Modelos para avaliar o enriquecimento de selênio e vitamina E nos ovos de codornas japonesas e galinhas de postura

Abstract

This thesis was proposed in order to: verify the performance and egg quality of japanese quails supplemented with selenium (Se) and vitamin E, investigate the performance, egg quality and modeling the deposition of selenium (Se) and vitamin E in eggs of Japanese quails supplemented with these nutrients, evaluate by meta-analysis, supplementation (Se) chelated and non-chelated, evaluating the deposition in eggs, organs and performance of laying hens supplemented with these nutrients. At first objective 200 quails were used with 45 days of life, the experimental diets were supplemented with selenomethionine and vitamin E acetate, dl-α-tocopherol in the proportion of 0.2 ppm Se, 20 mg/kg vitamin E, 0.2 ppm up to 20 mg/kg vitamin E and basal diet (RR). In Objective 2, 600 quails were housed at 45 days of life in cages, four functions were adjusted for the deposition of Se in eggs, the treatments were: (RR) RR + 0.1 ppm Se + 20 mg/kg vitamin E (Se1) RR + 0.2 ppm Se + 20 mg/kg vitamin E (SE2), RR + 0.3 ppm Se 20 mg/kg vitamin E (SE3), RR + 0.4 ppm Se 20 mg/kg vitamin E (SE4). For objective 3 Data were composed of eight articles published between 2004 and 2010. If the levels of chelated and non-chelated included in the analysis were in the range of 0.15 to 0.9 ppm of this mineral in the diet Meta-analysis was performed by three sequential analyzes: correlation, graphical and variance - covariance. The conclusions reached were: Se supplementation and vitamin E is effective in increasing the concentration of these nutrients in the yolk and albumen of eggs of Japanese quail, but not influence the deposition of Se in the egg shell. Se supplementation and vitamin E did not influence the performance of quails, but influence the variables of quality. The models that best describes the deposition of Se in eggs and the shell is sigmoidal logistic and with 0.29 and 0.33 ppm for maximum deposition If the eggs respectively. The best model for deposition of Vitamin E is the requirement with sigmoidal 0.36 ppm Se for maximum deposition of vitamin E in eggs. The association of Se and vitamin E did not affect the production variables, but the variables of the quality of the eggs was influencing . The supplementation of the Se chelated and non-chelated influence the deposition in hens eggs, the laying rate and egg weight, however, does not influence the deposition of this nutrient in organs. The chelated form of Se is more effective deposition of eggs and has a greater rate of laying.