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.
Most hens start to lay eggs at about 6 to 8 months old. The first few eggs are usually not well formed or very small. After that they will lay according to the breed, either daily or every second day under the right conditions and with good feed. chicken can lay up to 300 eggs a year I like to plan for 280 the life span of a commerical chicken is 30 months so the most you will receive is 700 @ 280 per year.