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.
Good layers will sometimes lay for about 50 or 60 weeks and then go through a rest period. As daylight hours decrease, egg laying is sometimes affected; hens need about 14 hours of daylight to lay eggs.our chickens are probably molting (loosing their old feathers and growing new) while in their molt all the energy that normally goes into egg production goes into new feathers. They will start laying within 2-4 weeks, depending on the breed and age of the chicken.