I remember a long time ago when a lot of folks started fermenting feed and talking about it here on byc, there was a discussion regarding the egg yolks being larger. Several people said that they noticed that when the switched to fermented feed, the egg yolks became larger.
I was new at chickens at the time and had nothing to compare with. So even though I was fermenting or soaking feed, I couldn't say whether the yolks were any different since I hadn't fed totally dry feed to egg laying age pullets or hens before. Plus sometimes I think that folks hope to see something and it may skew how they see
Fast forward to today.
I am part of a milk share and they also have a truly free-range laying flock. Over the weekend I picked up a dz of their eggs while I was out there since I'm only getting 2 eggs every other day at this point with molting. We had taken a tour of the farm since my daughter wanted to do a blog post on them (you can read my daughter's blog post about it here: http://www.followtheflavor.com/2014/10/pasture-haven-farm-raw-milk/ and see lots of photos toward the end that she took).
Anyhow, the chickens there have dry feed in their horse trailer coops and they get to run the fields at-will with nothing to fence them in. I imagine that there is soy in the feed...I didn't ask. But it is non-GMO and mixed fresh by a local feed mill. Except for the soy, (and my grains/legumes are organic) my feed is very similar in texture and content to theirs.
Today I cracked open 5 of the eggs to make a flourless chocolate cake. The eggs were x-large. The yolks were nice and yellow. But...compared to my eggs, the yolks were tiny. Probably about half the size as the yolks I have. Way more white.
Now I know it's not due to lack of free pasture. Maybe the variable of soy, but most of the fermenting people that were saying the yolks were larger were feeding store-bagged, soy filled, GMO feeds right off the shelf.
So....I'm thinking they may be right! Maybe soaked/fermented feed DOES produce larger yolks!
I was new at chickens at the time and had nothing to compare with. So even though I was fermenting or soaking feed, I couldn't say whether the yolks were any different since I hadn't fed totally dry feed to egg laying age pullets or hens before. Plus sometimes I think that folks hope to see something and it may skew how they see

Fast forward to today.
I am part of a milk share and they also have a truly free-range laying flock. Over the weekend I picked up a dz of their eggs while I was out there since I'm only getting 2 eggs every other day at this point with molting. We had taken a tour of the farm since my daughter wanted to do a blog post on them (you can read my daughter's blog post about it here: http://www.followtheflavor.com/2014/10/pasture-haven-farm-raw-milk/ and see lots of photos toward the end that she took).
Anyhow, the chickens there have dry feed in their horse trailer coops and they get to run the fields at-will with nothing to fence them in. I imagine that there is soy in the feed...I didn't ask. But it is non-GMO and mixed fresh by a local feed mill. Except for the soy, (and my grains/legumes are organic) my feed is very similar in texture and content to theirs.
Today I cracked open 5 of the eggs to make a flourless chocolate cake. The eggs were x-large. The yolks were nice and yellow. But...compared to my eggs, the yolks were tiny. Probably about half the size as the yolks I have. Way more white.
Now I know it's not due to lack of free pasture. Maybe the variable of soy, but most of the fermenting people that were saying the yolks were larger were feeding store-bagged, soy filled, GMO feeds right off the shelf.
So....I'm thinking they may be right! Maybe soaked/fermented feed DOES produce larger yolks!