White or Brown eggs---There is no nutritional difference.

qiaohe

White or Brown: Eggshell colour is determined by the type of hen that lays it. There is no nutritional difference.
' J! y$ t- m) I% u( L( eWhite eggs are laid by white-feathered hens.
% g3 s2 `  f( [+ L5 Y# eThese are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
5 d8 X+ u; ]8 ~0 l; `Brown-feathered hens usually lay brown eggs.
$ b5 R) i" E) y5 K# C3 T+ g: zProducing brown eggs costs more because brown hens are larger than white ones and they eat more feed.

Young hens lay pee wee eggs and older hens lay jumbo eggs;

Free-run eggs are nutritionally the same as regular eggs.
8 V3 S) g- N, L: N* O
Organic eggs are nutritionally the same as regular eggs.

) H' J4 d* k0 oFree-range eggs are nutritionally the same as regular eggs.


Here is articles:
# i0 F; J" N# E; Mhttp://www.getcracking.ca/EDU/a_guide_to_choosing_eggs.pdf
- r% K( G% i+ u1 ?( `
+ O* I$ R+ w: w9 m# [4 g* C% v2 V