Download or read book An Interactive Computer Simulation of Dairy Farm Systems as a Method for Making Energy Management Decisions written by Ernest James Hewett and published by . This book was released on 1983 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Simulation Technique for Making Management Decisions in Dairy Farming written by Robert F. Hutton and published by . This book was released on 1966 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1983 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Mathematical Modeling Techniques for Optimized Dairy Herd Management and Decision Making written by Afshin Samia Kalantari and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dairy farm is a complex business enterprise with several uncertain and interacting factors (e.g., biology, environment, market conditions). To become and remain viable in such environment, dairy farm decision makers need to make better-informed decisions. Appreciation of these facts has resulted in extensive on-farm data gathering. However, to obtain useful information for decision-making, data need to be processed. For this purpose, mathematical modeling techniques can be used to develop decision support systems. This thesis applies different mathematical modeling methods- dynamic programming, Markov chain, and Monte Carlo- to evaluate and quantify the economic impact of optimal replacement decisions, reproductive management, and nutritional grouping on dairy herd's profitability. Some of these models were also transformed into decision support systems that can further assist decision-making at the farm level. Dynamic programming optimization and Markov chain simulation were compared to find the optimal replacement decisions in dairy cows. The results showed that although dynamic programming remains the best algorithm for replacement decisions, the simulation method had comparable results. The effect of reproductive management on the herd value was quantified by integrating daily dynamic programming and Markov chain models. The results showed that there is an economic opportunity to differentiate reproductive management strategies according to cows' relative milk productivity. Also, a robust Markov chain was introduced and used for stochastic evaluation of reproductive performance. The study confirmed greater profitability with increased reproductive performance, but a great variation among farms at a given level of reproductive performance was also observed. Finally, a dynamic, finite, stochastic Monte Carlo simulation was developed and used to evaluate the economic impact of nutritional grouping of lactating cows. The results indicated that there was an economic opportunity when grouping homogeneous cows based on both their protein and energy concentration requirements. Regardless of herd size, a maximum relative gain could be achieved by having three nutritional groups beyond the fresh cow group.

Download or read book Digitizing Production Systems written by Numan M. Durakbasa and published by Springer Nature. This book was released on 2021-11-10 with total page 893 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected papers from International Symposium for Production Research 2021, held on October 7–9, 2021, online, Turkey. The book reports recent advances in production engineering and operations. It explores topics including production research; production management; operations management; industry 4.0; industrial engineering; mechanical engineering; engineering management; and operational research. Presenting real-life applications, case studies, and mathematical models, this book is of interest to researchers, academics, and practitioners in the field of production and operation engineering. It provides both the results of recent research and practical solutions to real-world problems.

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Mathematical Modeling Techniques for Optimized Dairy Herd Management and Decision Making written by Afshin Samia Kalantari and published by . This book was released on 2015 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dairy farm is a complex business enterprise with several uncertain and interacting factors (e.g., biology, environment, market conditions). To become and remain viable in such environment, dairy farm decision makers need to make better-informed decisions. Appreciation of these facts has resulted in extensive on-farm data gathering. However, to obtain useful information for decision-making, data need to be processed. For this purpose, mathematical modeling techniques can be used to develop decision support systems. This thesis applies different mathematical modeling methods- dynamic programming, Markov chain, and Monte Carlo- to evaluate and quantify the economic impact of optimal replacement decisions, reproductive management, and nutritional grouping on dairy herd's profitability. Some of these models were also transformed into decision support systems that can further assist decision-making at the farm level. Dynamic programming optimization and Markov chain simulation were compared to find the optimal replacement decisions in dairy cows. The results showed that although dynamic programming remains the best algorithm for replacement decisions, the simulation method had comparable results. The effect of reproductive management on the herd value was quantified by integrating daily dynamic programming and Markov chain models. The results showed that there is an economic opportunity to differentiate reproductive management strategies according to cows' relative milk productivity. Also, a robust Markov chain was introduced and used for stochastic evaluation of reproductive performance. The study confirmed greater profitability with increased reproductive performance, but a great variation among farms at a given level of reproductive performance was also observed. Finally, a dynamic, finite, stochastic Monte Carlo simulation was developed and used to evaluate the economic impact of nutritional grouping of lactating cows. The results indicated that there was an economic opportunity when grouping homogeneous cows based on both their protein and energy concentration requirements. Regardless of herd size, a maximum relative gain could be achieved by having three nutritional groups beyond the fresh cow group.

Download or read book Agricultural Engineers Yearbook written by American Society of Agricultural Engineers and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1975 with total page 1922 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Integrated Dairy Farm System in New York written by and published by . This book was released on 1985 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Integrated Dairy Farm System in Georgia written by James Leo Walsh and published by . This book was released on 1986 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use in the United States written by Bernard G. Brown and published by . This book was released on 1965 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Simulation Technique for Making Management Decision in Dairy Farming written by Robert F. Hutton and published by . This book was released on 1966 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavioral and Systems Dynamics Simulation Models written by Thomas Hebert and published by . This book was released on 1988 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Computer Information Systems on Dairy Farm Management written by Eduardo Jofre-Giraudo and published by . This book was released on 1988 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Dairy Herd Performance for a Whole Farm System Simulation Model written by Manfei Li and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dairy farms are complex systems comprised of interrelated components and managed with sophisticated procedures. To achieve production and environmental goals, dairy farm decision-makers need to be better informed on the uncertainty of the dairy farm system. A simulation model of the whole farm system might be useful to virtually test management strategies prior to taking operational actions. The Ruminant Farm System model, RuFaS, is being developed as an open-source and highly flexible probabilistic whole-farm simulation model. This thesis introduces a dynamic and stochastic Monte Carlo simulation model of the animal life cycle as a submodule of RuFaS. This RuFaS submodule is intended to provide an extensible framework for the animal and herd simulations, allowing further improvement and expansion. The animal life-cycle submodule simulates the daily growth, production, reproduction, and culling of individual dairy animals and the dynamics of the herd as a group of animals. Each procedure is informed by established scientific literature and industry standards to represent current farm characteristics. A case study examining the use of sexed and beef semen techniques on dairy farms has been conducted using the submodel. The results indicated that switching from conventional semen to a combination of sexed and beef semen was economically advantageous, as the benefits in milk and calf revenue outweighed the additional expenses of breeding and semen. To obtain more precise production simulation results, we quantified the parameters determining the shape and magnitude of current lactation curves using mixed-effects models on a dataset of over 8 million lactations, each with at least 10 test day recordings. Individual daily targeted milk production estimations for the RuFaS model were to be based on the mixed model projections. Furthermore, the effects of seasonal production changes and long-term trends in milk and milk component productivity were quantified for 17 states with at least 100 thousand lactation records via time-series decomposing and clustering. This time series analysis retrieved trend and seasonality characteristics from state clusters to inform RuFaS estimations of milk and milk component yields.