2006-06-09 15:12:16 · 11 answers · asked by abby_girl90 1 in Pets ➔ Birds
ONE EGG - TWO YOLKS ( SUITABLE FOR HATCHING ?)
double yolked egg, double yolked eggs, egg, Egg , Yolk , entrapment ,laying pattern,rooster's sperm,follicle cell,ovary,protein membrane
ONE EGG - TWO YOLKS !!!???
How are eggs (hen's) with two yolks produced? Can that happen naturally?
Double-yolked eggs are caused by entrapment of two yolks in one shell and the average frequency in nature is about 1 in 1000.
This phenomenon occurs primarily due to the age of the hen, but can also occur due to other factors such as genetic conditions (for example, heavy laying breeds).
Young hens that have not yet developed a laying pattern commonly produce double-yolked eggs. Each egg yolk starts as a follicle cell in the hen's ovary. When a follicle is released from the ovary, it reaches the funnel-shaped infundibulum.
Here is where the rooster's sperm cells get collected and fertilization occurs. Then the yolk reaches the magnum where albumin layers (part of the egg white) are added. The next part of the oviduct is the isthmus where water and more albumin are added and the `egg' gets covered by two fibrous protein membranes.
The egg then reaches the `shell gland' where it gets the hard calcium shell. Finally, the egg is laid.
Young hens sometimes secrete two follicles in quick succession from the ovary. When both of them are together in the oviduct, they get `entrapped' in the same shell leading to a double-yolked egg.
Rarely, one of the follicles remains in the infundibulum too long to be joined by the next secreted follicle leading to double-yolked eggs.
Breakage of non-follicle tissue from the ovary is sometimes mistaken as a yolk and gets covered in the oviduct with albumin and shell. This leads to an egg with no yolk inside.
Double-yolked eggs do not hatch two chicks; usually both the chicks die. There is not enough space for two chicks in the eggshell and neither of the chicks can reach the air-cell (seen in between the two membranes at one end of the egg).
The yolk inside the egg that is formed in the ovary is released by ovulation. A fully formed egg is laid after passing through several stages.
The time gap between two ovulations is generally more than 23 hours.
When there is a release of second yolk at quick succession before the first one passed down to form a complete egg, the double yolk egg results. In this both the yolks are processed together and are encased in a single shell.
This is very common in chicken, which are in high rate of lay. These eggs are larger in size than single yolk eggs and are edible. The highly active ovary due to high activity of reproductive hormones in peak egg production is responsible for this. Double yolk eggs are not suitable for hatching.
2006-06-09 15:27:07 · answer #1 · answered by cowgirl_nc_21 2 · 0⤊ 0⤋
The chicks would eat eachother. Usually right before they hatch because 99 pct of the time they are joined together and each would bite at eachother til they are free and by that time they usually die. At the nassau county fair they had a 2 headed chicken which was a double yolk egg and suprisingly the chicken did live so yes they could be hatched live.
2006-06-09 23:57:32 · answer #2 · answered by De Nirezza 4 · 0⤊ 0⤋
If the twin embryos survive to hatching age, they usually pip the egg at each end. The problem with this is that only one end has the air bubble where the shell is first cracked. The small end has no bubble and the embryo usually can't pip the egg because of that. This is a best-case scenario. Usually both embryos die at some stage of development. I once bought a dozen eggs at a farm stand and 9 out of the 12 were double-yolkers!
2006-06-16 11:23:24 · answer #3 · answered by correrafan 7 · 0⤊ 0⤋
I wouldn't know. I don't know if the chicks would fight each other for survival but I guess it'd be harder for them to hatch at the same time since when they reach day 20 there's a limited amount of space in the egg.
If you're a situtation with 2 chicks developing in the same egg I would ask a vet about what to do with them. One of them might end up losing their brother or sister if it turns out to be a problem.
2006-06-10 00:25:41 · answer #4 · answered by Checkers- the -Wolf 1 · 0⤊ 0⤋
same as any other.... when it gets broken open... the eggs you find in the market arent ffertilized .. as in they have no babies in it to hatch... so if the inanimate egg were to hatch it would be by an outside force... but im not sure if hatching is the word for it.
2006-06-09 22:26:36 · answer #5 · answered by ambidextrousartist 2 · 0⤊ 0⤋
I would guess it's twins! I hate frying eggs and getting a double yolked. lol
2006-06-09 22:16:48 · answer #6 · answered by ▒Яenée▒ 7 · 0⤊ 0⤋
Ya know the yolks arnt accually the babies, its what the babies eat, there wont be a baby unless its accually fetilize then you should see the baby along with the yolk
2006-06-09 22:18:32 · answer #7 · answered by Skittles 4 · 0⤊ 0⤋
They can not hatch if they are fertilized. The babies will fight to survive and eventually kill each other.
2006-06-09 22:16:26 · answer #8 · answered by Blondie 2 · 0⤊ 0⤋
If they hatch it will be like twins
2006-06-09 22:18:22 · answer #9 · answered by darlena88 3 · 0⤊ 0⤋
i am just guessing but maby like the 2 headed anamuls or sutin?
i dont know...i hope it turns out ok for ya
2006-06-09 22:40:15 · answer #10 · answered by Anonymous · 0⤊ 0⤋