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| Lima,Matheus Ramalho de; Costa,Fernando Guilherme Perazzo; Goulart,Cláudia de Castro; Pinheiro,Sarah Gomes; Souza,Rafael Barbosa de; Morais,Sérgio Antonio de Normando; Lima,Raffaella Castro. |
| The objective of this study was to evaluate the reduction of protein, the formulation of diets and supplementation of an enzyme complex for laying hens. The layers were distributed in a completely randomized 2 × 2 × 2 factorial arrangement, with two levels of crude protein reduction (0.0 and 4.0 g/kg), two kinds of diet formulation (without and with reformulation, considering 75 kcal of metabolizable energy) and two enzyme supplementations (without and with enzyme complex supplementation), totalizing 8 treatments of 8 layers each, with 7 replications, in a total of 448 laying hens at 30 weeks of age. After data analysis, it was found that the enzyme complex supplementation in the diet of layers improves performance, promotes a similar egg quality and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone health; Egg quality; Intestinal health; Performance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900013 |
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| Araújo,Gilson Mendes; Silva,José Humberto Vilar da; Vieites,Flávio Medeiros; Moraes,George Henrique Kling de; Souza,Rafael Barbosa de; Barbosa,Anderson de Almeida; Caramori Junior,João Garcia. |
| The objective of this study was to evaluate the chemical composition and bone strength of the tibiotarsus of broilers at 7 and 14 days of age. Bone percentages of collagenous protein (CPr), non-collagenous protein (NCPr) and minerals (calcium, phosphorus, potassium and sodium) were determined. The experiment utilized 650 male Cobb chicks at one day of age, fed corn and soybean meal-based diets. The experimental design was of random blocks with five treatments, five replicates and 26 birds per experimental unit. The treatments consisted of a basal diet supplementated with NH4Cl to obtain five levels (-50, 0, 50, 100 and 150 mEq/kg) of electrolyte balance (EB). The levels of EB influenced the following characteristics: ash and potassium content; Ca:P ratio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electrolyte balance; Locomotor disorders; Metabolic acid; Tibiotarsus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000900021 |
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