I found this and thought you all might be interested......
Healthy Eggs: What We Knew in 1932
In the 1930s, animal scientists were trying to determine the best diet for cows, pigs, and chickens that were raised in confinement. It was a time of trial and error.
In a 1993 experiment conducted by the U.S. Department of Agriculture, breeding hens were taken off pasture and fed a wide variety of feed ingredients. When the birds were fed a diet that was exclusively soy or corn or wheat or cottonseed meal, the chickens didnt lay eggs or the chicks that developed from the eggs had a high rate of mortality and disease.
But when birds were fed these same inadequate diets and put back on pasture, their eggs were perfectly normal. The pasture grasses and the bugs made up for whatever was missing in each of the highly restrictive diets.
The effect of diet on egg composition. Journal of Nutrition 6(3) 225-242. 1933.
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Healthy Eggs: What We Knew in 1932
In the 1930s, animal scientists were trying to determine the best diet for cows, pigs, and chickens that were raised in confinement. It was a time of trial and error.
In a 1993 experiment conducted by the U.S. Department of Agriculture, breeding hens were taken off pasture and fed a wide variety of feed ingredients. When the birds were fed a diet that was exclusively soy or corn or wheat or cottonseed meal, the chickens didnt lay eggs or the chicks that developed from the eggs had a high rate of mortality and disease.
But when birds were fed these same inadequate diets and put back on pasture, their eggs were perfectly normal. The pasture grasses and the bugs made up for whatever was missing in each of the highly restrictive diets.
The effect of diet on egg composition. Journal of Nutrition 6(3) 225-242. 1933.
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