Author: Joel Martin LevinePublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 570
Book Description
Computer Simulation of Beef Cattle Production Systems in the Llanos of Colombia
Author: Joel Martin LevinePublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 570
Book Description
Computer Simulation of Beef Cattle Production Systems in the Llanos of Columbia
Author: Joel Martin LevinePublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 570
Book Description
A simulation model capable of execution on a programmable calculator was developed to study voluntary intake, liveweight change, and fertility of grade Zebu cows in the Llanos of Colombia. Organic nitrogen in the diet and meta bolic weight were used to predict intake; age, liveweight, and energy concentration were the driving variables for the maintenance prediction equation. Energy concentration was calculated as a function of crude protein and digestible organic matter, and liveweight change was predicted as a function of intake, maintenance, liveweight, and energy concentration. Multiplicative correction factors were fitted from data obtained from cow-calf experiments to adjust intake and maintenance for the effects of burning the native savanna, compensatory gain, mineral deficiency, and lactation and gestation. The correction factors were .89 for intake after burning the native savanna, 1.05 and .95 for intake and maintenance during compensatory gain, and .90 for reduced intake due to mineral deficiency. Correction factors for physiological status were 1.20 for intake during early and late lactation, and 1.40, 1.32, and 1.05 for maintenance during early lactation, late lactation, and late gestation, respectively. The correction factors for burning and compensatory gain were fitted against data from dry cows of Herds 4-5 of the Herd Systems Experiment (HSE) and yielded a Pearsonian correlation coefficient of .95 (p
Simulation Of Beef Cattle Production Systems And Its Use In Economic Analysis
Author: Thomas H SpreenPublisher: CRC Press
ISBN: 1000239616
Category : Science
Languages : en
Pages : 269
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.
A Computer Model Simulating Extensive Beef Cattle Production Systems
Author: Publisher:
ISBN: 9780642941817
Category : Beef cattle
Languages : en
Pages : 80
Book Description
A Simulation Analysis of Policies for the Northern Columbia Beef Cattle Industry
Author: Alvaro PosadaPublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 456
Book Description
Revista Mundial de Zootecnia
Author: A Simulation Analysis of Policies for the Northern Colombia Beef Cattle Industry
Author: Alvaro Posada-BorreraPublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 866
Book Description
World Animal Review
Author: Publisher:
ISBN:
Category : Animal industry
Languages : en
Pages : 422
Book Description
A quarterly journal devoted to world developments in animal production, animal health and animal products.
The Economics Of Livestock Systems In Developing Countries
Author: James R SimpsonPublisher: CRC Press
ISBN: 100031622X
Category : Science
Languages : en
Pages : 298
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.
Alternative Beef Production Systems for the Eastern Plains of Colombia
Author: Charles H. MullenaxPublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 36
Book Description