All over the world egg production is gaining popularity and importance, mainly fuelled by increasing egg consumption.

Therefore, there are some challenges that producers need to overcome to fulfill consumer demands and remain profitable. The most urgent challenges are related to eggshell quality and productive life span.

• Maintaining normal physiology and good health of the laying hen is essential to produce high-quality eggs for longer periods of time.
• Dietary interventions like the feeding of fermented feeds, fiber, probiotics, prebiotics, and postbiotics are acceptable means for influencing the gut microbiota and its metabolic activity.