Resíduo seco de fecularia associado à carboidrases na alimentação de frangos de corte

• Ano de defesa: 2018
• Autor(a) principal: Silva, Idiana Mara da
• Orientador(a): Nunes, Ricardo Vianna
• Banca de defesa: Eyng, Cinthia , Souza, Cleverson de , Takahashi, Sabrina Endo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual do Oeste do Paraná; Marechal Cândido Rondon
• Programa de Pós-Graduação: Programa de Pós-Graduação em Zootecnia
• Departamento: Centro de Ciências Agrárias
• País: Brasil
• Palavras-chave em Português: Aves; Coproduto; Enzimas exógenas; Polissacarídeos não amiláceos
• Área do conhecimento CNPq: CIÊNCIAS AGRÁRIAS:ZOOTECNIA
• Link de acesso: http://tede.unioeste.br/handle/tede/3752

The objective of this study was to evaluate the dry residue of cassava (DRC) and its inclusion, associated or not to the carbohydrase enzyme supplementation, on the production of broilers in the growth and finishing phases. In experiment I, a metabolism assay was performed using 144 birds from 22 to 32 days of age. Was used a 2x4 + RR factorial scheme, consisting of one reference diet without addition of RSF and four experimental treatments with increasing inclusion levels of DRC (10; 20, 30 and 40%) and the suplementation or not with an enzymatic blend of carbohydrases. The DRC was submitted to bromatological analysis and excreta were also submitted to bromatological analysis for the determination of AME, AMEn, CAME and CAMEn. In experiment II, a performance test was performed using 950 broiler chickens from 21 to 42 days, in a 2x5 factorial scheme consisting of five experimental treatments with increasing inclusion levels of DRC (0; 2,5; 5,0; 7 , 5, and 10%) and the supplementation or not with an enzymatic blend of carbohydrases. At 42 days of age, the performance, biochemical profile, carcass yield, cut and organs and evaluation of meat quality were evaluated. As a result, the composition found for DRC in experiment I in the natural material was 89.86% DM, 0.98% CP, 3519 kcal kg -1 GE, 0.19% EE, 27% of NDF, 19.5% of ADF, 0.33% of calcium, 0.43% of phosphorus, 0.46% of potassium and 0.12% of magnesium. The analysis of variance showed no interaction between the addition of carbohydrases and the inclusion of increasing levels of DRC for the energetic values and the metabolizability coefficients, however, the inclusion of enzymes independent of the DRC levels provided a significant increase in the AME and AMEn. There was a quadratic effect for the increasing levels of inclusion of DRC, resulting in a higher value of AME and CAME at the estimated level of 35.47% and for AME and CAME at the estimated level of 35.86% inclusion of DRC. For the variables determined in experiment II, interaction between levels of inclusion of DRC and enzymatic supplementation for feed conversion (FC) was observed for the performance variables. Birds receiving carbohydrate-free diets presented a linear decrease of FC with the increased inclusion levels and birds that was supplemented with carbohydrates maintained the FC. There was interaction between DRC inclusion levels and the addition of enzymes to breast yield. A linear reduction in the relative weight of the gizzard was observed as there was an increase in inclusion levels, and a linear increase in the relative weight of the small intestine and the enzyme effect on this parameter were observed. The blood profile had significant results for Creatinine and GammaGT. The "b *" coloration variable of the breast meat and poultry feet presented a linear reduction as the DRC inclusion levels increased. For meat quality, the water retention capacity behaved in a quadratic manner as the DRC inclusion levels increased. For the other variables, no significant difference was found. It was concluded that the highest levels of AME and AMEn were found for the mean inclusion level of the DRC of 35% and that enzymatic supplementation could promote increase of these parameters by up to 12% in broiler diets in the growth phase and that DRC can be used in the diet of broiler chickens up to the 10% level, provided that they are supplemented with carbohydrases to maintain the feed conversion of broiler chickens in the growth and finishing phase.