|
|
|
|
|
| Almeida,TW; Silva,AL; Saccomani,AP; Muñoz,JA; Silva,RT; Franca,NV; Faria,DE; Faria Filho,DE. |
| ABSTRACT Feed formulation using linear programming consists of determining the mixture of feedstuffs required to meet pre-established animal nutritional requirements at the lowest cost. On the other hand, with the use of non-linear programming, it is possible to define nutritional requirements at the time of formulation, aiming at maximum profit. The objective of the present study was to compare feeds formulated using linear and non-linear programming in terms of live performance and internal and external egg quality of commercial laying hens. A total of 288 Hisex® White laying hens, 1.540 ± 0.128 g body weight, were evaluated from 33 to 45 weeks of age. Hens were distributed in a completely randomized block design, including six treatments with six... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diminishing returns; Linear programming; Mathematical modeling; Meta-analysis; Profit.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300313 |
| |
|
|
| Muñoz,JA; Suckeveris,D; Demuner,LF; Saccomani,APO; Silva,AL; Silva,RT; Faria Filho,DE; Faria,DE. |
| ABSTRACT The objective of this study was to evaluate the effects of dietary nutrient levels on performance, carcass yield, commercial cuts, digestibility and economical viability of broilers from 1 to 42 days of age. During the experiment, 180 COBB 500™ chicks were housed in metal batteries and subjected to a completely randomized design in a 2x3 factorial arrangement, of two sexes and three diets (male, female and mixed), totaling 6 treatments and 6 repetitions of 5 birds each. Data were subjected to statistical analysis and the means were compared using the Tukey test, at 5% probability. The results indicate the effect of sex on performance and commercial cuts, except for breast and thigh fillets, in which males and females showed similar results when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic viability; Metabolizability; Nutrition; Nutritional requirement; Poultry.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100053 |
| |
|
|
|
