Solidos totais e rendimento dos componentes dos ovos de poedeiras brancas e marrons

The experiment was conducted to evaluate the influence of lines, age of the hens and egg size on egg weight, albumen and yolk percentages, and total solid concentrations of the albumen and yolk characteristics. Seven hundred twenty eggs were randomly distributed in a 2 x 3 x 3 factorial scheme: lines of the hens (White - Lohmann LSL and Brown - ISA Brown), age of the hens (25-26, 47-48 and 62-66 weeks), and egg size (medium, large and extra), totalizing 18 treatments with 40 replicates of one egg each. The results showed that eggs produced by the white hens had higher yolk percentage than those produced by the brown hens, irrespective of the age. As the age of hens increased, albumen percentage decreased and yolk percentage increased for both lines. Eggs produced by older hens had smaller albumen and yolk solid concentrations than younger hens. It was concluded that eggs produced by white layers are more indicated for egg-processing industry due to highest yolk yield. Egg size does not influence the concentration of total solids and the age of the hen is a decisive factor of the albumen and yolk yield.