The fresh new onset of egg laying having hens try affected by genotype, nutritional muscles updates and environment standards. Local types (white eggshell breeds-Padovana and you may Polverara; shaded eggshell types-Pepoi, Ermellinata di Rovigo, Robusta Maculata and Robusta Lionata) on Veneto part, inside North Italy, had been reared external of spring (six days old; six WA) so you can fall and you may winter season. New onset of putting ranged depending on the reproduce (22–twenty-eight WA): precisely the shaded eggshell types become putting at the conclusion of summer/beginning of trip, regarding the presence regarding a lessening sheer photoperiod, plus the eggs development survived for many days.