Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits
Nutritionists need to make commercial decisions about the optimal nutrient content broiler feeds. In order to demonstrate that broiler prices may influence dietary nutrient density, this study developed quadratic feed intake and weight gain equations, according to broiler sex and feeding phase, to b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Fundação APINCO de Ciência e Tecnologia Avícolas
2015-06-01
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| Series: | Brazilian Journal of Poultry Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200173&lng=en&tlng=en |
| _version_ | 1811325526131867648 |
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| author | CA Gonçalves MA de Almeida JA Faria-Júnior MF Pinto M Garcia-Neto |
| author_facet | CA Gonçalves MA de Almeida JA Faria-Júnior MF Pinto M Garcia-Neto |
| author_sort | CA Gonçalves |
| collection | DOAJ |
| description | Nutritionists need to make commercial decisions about the optimal nutrient content broiler feeds. In order to demonstrate that broiler prices may influence dietary nutrient density, this study developed quadratic feed intake and weight gain equations, according to broiler sex and feeding phase, to be applied in a nonlinear feed formulation model. Four hundred and eighty Cobb broilers were allotted to a completely randomized experimental with six treatments, each with four replicates of 10 birds each, from 1 to 56 days old. Treatments consisted of diets containing 2800, 2900, 3000, 3100, 3200, or 3300 kcal metabolizable energy (ME)/kg and constant nutrient to ME ratio. A nonlinear version of the PPFR feed formulation software (http://www.fmva.unesp.br/ppfr) was developed with the objective of optimizing energy density and bird performance. According to the results, when the models are applied in the PPFR nonlinear spreadsheet, the most favorable nutrient density content is defined by mathematical models, as optimized by the Excel Solver tool by means of cost/benefit comparisons and as a function of rearing phase (starter, grower, and finisher) and sex. This contradicts the recommendations of genetic company manuals and published requirement tables, whose goal is to maximize weight gain and do not necessarily guarantee maximum economic efficiency. |
| first_indexed | 2024-04-13T14:35:50Z |
| format | Article |
| id | doaj.art-40b06e86bc144e35a0f54497b0777073 |
| institution | Directory Open Access Journal |
| issn | 1806-9061 |
| language | English |
| last_indexed | 2024-04-13T14:35:50Z |
| publishDate | 2015-06-01 |
| publisher | Fundação APINCO de Ciência e Tecnologia Avícolas |
| record_format | Article |
| series | Brazilian Journal of Poultry Science |
| spelling | doaj.art-40b06e86bc144e35a0f54497b07770732022-12-22T02:43:03ZengFundação APINCO de Ciência e Tecnologia AvícolasBrazilian Journal of Poultry Science1806-90612015-06-0117217318010.1590/1516-635x1702173-180S1516-635X2015000200173Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing ProfitsCA GonçalvesMA de AlmeidaJA Faria-JúniorMF PintoM Garcia-NetoNutritionists need to make commercial decisions about the optimal nutrient content broiler feeds. In order to demonstrate that broiler prices may influence dietary nutrient density, this study developed quadratic feed intake and weight gain equations, according to broiler sex and feeding phase, to be applied in a nonlinear feed formulation model. Four hundred and eighty Cobb broilers were allotted to a completely randomized experimental with six treatments, each with four replicates of 10 birds each, from 1 to 56 days old. Treatments consisted of diets containing 2800, 2900, 3000, 3100, 3200, or 3300 kcal metabolizable energy (ME)/kg and constant nutrient to ME ratio. A nonlinear version of the PPFR feed formulation software (http://www.fmva.unesp.br/ppfr) was developed with the objective of optimizing energy density and bird performance. According to the results, when the models are applied in the PPFR nonlinear spreadsheet, the most favorable nutrient density content is defined by mathematical models, as optimized by the Excel Solver tool by means of cost/benefit comparisons and as a function of rearing phase (starter, grower, and finisher) and sex. This contradicts the recommendations of genetic company manuals and published requirement tables, whose goal is to maximize weight gain and do not necessarily guarantee maximum economic efficiency.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200173&lng=en&tlng=enEnergyexcelmathematical modelingnutritionresponse surface |
| spellingShingle | CA Gonçalves MA de Almeida JA Faria-Júnior MF Pinto M Garcia-Neto Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits Brazilian Journal of Poultry Science Energy excel mathematical modeling nutrition response surface |
| title | Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits |
| title_full | Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits |
| title_fullStr | Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits |
| title_full_unstemmed | Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits |
| title_short | Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits |
| title_sort | accuracy of nonlinear formulation of broiler diets maximizing profits |
| topic | Energy excel mathematical modeling nutrition response surface |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200173&lng=en&tlng=en |
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