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.
Q. How many eggs can a hen lay each day? A. Because it takes 24-26 hours for a hen to construct an egg (adding the albumen, shell membranes and shell) and since chickens have only a single ovary and oviduct, hens are only able to lay an egg a day at the most.ome hens in backyard flocks lay eggs for 3-5 years but there isn't any research that has been done into how long they can lay before they go start 'menopause'. The oldest living chicken (at least documented) was about 13-14 years-although she was a hen, she did notlay eggs.