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.
Brown egg layers will lay 240-280 eggs a year and eat 3.5 pounds of feed for every dozen eggs they lay. Once the hens lay for 60-65 weeks, they are rested or molted. This will force all the hens to stop laying at the same time and allow them rebuild calcium stores and restore body condition.his saves time and money separating the females for egg production. Todayâs egg producing hens can produce over 300 eggs per year; this is over twice the average of 150 eggs per year in 1947.