Candling quail egg is the process of determining whether the quail egg contain an embryo. It is a necessary task to perform because if one rotten quail egg are present in an incubator, it poses a threat of spreading bacteria to other quail eggs in the incubator. To perform candling, an individual must use a narrow LED penlight in a darkened room to look into the quail eggs.
The quail egg shells contains dark brown speckles that makes it difficult to see into the shell. Therefore, a bright light must be used to view the contents of the quail egg shell and move the quail eggs to find any patch in the shell. During the first stage of candling, which occur between days five and seven of incubation, the embryo that is present in healthy quail eggs will exhibit dark spots at the embryo’s center, referred to as embryo dots, and the vein that radiate out from the embryo dot.
How to Check Quail Eggs for Embryos
Quail eggs that do not exhibit these characteristics is deemed to be infertile. Infertile quail eggs will glow a golden or amber color. You should remove these eggs from the incubator because they can break down and introduce bacteria into the incubator.
Quail eggs that contain blood rings or detached vein should also be removed from the incubator. Blood rings are red circles within the egg that indicate that the embryo within the egg passed away due to either temperature changes or weak sperm. Detached veins are strands within the egg that do not exhibit a pulse at the embryos center.
These also indicate that the embryo has passed away within the egg. By day ten of incubation, the embryo have developed more within the egg. Healthy quail eggs will display a chick shadow that fill the majority of the quail egg.
Additionally, the air cell that is present at the top of the quail egg will be crisp and the contents within the egg will shift when you tilt the quail egg. Quail eggs that contain dead embryos will exhibit characteristics of a stationary dark mass or lump within the egg that rolls within the shell. Some of these eggs may also be rotten.
Rotten quail eggs will have murky green-black interior. Additionally, the rotten eggs may leak out of the shell and leave an oily sheen on the outside of the shell. Should any rotten quail eggs explode within the incubator, the other quail eggs will be coated in slime from the rotten egg and the mortality rate for those healthy eggs will increase.
To candling quail eggs properly, the environment and the eggs themselves should be managed properly. Bright lights should be used to view into the quail eggs because the speckles on the shell block the light and the quail eggs require more light than chicken eggs. You should collect the quail eggs twice daily to avoid filth touch the eggs.
The eggs should be stored in a cool location with the pointed end of the eggs pointing downwards. However, the eggs should not be stored for more than one week. Additionally, prior to placing the quail eggs within the incubator, the incubator should be calibrated while it is empty.
Many of the problems that are experienced with incubating quail eggs occur due to several basic mistakes that people make. For example, dirty quail eggs can introduce bacteria into the incubator. However, the eggs should not be washed because this remove the protective shield of the cuticle layer on the shell of the quail egg.
Additionally, placing the quail eggs into overcrowded coops can create stress for the quail and lead to lower fertility of the eggs. Therefore, the ratio of roosters to quail in the coop should be one rooster for every three or four hen. Additionally, the eggs should be turned several times each day until the lockdown period to prevent the yolk from adhering to the shell of the egg.
Finally, the bad quail eggs should be disposed of properly. Infertile quail eggs can be composted in a deep compost pile. However, rotten eggs should be buried or placed into sealed trash cans in outdoor locations to prevent unpleasant fumes from the rotten eggs from escaping into the air.