2.3. Egg quality parameters
The parameters relative to egg quality were evaluated at 76 weeks of age. Twelve eggs were randomly collected per treatment (2 egg per replicate) to determine these parameters. The collected eggs were weighed. The eggs were broken out individually onto a glass plate surface and allowed to sit for 5 min. The heights of yolk and albumen, and the diameter of yolk were measured using the callipers. Yolks were separated from albumen manually, and both were weighed.