Utilização de grãos de milho secos por destilação com solúveis em dietas para frangos de corte
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2020-02-27
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Universidade Federal de Goiás
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The objective of this study was to evaluate the inclusion of distiller dried grains with soluble (DDGS) in place of soybean meal over zootechnical performance, and the addition of an enzymatic complex composed of amylase, xylanase and protease (AXP) on the metabolizability of nutrients for broilers. Two experiments with birds from the Cobb 500® lineage were conducted. In the first experiment, for the determination of carcass performance and yield and cuts, 600 one-day-old cutting chicks were housed, distributed in a completely randomized design, composed of four treatments (0, 10, 20 and 30% of soybean meal replacement by DDGS) and 10 replicates, containing 15 birds per experimental unit. At the end of the experiment (42 days), a bird per repetition, representing the average of boxing, was slaughtered to evaluate the parameters related to carcass yield and cuts. The data obtained were submitted to variance analysis (ANOVA) and F test. No significant differences were observed (p>0.05) between treatments for carcass performance and performance variables and cuts performed in a bird of each experimental unit at 42 days of age. In the second experiment to determine the metabolizability coefficients of nutrients, the method of total collection of excretes of 108 cutting chicks housed in galvanized steel cages, distributed in a completely randomized design, submitted to treatments: T1 - Reference feed, T2 - Reference feed (60%) + DDGS (40%) without enzyme, T3 - Reference ration (60%) + DDGS (40%) with enzyme and six replications, containing six birds per experimental unit. The data obtained were submitted to variance analysis (ANOVA) and F test. No significant differences were observed (p>0.05) for the metabolizability coefficients of dry matter, protein, crude energy, and also for apparent metabolizable energy and apparent metabolizable energy corrected with the inclusion of the enzymatic complex. It was observed that the addition of DDGS partially replaced soybean meal without affecting the parameters of performance and carcass yield. The use of enzymatic complex in the feed associated with DDGS does not influence the metabolizability of nutrients.
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OLIVEIRA, Natiele Ferraz de. Utilização de grãos de milho secos por destilação com solúveis em dietas para frangos de corte. 2020. 44 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Goiás, Goiânia, 2020.