Thursday, March 3, 2011

nutritional difference!


Pastured Eggs

Eggs are an exceptionally nutritious food as we all know!  It's not surprising, considering they contain everything necessary to grow new life!  But all eggs are not created equal. Anyone that produces true pastured egg knows they're profoundly different. So has anyone who's tasted one. This has been vigorously denied by peak industry bodies the world over, primarily representing conventional egg farmers, which assert that eggs from giant smelly barns are nutritionally equal to their pastured counterparts. 

Mother Earth News decided to test that claim. They sent for pastured eggs from 14 farms around the U.S., tested them for a number of nutrients, and compared them to the figures listed in the USDA Nutrient Database for conventional eggs. Here are the results per 100 grams for conventional eggs and the average of all the pastured eggs:
 Vitamin A:
  • Conventional: 487 IU
  • Pastured avg: 792 IU
Vitamin D:
  • Conventional: 34 IU
  • Pastured avg: 136 - 204 IU
Vitamin E:
  • Conventional: 0.97 mg
  • Pastured avg: 3.73 mg
Beta-carotene:
  • Conventional: 10 mcg
  • Pastured avg: 79 mcg
Omega-3 fatty acids:
  • Conventional: 0.22 g
  • Pastured avg: 0.66 g

Eggs also contain vitamin K2, with the amount varying substantially according to the hen's diet. Guess where the A, D, K2, beta-carotene and omega-3 fatty acids are? In the yolk of course. Throwing the yolk away turns this powerhouse into a bland, nutritionally unimpressive food.

It's important to note that "free range" supermarket eggs are nutritionally similar to conventional eggs. The reason pastured eggs are so nutritious is that the chickens get to supplement their diets with abundant fresh plants and insects. Having little doors on the side of a giant smelly barn just doesn't replicate that.