Gravidade específica em ovos de matrizes pesadas

Abstract

The yield of the production of chicks and their quality is dependent on several factors, including the physical parameters during incubation, such as humidity, temperature and ventilation, plus the influence of age of broiler breeders and egg quality. The quality and yield of incubation of one day chicks is dependent on the age of the matrix that influence the egg weight, there is a positive correlation between increased size and weight of eggs with increasing age of the mothers. Moreover, eggs of younger matrices (up to 39 weeks) showed a greater hatching as compared with older arrays (50 to 65 weeks) due to reduction in shell quality and increasing the size of the eggs the extent that the matrices age. In addition, older mothers have higher late embryonic mortality due to initial quality of the albumen where older hens have an initial quality albumen worse than the eggs of younger matrices, which may further reduce its viscosity after storage of the eggs due the most rapid loss of CO2.