
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Author : Federico Jose Holmann
language : en
Publisher:
Release Date : 1989
Economic Evaluation Of Dairy And Dual Purpose Cattle Production Systems In Venezuela written by Federico Jose Holmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Cattle categories.
Production costs and net margins for straightbred and crossbred holstein herds in Venezuela. Economic return from us holstein artificial insemination sires in holstein herds in Colombia, Mexico, and Venezuela. Comparative economic returns from artificial insemination and natural service in straightbred and crossbred holstein herdes in Venezuela. Net margins predicted from diferent fraction of holstein genes in and upgrading program for venezuela. Conclusions and recommendations. Recommendation. Research needs. References. Appendix 1. Survey A (English and spanish). Appendix 2. Survey B (English and spanish). Appendix 3. Survey C (English and spanish). Appendix 4. Farm and herd, production, and economic characteristics by breed group and ecozone. Appendix 5. Average herd-year standard deviations for nature equivalente milk and percentages of herd-years within herd-year mature equivalent milk mean classes for straightbred holsteins in Colombia, Mexico, Puerto Rico, and Venezuela and for crossbred holsteins in Venezuela. Appendix 6. Net present value (PVS) sire summaries fo US holstein artificial insemination sires available in Colombia, Mexico, and Venezuela in early 1987 for daughter milk response to sire selection of .30 in Colombia and Venezuela and .55 in Mexico with a conception rate of 50% and real interest rate of 7%. Appendix 7. Response from respondent groups to rank multiple trait performance in an upgrading program form a zebu breed to holstein.
Optimal Nutrition Management And Growth Strategies For Dual Purpose Cows In Venezuela And Costa Rica
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Author : Cristina Isabella Urbina
language : en
Publisher:
Release Date : 1991
Optimal Nutrition Management And Growth Strategies For Dual Purpose Cows In Venezuela And Costa Rica written by Cristina Isabella Urbina and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
An Optimization Model Of Dual Purpose Cattle Production In The Humid Lowlands Of Venezuela
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Author : Charles Frederick Nicholson
language : en
Publisher:
Release Date : 1990
An Optimization Model Of Dual Purpose Cattle Production In The Humid Lowlands Of Venezuela written by Charles Frederick Nicholson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Beef industry categories.
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 ...
Technical Efficiency Of The Dual Purpose Cattle System In Venezuela
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Author : Leonardo Ortega
language : en
Publisher:
Release Date : 2002
Technical Efficiency Of The Dual Purpose Cattle System In Venezuela written by Leonardo Ortega and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
ABSTRACT: The dual-purpose cattle system (DPCS) is the traditional cattle production system in the lowland tropics of Latin America where crossbred cattle are used for the production of milk and beef. This system is based on local and low cost inputs, but has been often considered to be inefficient due to its low partial productivity indices when compared with those used in developed countries. Few data exist about the efficiency of this system but the scant literature available is based on partial productivity indices. These indices provide useful information but do not take into account the effect of total inputs on total outputs as a measure of total efficiency. This study attempts to provide standard measurement of the technical efficiency (TE) of this system based on the concept of total factor productivity. An analysis is conducted to estimate the main determinants TE of the DPCS located in Zulia State, Venezuela.
Analysis Of Productivity Nutritional Constraints And Management Options In Beef Cattle Systems Eastern Yucatan Mexico
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Author : Kotaro Baba
language : en
Publisher:
Release Date : 2007
Analysis Of Productivity Nutritional Constraints And Management Options In Beef Cattle Systems Eastern Yucatan Mexico written by Kotaro Baba and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Biological Agricultural Index
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Author :
language : en
Publisher:
Release Date : 1990
Biological Agricultural Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Agriculture categories.
Abstracts On Cassava Manihot Esculenta Crantz
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Author :
language : en
Publisher:
Release Date : 1991
Abstracts On Cassava Manihot Esculenta Crantz written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Cassava categories.
A E Res
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Author :
language : en
Publisher:
Release Date : 1990
A E Res written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Agriculture categories.
Jagrist
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Author :
language : en
Publisher:
Release Date : 1991
Jagrist written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Agriculture categories.