Sephardic/Mizrahi Jewish Genetic Diseases. 1  Alpha-Thalassemia. 2  Ataxia Telangiectasia. 3  Beta-Thalassemia (B- 4 T) Corticosterone Methyloxidase Type II Deficiency.  Costeff Optic Atrophy (also known as Type III 3-methylglutaconic 1  Aciduria) Cystic Fibrosis.  Familial Mediterranean 1  Fever. Familial Tumoral Calcinosis.
They will lay best at 1 to 2 years of age. All pullets (female chicken under 1 year of age) lay small eggs at first and after a while will lay larger eggs. Younger hens will lay 1 egg every 3-4 days. A hen 30 weeks old can lay 2 eggs every 3 days.
After 24 to 32 weeks of growing up, your hens will lay an egg almost every day for eight or nine months straight, then take a break for a few weeks to a few months (typically in the winter), and then start laying again. Each time they start laying again, they will lay fewer, but larger, eggs. It is not unusual for a pet hen to lay for five yearsâat which point she may be laying only a couple of eggs a week on averageâand to live even longer.