Relação entre energia metabolizável e aminoácidos sulfurosos para aves leves na fase de postura

Abstract

This study aimed to determine the ideal relationship between metabolizable energy (ME) and methionine + cystine (M + C) laying hensfor the 24-43 weeks of age. The experimental design was completely randomized distributed in a factorial 4 (levels of digestible M + C) x 3 (levels of EM), totaling twelve treatments. Thetreatments had seven replicates with eight birds per each. The diet treatment 2 was formulated to meet the requirements of all nutrients, according to the recommendations of Figueiredo Jr. (2013) and treatment 8 to meet the requirements of Rostagno et al. (2011). For the other treatments percentage proportions of the recommendation of Rostagno et al. (2011) were established. of levels ME and M + C digestible. During the productionperiod it was observed that there was an interaction of the factors studied for the variables: feed intake and conversion, mass and dozen eggs, peel weight, percentage of shell and yolk.Therefore, the use of 0.689% is recommended digestible M + C associated with level of 2900 kcal / kg metabolizable energy to light laying – hens to 24-43 weeks of age.