Uso de glicerina na alimentação de cães adultos

Abstract

The goal of this study was to determine the mixed semipurified glycerin chemical composition, from biodiesel production, the metabolizable energy and to evaluate different inclusion levels in diet on feed productivity, fecal quality, palatability and blood parameters of adult dogs. In the digestibility assay, 20 Beagles, average weight of 13.9 kg (±1.92 kg), were distributed in a blocs randomized design in two periods with four experimental units and five treatments, with a reference diet and four test diets at levels of 2.5; 5.0; 7.5 and 10.0% of glycerin included, replacing the reference diet dry matter and eight replicates each. The feces of the animals were evaluated for consistency. During the feed production for the experiments it was observed the energy consumption by the extruder. In the palatability assay there were offered to the 27 Beagles two different foods simultaneously, a reference food and three test food, isonutritive, with 3; 6 and 9% of semipurified glycerin inclusion, replacing the corn of the reference diet, based on metabolizable energy, totaling three contrasts with 80 observations each, where it was observed the first choice and consumption. The parameters of HDL, LDL and VLDL, cholesterol, glucose and triacylglycerols of 16 healthy Beagles, 4.16 (±0.71) years old and 14.14 (±1.09) kg were evaluated. The glycerin metabolizable energy value was 5,381.5 kcal/kg. The energy consumption by the extruder reduced according to the increased levels of glycerin in diet. The higher inclusion levels showed suboptimal fecal scores. The inclusion of glycerin in food proportioned increase in food preference and in the first choice of the animals even in the level of 9% for 10 days. Although the increase in levels of LDL and total cholesterol in relation to the test food, the levels remained within the normal range, indicating that its inclusion, at the studied level, is viable for dogs food.