Avaliação nutricional e energética da levedura de cana-de-açúcar “spray dry” para galinhas poedeiras

Abstract

The experiments were conducted to evaluate the use of yeast, sugar cane by the method "Spray dry". Two experiments were conducted: the first was to determine the chemical composition and coefficient of metabolizable dry matter (CMADM), the coefficients of gross energy metabolization (CMAEB), the coefficients of apparent metabolizable energy corrected gross (CMAnEB) and values of apparent metabolizable energy (AME) and corrected for apparent nitrogen balance (AMEn) of the yeast sugar cane. The yast showed the following chemical composition: 90.68% of dry matter, 31.99% crude protein, 0.06% etério extract, 3.89% mineral matter and 4.130 kcal/kg DM of gross energy. The AME, AMEn, CMAMS, and CMAEB CMAnEB ingredient were 2.241 kcal / kgms; 1.981 kcal / kgms; 38.33%, 49.19% and 43.49% in dry matter, respectively. The second experiment was conducted to evaluate the inclusion of different levels of the yeast sugar cane in diets for laying hens on the performance and characteristics of the eggs. Birds were housed two hundred, forty-seven weeks of age in cages during three periods of twenty-eight days. The experimental design was completely randomized design with five treatments (one reference diet and four with 2%, 4%, 6% and 8% inclusion) and five replicates of eight birds. The feed conversion per dozen eggs, feed conversion by egg mass, laying percentage, egg weight and egg mass, there was no significant difference between treatments with the exception of a period in which the level 4.6% Total best result for feed conversion per dozen eggs. The inclusion of yeast sugar cane dried by spray dry-level up to 8% in diets of laying hens does not affect performance and egg quality.