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.
Female chickens (hens) generally start laying eggs at around 20-24 weeks of age. Some breeds take longer. They don't need a rooster to lay eggs and if you are lucky they will â¦ lay an egg per day.Again this depends on the breed, with some chickens laying an egg every few days.They lay less over winter, when they are moulting or when they are stressed.ome breeds take longer. They don't need a rooster to lay eggs and if you are lucky they will â¦ lay an egg per day. Again this depends on the breed, with some chickens laying an egg every few days. They lay less over winter, when they are moulting or when they are stressed.