Avaliação nutricional do glicerol para codornas de corte

• Ano de defesa: 2010
• Autor(a) principal: Batista, Eliany
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual de Maringá; Brasil; Programa de Pós-Graduação em Zootecnia; UEM; Maringá, PR; Centro de Ciências Agrárias
• Palavras-chave em Português: Codorna de corte; (Coturnix coturnix sp); Rendimento de carcaça; Digestibilidade; Nutrição; Desempenho; Energia; Brasil.; Quail cutting; Carcass yield; Digestibility; Nutrition; Performance; Energy; Brazil.; Ciências Agrárias; Zootecnia
• Link de acesso: http://repositorio.uem.br:8080/jspui/handle/1/1682

Three experiments were carried out to verifity the performance and carcass yeild of meat type quail, fed with diets containing increasing levels of glycerol from vegetable fat. In the first experiment, were used, 75 meat type quails, twenty days of age, non-sexed, housed in metabolism cages, and allotted in a completely randomized design, with three treatments and five replications, with five birds per replication. All diets were based on corn and soybean meal. The treatments were: a reference diet (RD), formulated to meet the nutritional requirements for this phase, a test diet with a replacement level on 10% of crude vegetable glycerol (CVG) and a test diet containing the replacement level of 10% vegetable semi-purified glycerol (VSG). There were no differences (P>0.05) in metabolizability coefficients of dry matter, organic matter and gross energy between treatments. The values of apparent metabolisable energy (AME) and apparent metabolisable corrected by nitrogen balance (AMEn) for CVG and VSG were: 4,564 and 3,069 and 4,112 and 2,994 kcal/kg as fed-basis, respectively. To the second experiment were used 1.152 meat type quails, one day age, non-sexed, distributed in a completely randomized design, with nine treatments, four replications with 32 birds per replication. The treatments were: a control diet (CD), four diets with levels inclusion (4, 8, 12 and 16%) of CVG and four diets with levels inclusion (4, 8, 12 and 16%) of VSG. The feed: gain ratio decrease linearly (P<0,05) as the levels of VSG increase. Considering the economic analysis, it was conclude that CVG can be included in the diets until 16% levels and, it use will depend on the price ratio between the ingredients. In third experiment, were used 792 meat type quails distributed in a completely randomized design, with nine treatments, four replications with 22 birds per repetition. The treatments used were the same of second trial and the experimental diets were based on nutritional requirements for this phase (15 - 35 days). The feed intake increased linearly (P>0,05) as increase the levels of VSG, concluding that, the crude and semi-purified glycerol, can be used as an energy source in the experimental diets until 16% of inclusion with no effects on meat type quails performance, getting use depending on the cost of glycerol.