Author: Robert William BrennanPublisher:
ISBN:
Category :
Languages : en
Pages : 288
Book Description
The Application of Computer Simulation and Mathematical Modeling Techniques in Feedlot Beef Cattle Production and Research
Author: Robert William BrennanPublisher:
ISBN:
Category :
Languages : en
Pages : 288
Book Description
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.
EPA-600/2
Author: Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 700
Book Description
American Doctoral Dissertations
Author: Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 574
Book Description
Beef Cattle Management Systems for the Southeast
Author: Hines Finlayson BoydPublisher:
ISBN:
Category : Beef cattle
Languages : en
Pages : 282
Book Description
Two mathematical models for the evaluation of beef production systems were developed and computerized using DYNAMO programming. The first model, a cow efficiency estimator, computed the TDN requirements for a cow and her calf using variables such as animal weight and gains, seasonal changes in cow weight, cow milk production, physical activity of the animal and the quality of feed being consumed. The second model, a herd efficiency estimator, used data from the first model plus data on cattle prices, fixed cots, pregnancy and calf survival rate, death losses, heifer replacement and cullingpolicies, herd size, and TDN produced per acre from each TDN source. This model calculated biological efficiency factors such as TDN per unit of beef sold, beef produced per land unit ane economic efficiency factors including cost and net returns per unit of beef sold and net returns per land unit. The models were tested using data collected over a nine year period at the University of Florida Beef Research Unit. They were then used to evaluate five feeding and pasture systems suitable to the southeastern United States. Animal production traits, market structures and herd culling procedures were also studied. Cow size had no effect on measures of biological efficiency. In general, cow size had little or no effect on profitability except that large cows were at a disadvantage when a relatively expensive high-energy corn silage ration was fed to brood cows. Increasing milk yield improved biological efficiency, descreased cots, and ...
Research Reporting Series
Author: Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 592
Book Description
Comprehensive Dissertation Index
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 914
Book Description
Livestock and the Environment
Author: M. L. RowePublisher:
ISBN:
Category : Agricultural wastes
Languages : en
Pages : 256
Book Description
Livestock and the Environment
Author: Ralph H. RamseyPublisher:
ISBN:
Category : Animal waste
Languages : en
Pages : 580
Book Description
Author: