I'm currently writing a report on chicken eggs, and I was wondering about the colour of egg yolk... What affects the egg yolk colour? and what exactly is the "industry standard" as far as colour goes? If someone can link me to an internet site with this kind of info, that would be great.
2007-08-13 14:00:40 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Agriculture
This is a good link to read up on egg yolk colors. Cage raised chickens have pale yellow yolks, about the only kind you can get at a grocery store. Free range chickens have a rich golden color yolks. They get most of the color from the carotene they get from having access to greens like grass and clovers.
http://www.yellow-egg.com/wEnglish/filme/index.shtml?navid=21
2007-08-13 15:33:50 · answer #1 · answered by john h 7 · 1⤊ 1⤋
There aren't industry standards per se, but there are standardized egg yolk color wheels. My co-worker actually uses them every day.
The primary colorant in yolks are carotenoids such as lutein. This is a well known fact in that farmers have been supplementing chicken feed for decades with lutein to give darker yellow yolks. They do this because consumers want darker yellow egg yolks and prefer brands that consistently have them.
Sorry I don't have an exact link, but this should give you some key words to look for.
2007-08-13 14:51:31 · answer #2 · answered by The Great W 1 · 0⤊ 0⤋
This Site Might Help You.
RE:
Egg yolk colour?
I'm currently writing a report on chicken eggs, and I was wondering about the colour of egg yolk... What affects the egg yolk colour? and what exactly is the "industry standard" as far as colour goes? If someone can link me to an internet site with this kind of info, that would be...
2015-08-07 01:18:07 · answer #3 · answered by Robena 1 · 0⤊ 0⤋
the deep yellow ones are perhaps better as I raise hens and on occasion when I have to buy eggs I notice they are more bright light yellow. A good indication of a healthy egg is the egg white not running much, but staying in a uniform shape around the yolk. It may vary due to how they are raised, free range hens are simply allowed to walk in the barn, if they can move as it is so crowded, other hens spend their life sitting in a cage, then when they lay the egg, it rolls out onto a tray for collecting. My birds are outside in a large pen with bugs to eat etc and locked away safely at night. So buy eggs froma local small farm if you can, better for you and the hen!
2016-03-19 01:28:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I know for a fact by raising chickens i did an experiment of egg yolk color with supermarket eggs(white) being the palest also with the least protein next was the brown store egg little darker, then the white(naturally occuring) farm raised- being free roaming orgainically raised- have a little more color and more protein then the brown farm raised and finally behold the green yes i said green or blue egg that almost have an orange color and the most protein available in an egg!
2007-08-17 06:42:54 · answer #5 · answered by Tifferlily 2 · 0⤊ 0⤋
Free-range chicken eggs have much darker yolks than confinement produced chicken eggs because they have so much more beta carotene as well as other nutirents like vitamin E and omega 3 fatty acids. There is a GREAT article about all that at Motherearthnews.com
2007-08-15 16:54:00 · answer #6 · answered by pippinstar 2 · 0⤊ 0⤋
Don't know about a site, but I raised quite a few chickens! The yolk is yellow; the color is a result of SULPHUR. You can discern that by allowing an egg to rot! You will smell the sulphur! Also, it will tarnish a silver spoon.
2007-08-17 16:33:26 · answer #7 · answered by Nothingusefullearnedinschool 7 · 0⤊ 0⤋
Try this site it has a lot of info and links. You will find a ton of stuff about chickens layers and broilers and standard for eggs.
www.poultryscience.uark.edu
Good Luck
2007-08-13 14:09:20 · answer #8 · answered by T brown 3 · 0⤊ 0⤋
sorry I dont have a site But i think it is Yellow! I dont know
2007-08-13 14:08:02 · answer #9 · answered by Brittany 2 · 0⤊ 3⤋