I don't think that yolk size should have much to do with the "scrambling" effect of shipping. My thought is that the overall structure of the egg is better. The cell structure is better, the membranes and choryzae are stronger. No matter what the reason, it "seems" as though eggs from flocks who receive FF have better hatchability. I'm not willing to take my girls off of their FF for the sake of an experiment, but, if I do hatch this spring, and am able to get eggs from a neighboring flock with similar husbandry practices barring the difference of FF, I'd do a side by side incubation. I encourage other folks who are hatching to undertake the same study. Do a comparison of similar sized eggs: FF vs standard feed. Of course, that's not a complete study. To be a perfect study, you'd have to take sibling groups, and put one on FF while keeping the other on standard feed. If anyone does experiment with FF vs standard feed hatchability, please set up a dedicated thread. Thanks.An interesting note on that point...
Leigh (@Bulldogma who started this thread) sells hatching eggs for sfh and ships all over the country. SFH shipped eggs are notorious for having a very poor hatch rate...sometimes 1 out of 12 the hatch rate is so bad on the shipped eggs.
Leigh's eggs - from a ff fed flock that is fed regular bagged feed off the shelf - have an incredible hatch rate. So much so that folks seek out her hatching eggs since they have such a poor hatch rate from other's eggs.
She attributes that to husbandry and ff.
Now...would it stand to reason that if the yolk is taking up more of the insides of the shell, that it may not get as "scrambled" in a shipping situation as an egg that has a smaller yolk?
Edited to fix a spell error.
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