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.
White eggs are laid by white-feathered hens.
0 A4 ]. S" i/ U; Q; H# S1 \These are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
5 U( ]+ `) H9 r. W6 v3 l3 h; kBrown-feathered hens usually lay brown eggs.
. p' s: I4 P/ e3 u; }Producing brown eggs costs more because brown hens are larger than white ones and they eat more feed.

, p# s7 d0 y* [Young hens lay pee wee eggs and older hens lay jumbo eggs;
2 |. [/ P$ C+ g! Z( B  d
3 \5 M- X' @# C2 {, |# i  }' l$ CFree-run eggs are nutritionally the same as regular eggs.
' I+ x' ^) d, {, U, j+ v
7 }, k/ n+ ^1 ?/ S2 k: G2 hOrganic eggs are nutritionally the same as regular eggs.

Free-range eggs are nutritionally the same as regular eggs.
2 A- S4 F3 Q& r& j5 P- m, b+ L1 q
5 H# q$ L1 }7 x3 B
Here is articles:
http://www.getcracking.ca/EDU/a_guide_to_choosing_eggs.pdf