› › Cattle Herd Dynamics An Integer And Stochastic Model For Evaluating Production Alternatives




Modelling of Extensive Livestock Production Systems

Author : N. de Ridder

Publisher : ILRI (aka ILCA and ILRAD)

Page : 366 pages

File Size : 38,42 MB

Release : 1986-01-01

Category :

ISBN :

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Book Description

ILCA's policy towards modelling in the framework of livestock systems research; models and the analysis of productivity in extensive livestock systems in Israel; prediction of actual primary production under nitrogen limitation; behavioural aspects of intake at pasture in ruminats; prediction of feed intake in ruminats; relationships between chemical composition and voluntary intake of feeds by sheep and cattle; the effect of breeding season duration on production and feed consumption in grazing beef cattle in the south of Israel; adaptation of the Kahan model for a mixed farming system in southeastern Asia; appraisal of the ILCA cattle herd dynamics model using data from pastoral systems in mali and kenya; moddeling pastoral livestock production: problems and prospect; analysis of management impact in semi-arid agropastoral systems; modelling economic outcomes of livestock production systems; selection of sheep husbandy techologies under single and multiple goal constraints; types, purposes and users of models; problems related do intake.





Livestock Production in Central Mali

Author : R. T. Wilson

Publisher : ILRI (aka ILCA and ILRAD)

Page : 132 pages

File Size : 35,91 MB

Release : 1986-01-01

Category : Cattle

ISBN : 9789290530817

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Book Description

ILCA has been conducting a long-term study on livestock production in central Mali since the beginning of 1976. This report presents results based on data collected over a 6-year period from 1978 to mid-1984. In part I the livestock production systems in the zone, management practices and herd and flock demography are described. Cattle and small ruminant productivity is discussed in detail in parts II and III and recommendations based on the results of the studies are given in part IV.





The Economics Of Livestock Systems In Developing Countries

Author : James R Simpson

Publisher : CRC Press

Page : 324 pages

File Size : 12,71 MB

Release : 2019-09-06

Category : Science

ISBN : 100031622X

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Book Description

Improvement of the world's livestock industry necessitates input from many directions. Planning by a host of national and international agencies is required in order to provide optimal stimulus in very diverse areas ranging from formulation of laws and incentives that stimulate competition yet prevent undue competition, to the optimal provision of credit. Planning is needed to carry out a complex array of interrelated research. The purpose of this book is specifically tasked with setting forth frameworks and methods for evaluation of investments and associated economic decision-making in the livestock industries of developing countries. Economists will find this book useful because it synthesizes .much material into a cohesive whole--material that is often presented in a cursory manner or overlooked as emphasis has shifted to sophisticated quantitative techniques.



Systems Theory Applied to Agriculture and the Food Chain

Author : J.G.W. Jones

Publisher : Springer Science & Business Media

Page : 394 pages

File Size : 14,73 MB

Release : 1990-09-30

Category : Technology & Engineering

ISBN : 9781851665105

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Book Description

Biological and physiological systems: animal sciences. Plant-animal interactions in northern temperate sown grasslands and semi-natural vegetation. Exploitation of the systems approach in technical design of agricultural enterprises. Application of systems theory to farm planning and control: modelling resource allocation. Optimising the mixture of enterprises in a farming system. Farming systems research-extension. Food policy and food security planning: institutional approaches to modelling grain markets and food security in Sub-Saharn Africa. A systems view of commercial supply and marketing links. Agroecosystems. Understanding and managing changes in agriculture. Agricultural sector modelling for policy development. Of agricultural systems and systems agriculture: systems methodologies in agricultural education. Extension education: Top(s) Down, Bottom(s) Up and Other Things.



Simulation Of Beef Cattle Production Systems And Its Use In Economic Analysis

Author : Thomas H Spreen

Publisher : CRC Press

Page : 269 pages

File Size : 12,9 MB

Release : 2019-07-11

Category : Science

ISBN : 1000239616

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Book Description

Economic analysis of beef cattle production has been limited by the inability to fully describe the underlying production process. Except for confined feeding of cattle, beef cattle production is the process of growing cattle who consume forages. The animal and the forage possess attributes of both factors and products of production. The production of forage constitutes one production process, animal growth is another production process, and reproduction by female animals is a third production process. Cattle production involves all three processes in such a manner that each influences the outcome of the other. Each process is itself complex and analysis is further complicated when all three are considered simultaneously.