Avaliação nutricional da glicerina bruta ou semipurificada, oriundas de gordura animal e óleo vegetal, para codornas de corte

• Autor(a) principal: Pasquetti, Tiago Junior
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
• Texto Completo: http://repositorio.uem.br:8080/jspui/handle/1/1679
• topic: Codorna de corte; Glicerina; Energia metabolizável; Desempenho; Avaliação nutricional; Biodiesel.; Ciências Agrárias; Zootecnia

Three experiments were conducted to determine nutritional value and performance of quails fed with two glycerin from animal fat and vegetable oil, called, crude glycerin (CG) and semi-purified glycerin (SG). At the first trial, 125 quails were used, with 22 days old, not sexed, housed in metabolism cages distributed on a completely randomized design with; five treatments and five replicates and; five birds by replicate. The treatments consisted on basal diet (RR), based on corn and soybean meal and, other four test diets (RT), and the glycerin product replaced by levels of 8 and 12%. The values of apparent metabolizable energy corrected for nitrogen balance (AMEn) were subjected to regression analysis to estimate the energy values, considering the intake of each AMEn glycerin according to the intake of glycerin of experimental units, under the constraint of the intercept equals zero. The estimates values of AMEn, for the CG and SG were 4,893 kcal/kg of fresh matter (FM) and 2,476 kcal/kg FM, respectively. In experiment II, 1-14 days old, were used 2,420 meat quails, not sexed, distributed on a completely randomized design, with 11 treatments and four replications, being the experimental unit formed by a box, with 55 birds. The treatments were a control diet, five diets with increasing levels of inclusion of CG, and five diets with increasing levels of inclusion of SG, using the same levels (3, 6, 9, 12 and 15%), for both glycerin. The diets were formulated according to the nutritional requirements for the phase of 1 to 14 days old. There was quadratic effect of CG on the body weight (BW) (P=0.06), weight gain (WG) (P=0.059), and biomass accumulated body (BCB) (P=0.055), with estimates for best performance in levels of 10.01; 10.00; and 9.98% of inclusion. The feed intake (FI) and litter moisture (LM) increased and feed conversion (FC) linearly worsened (P<0.05), with the inclusion of levels of CG. The SG, influenced in a quadratic way (P=0.08) the BW and WG, with estimates for best performance in levels of 9.60 and 9.65% of inclusion. Considering the performance data, it was concluded that, the glycerin can be included until the 10% level in the diets of meat quails in phase of 1 to 14 days old. In experiment III, 15 to 35 days old, were used 1,892 quails, not sexed, distributed on a completely randomized design with 11 treatments and four replications, being the experimental unit formed by a box, with 43 birds. The treatments were similar to those described in experiment II. The diets where formulated based on nutritional requirements for the period from 15 to 35 days. The BW, WG, FI, LM and breast yield (BY), increased linearly (P<0.05) with the inclusion of CG levels. The SG had performance data, it was concluded that, the glycerin can be included until the 15% level in the diets of meat quails in phase of 15 to 35 days old.