Inclusão de extratos padronizados de Stryphnodendron adstringens e Lafoensia pacari em rações de poedeiras comerciais
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Data
2014-02-27
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Universidade Federal de Goiás
Resumo
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.
Descrição
Palavras-chave
Aditivos , Barbatimão , Cerrado , Desempenho , Pacari , Qualidade de ovos , Additives , Barbatimão , Cerrado , Performance , Pacari , Egg quality
Citação
MOREIRA, Janaina da Silva. Inclusão de extratos padronizados de Stryphnodendron adstringens e Lafoensia pacari em rações de poedeiras comerciais. 2014. 45 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2014.