1 Rheumatologists have the most specific training and experience in SjÃ¶gren's syndrome as well as the many disorders often associated with the syndrome.  Ophthalmologists can diagnose early problems with the cornea and assess the degree of damage to the eye.
It takes an egg about 25 hours to make its way through a hen's internal egg laying factory. The egg can only be fertilized during the first 15 minutes or so of that journey. If the mating takes place in a Monday, Monday's egg is not fertile.It started its journey on Sunday.Depending on what time the mating took place and the egg started its journey, Tuesday's egg might be fertile.But it might not.Wednesday's egg is almost certainly fertile. Notice that this is after a mating. A rooster does not always mate with each and every hen in the flock every day. Usuallyy a hen will stay fertile about 2 weeks after a mating, sometimes a little less but usually a little more.ut it might not. Wednesday's egg is almost certainly fertile. Notice that this is after a mating. A rooster does not always mate with each and every hen in the flock every day. Usuallyy a hen will stay fertile about 2 weeks after a mating, sometimes a little less but usually a little more.
Eggs can keep for quite a while, while the hen is making a clutch.   How long does it take for her to make a clutch?   A clutch takes however long she'd like it to take lol. The average chicken lays about one egg every other day, and she, depending on her size, will likely make a clutch of 4-10 eggs.Once she stays on the nest fully for one whole day, you can count that as the first day of incubation, and start the 21 day countdown :).he average chicken lays about one egg every other day, and she, depending on her size, will likely make a clutch of 4-10 eggs. Once she stays on the nest fully for one whole day, you can count that as the first day of incubation, and start the 21 day countdown :).