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 will lay fertile eggs for about two weeks after a mating. Some may lose fertility after maybe 9 days bit I think most of us use two weeks and that usually works out OK. There have been several reported cases on this forum where eggs were fertile for as long as 3-1/2 weeks after a mating.t takes an egg about 25 hours to go through the henâs internal egg laying factory. It can only be fertilized during the first 15 minutes of that journey. Iâll help you with the math.