Even though the technology is now so advanced that a breeder can hatch eggs using state-of-the art incubators instead of broody hens, not all eggs incubated are fertile to hatch. One way to identify the fertility of eggs is through the method of duck candling. Infertile eggs can be recognized and can be simply removed from the whole batch to prevent contamination.
Read the full article with diagrams, pictures and videos at http://hatchingincubators.com/20/duck_candling.html
Whether it is chicken or duck candling, just about all eggs can be candled to identify its fertility. It is the simple process of shining on an egg with a strong lighting source, such as a strong flashlight, to check whether the egg is fertile or if the embryo is developing.
It is ordinarily easier to candle white eggs than freckled or dark colored eggs. You can get a commercial egg candler or make a simple tool to perform the chicken or duck candling. All you want for a DIY candling tool is a dark room and a strong flashlight. Just shine the light on the egg held up so that you can see through the egg.
Throughout the duck candling process, be cautious not to examine the egg for more than 10 minutes at any one time to prevent {adverse|{negative|harmful|damaging|destructive}} effects on the development of the embryo.
* Faint yolk directly in the egg middle with some air space on one end, indicating a newly laid egg that is unfertilized. * Fine red veins in the center of a watery yellow liquid which indicates a fertilized egg that is developing. *Dense mass, this is an indication of a fertilized egg where the chick or duckling has grown big enough to fill up the egg, blocking the light. *If the egg does not hatch at the due time, or there is a giant air bubble at one end of the egg, this is an signal that the chick has died. But if the candling reveals no yolk but a huge air bubble, this indicates an unfertilized egg which should be disposed.
Read more on all your egg hatching needs at http://hatchingincubators.com
Whether it is chicken or duck candling, the process can be completed one time in a few days to verify the embryo’s development as well as to prevent bacteria and germs from breeding and spreading from broken shells.
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