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.
So, how long does it take for fertilized chicken eggs to hatch? The answer to that is 21 days exactly, although you need to bear in mind that this can vary, depending on a number of circumstances.f for some reason the temperature has dropped below the correct temperature on a few occasions, you could find some of your eggs only hatching on day 22, 23, or even on day 24 or 25. Whereas fertilized chicken eggs usually take exactly 21 days to hatch, most duck eggs take 28 days, apart from Muscovy ducks.