Quote:
Originally Posted by
sunnyllama 
Also, for those of you using a soy free, what have you noticed with egg production?
I have no comparison, because my hens were raised from day one on soy-free feed (Countryside Organics).
Here are the facts, alone. You and other are welcome to interpret them as you will!
I keep detailed records on who lays what every day. I'm fortunate that I can tell all of my hen's eggs apart.
Facts:
6 hens, one year old as of this week.
Breeds: 2 plymouth barred rocks, 2 faverolles, 1 sex link, 1 australorp (hatchery stock)
Currently laying an average of 33.5 eggs per week, total. That comes out to an average of 5.5 eggs per hen per week.
Beyond the above, the rest is of course anecdotal. I am not a scientist, and this is hardly a study. But if you are curious, read on.
Now, laying rate is very dependent on a number of factors, which include but are not limited to: Age, Breed, Genetics, Photo-period (amount of light in a 24 hour cycle), stress/conditions, and diet of course. Can I attribute my laying rate to soy free alone? Of course not!! Only long term observations on many, many chickens will allow me to get any idea if soy is helping, hindering, or having a neutral impact on laying rate. I will be curious to see if my girls lay for longer than 'average' or (more importantly, to me) if they have longer life spans. Again, though, there are too many factors and variables to pin this relationship to the consumption or lack of consumption of soy. In reality I hope that the lack of GMO soy in my feed is only one of many factors that help them to lead long lives.
I can tell you that in my opinion, my eggs do taste richer and 'stronger' than the ones of family friends that raise chickens on soy-based products (to note: both my chickens and theirs also have access to free range in a weedy countryside setting). It's enough to notice, but it's not a mind-blowing difference in taste. I would hesitantly say that flavor alone is not that much more amazing that I'd be swayed onto soy-free for that reason alone.
I cannot say if I think soy has any impact on egg production, one way or another. There are too many other variables.