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.
Introduction. Chickens -- like other birds -- fertilize eggs via sexual reproduction. A hen will lay an egg at least every other day starting at about three months of age, but the eggs will only yield chicks if the hen mates with a rooster.ost hens won't lay eggs in the evening, so if a hen's egg is ready then, she will likely hold it until morning. Once she does lay, she's ready to start forming a new egg. After mating, enough sperm may remain in the hen to fertilize her eggs for a week or more.