
Originally Posted by
*Classic*Charm*
Hey Cafolini, I'm not sure where you got the information in your post, but some of it is WRONG, and I feel the need to correct it. I, too, hate the propagation of misinformation, and there is a whole heck of a lot of it going around right now. So it's nothing personal, but your post is heavily biased and completely untrue in places, and given my background in nutrition and farm animal science, I feel the need to balance it out a little.
Let's get something straight right off the bat: the nutrient profile of an egg is the DIRECT RESULT OF WHAT THE HEN HAS BEEN FED, no matter how she is housed or how much exercise she gets. I'm not here to support or condone modern farming practices or free-range, merely to talk about eggs and how their nutrient profile has nothing to do with the hen's housing situation.
Hens raised in cages are not fed heaps of corn, as this quote suggests. They are fed what is called a "complete feed"- it is an extruded pellet feed that is nutritionally complete for the hen (which corn would not be), ensuring that her nutritional needs are met to ensure both growth and production. In fact, BOTH caged hens and free-raging are fed this type of grain. Hens that are free-ranging DO NOT rely on their environment to provide them with adequate nutrition. Free-range hens do NOT have better nutrition than caged hens. Hens do not produce maximally if they are not fed maximally. Period.
The reason an egg has Omega-3 and -6 fatty acids in it is because they have been fed to the hen. They come from fish oils added to the complete feeds given to the hens. Whether the hen is caged or not, she will acquire these fats from her grain, NOT from plant matter that they might find by browsing in a cage-free setting.
The reason there is variation in the colour of the yolk is because of what the hen has been fed. Different ingredients in the hen's feed will cause this (IE., two different feeds may have the same nutrient profiles, but from different sources. Different sources of ingredients in the feed result in different colour). Darker does not equal better quality or "healthier". Lighter does not equal poorer quality. In fact, different parts of the world have different preferences for colour (purely aesthetic) and the producers in those countries feed to ensure that they will get that colour. For example, France tends to prefer dark orange, almost red yolks. Doesn't mean they are any healthier.
Shell quality. A hen must put 2g of calcium into every egg shell she produces. 1g comes from the diet, 1g comes from her own bones. You cannot load her up with calcium and get her to put 2g into the shell from her nutrition. It just doesn't work. So, there are a variety of reasons why the egg shell may come out soft, primary because is not meeting the calcium requirement. Most commonly, this is because her bodily calcium stores have been depleted for many reasons. Alternatively, she has ovulated before her egg has sat in her repro tract long enough to harden, which us usually a genetic problem. This has nothing to do with her housing situation.
It is a horrible, unfounded assumption to make that hens raised in a cage-free setting are healthier than hens raise in cages. It is also a completely untrue assumption that eggs from free-range hens are healthier than eggs from cage-raised hens. Just completely false.