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yolk color

post #1 of 3
Thread Starter 

my yolks are yellow, very yellow.  what makes them orange?  i free range them for most of the day.  during the summer they are out from sunrise to sunset.  now that its winter they are out about 10am until sunset.  they get kitchen scraps.  organic layer feed.  they get a mix of grains i toss out of wheat, oat, boss.  they also get some fodder, not much tho.  what am i missing?  

post #2 of 3

Carotenoids.  Birds don't synthesize them in the diet so they end up coloring the yolk.

That is usually from greens when foraging or other supplements.

They not only contribute pigment but antioxidants in the immune system.

Even if they get them in the diet, they could be utilized in other systems during times of stress.

 

The carotenoids lutein and zeaxanthin are found in yellow corn.

Most of the yolk color in birds fed commercial feed in the US comes from the yellow corn in the diet.

In Africa, white corn makes up a big part of the diet in some flocks so the yolks are very pale.

 

http://www.worldpoultry.net/Broilers/Nutrition/2012/8/The-effect-of-carotenoids-on-yolk-and-skin-pigmentation-WP010752W/


Edited by ChickenCanoe - 12/12/15 at 5:24am

NPIP 43-813

“Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.

Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.”                  Mark Twain

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NPIP 43-813

“Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.

Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.”                  Mark Twain

Reply
post #3 of 3

It depends on what they eat.

 

http://www.thekitchn.com/what-does-egg-yolk-color-actually-mean-ingredient-intelligence-215672

 

http://chemistry.about.com/od/foodcookingchemistry/fl/How-To-Change-Egg-Yolk-Color.htm

Foods That Naturally Influence Egg Yolk Color

Yolk Color Ingredient
nearly colorless white cornmeal
pale yolks wheat, barley
medium yellow yolks yellow cornmeal, alfalfa meal
deep yellow yolks marigold petals, kale, greens
orange to red yolks carrots, tomatoes, red peppers

You win some and lose some. When at first you don't succeed: try... try... try... try and try again.

 

How to Provide Emergency and Supportive Care        

Maintaining a Healthy Flock

Chicken Injuries & Diseases

Poop Chart 

Emergency Helpful References & Links

Reply

You win some and lose some. When at first you don't succeed: try... try... try... try and try again.

 

How to Provide Emergency and Supportive Care        

Maintaining a Healthy Flock

Chicken Injuries & Diseases

Poop Chart 

Emergency Helpful References & Links

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