Inclusão de extratos padronizados de Stryphnodendron adstringens e Lafoensia pacari em rações de poedeiras comerciais

• Autor(a) principal: Moreira, Janaina da Silva
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/4118
• topic: Aditivos; Barbatimão; Cerrado; Desempenho; Pacari; Qualidade de ovos; Egg quality; Additives; Barbatimão; Cerrado; Performance; Pacari; PRODUCAO ANIMAL::MANEJO DE ANIMAIS

We conducted this study in order to analyze the supplementation of standardized plant extracts of Stryphnodendron and Pacari in the diet of laying hens over performance, internal and external egg quality and nutrients metabolizing in the feed. The experiment was conducted in the experimental aviary of Veterinary Medicine and Animal Science School - UFG. The plant extracts of Stryphnodendron and Pacari were processed in the Laboratory of Natural Products Research of the Pharmacy School of the Federal University of Goiás and presented respectively 5,95% and 4,52% of total tannins. The experimental design was completely randomized with six treatments and seven replications. The treatments were prepared diets with inclusion of performance enhancing antibiotic Halquinol, prebiotic Mannan-oligosaccharide (MOS) and three supplements of Stryphnodendron and Pacari extracts – 1.000 mg/kg, 2.000 mg/kg and 3.000 mg/kg diet.168 Isa Brown hens at 24 weeks of age were used. The experiment lasted for four periods of 28 days each. At the end of each period, the performance and internal and external egg quality were evaluated, and at the end of the last period, the metabolic assay was held. The crude extract of Stryphnodendron did not alter growth performance, although it improved the percentage of shell and egg specific gravity. The metabolizable ether extract was maximized when included 2.000 mg/kg and 3.000 mg/kg. Diets added of 1.000 and 2.000 mg/kg of Pacari extract reduced production and egg mass. The egg mass and specific gravity showed better results at all levels of inclusion of this extract. The metabolizability of the diet nutrients did not change. The inclusion of Pacari extract supplementation on 1.000 mg/kg was effective in replacing antibiotics in diets for laying hens. Supplementation with plant extract of Stryphnodendron did not alter the productive performance, but improved the percentage of shell in all levels of supplementation, and egg specific gravity, in supplementing 2.000 mg/kg diet. The coefficient of metabolizable ether extract improved in the supplementation levels of 2.000 and 3.000 mg/kg of extract Stryphnodendron. Supplementation with 2.000 and 3.000 mg/kg of Stryphnodendron extract levels of 2000 and 3000 mg/kg is an alternative to the use of performance enhancing antibiotic. The extract supplement Pacari reduced egg weight, although all used levels have increased eggshell percentage and egg specific gravity. All levels supplementation of Pacari extract promoted metabolization coefficient of ether extract similar to the diets supplemented with MOS and halquinol. Supplementation with Pacari extract level 1.000 mg/kg was satisfactory in replacing antibiotics in diets of laying hens.