Use of Nonlinear Programming to Optimize Performance Response to Energy Density in Broiler Feed Formulation
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| Xuất bản năm: | Poultry Science vol. 83, no. 2 (Feb 2004), p. 147-151 |
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| Tác giả chính: | |
| Được phát hành: |
Oxford University Press
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| Những chủ đề: | |
| Truy cập trực tuyến: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 100 | 1 | |a Guevara, V R | |
| 245 | 1 | |a Use of Nonlinear Programming to Optimize Performance Response to Energy Density in Broiler Feed Formulation | |
| 260 | |b Oxford University Press |c Feb 2004 | ||
| 513 | |a PERIODICAL | ||
| 520 | 3 | |a A nonlinear programming optimization model was developed to maximize margin over feed cost in broiler feed formulation and is described in this paper. The model identifies the optimal feed mix that maximizes profit margin. Optimum metabolizable energy level and performance were found by using Excel Solver nonlinear programming. Data from an energy density study with broilers were fitted to quadratic equations to express weight gain, feed consumption, and the objective function income over feed cost in terms of energy density. Nutrient:energy ratio constraints were transformed into equivalent linear constraints. National Research Council nutrient requirements and feeding program were used for examining changes in variables. The nonlinear programming feed formulation method was used to illustrate the effects of changes in different variables on the optimum energy density, performance, and profitability and was compared with conventional linear programming. To demonstrate the capabilities of the model, I determined the impact of variation in prices. Prices for broiler, corn, fish meal, and soybean meal were increased and decreased by 25%. Formulations were identical in all other respects. Energy density, margin, and diet cost changed compared with conventional linear programming formulation. This study suggests that nonlinear programming can be more useful than conventional linear programming to optimize performance response to energy density in broiler feed formulation because an energy level does not need to be set. | |
| 650 | 1 | 2 | |a Animal Feed |x economics |
| 650 | 2 | 2 | |a Animal Nutritional Physiological Phenomena |
| 650 | 2 | 2 | |a Animals |
| 650 | 1 | 2 | |a Chickens |x growth & development |
| 650 | 2 | 2 | |a Chickens |x metabolism |
| 650 | 2 | 2 | |a Costs & Cost Analysis |
| 650 | 1 | 2 | |a Energy Intake |
| 650 | 2 | 2 | |a Meat |x economics |
| 650 | 1 | 2 | |a Models, Biological |
| 650 | 2 | 2 | |a Nonlinear Dynamics |
| 650 | 2 | 2 | |a Nutritional Requirements |
| 650 | 2 | 2 | |a Programming, Linear |
| 653 | |a Nutrient requirements | ||
| 653 | |a Poultry feed | ||
| 653 | |a Nonlinear programming | ||
| 653 | |a Feed formulation | ||
| 653 | |a Soybeans | ||
| 653 | |a Objective function | ||
| 653 | |a Economic | ||
| 773 | 0 | |t Poultry Science |g vol. 83, no. 2 (Feb 2004), p. 147-151 | |
| 786 | 0 | |d ProQuest |t Health & Medical Collection | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/223165771/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/223165771/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/223165771/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |