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.
) \1 u- j9 U& M) x, T$ |( SThese are the most common laying hens in Canada. White eggs are usually less expensive than brown eggs.
Brown-feathered hens usually lay brown eggs.
/ ^4 J' u, b2 V, G# yProducing brown eggs costs more because brown hens are larger than white ones and they eat more feed.

  b! }, @& {, CYoung hens lay pee wee eggs and older hens lay jumbo eggs;
) B3 ?% s$ n9 J7 X+ Q
) Q; R0 c" S6 j2 TFree-run eggs are nutritionally the same as regular eggs.
# O7 L- f. A/ V9 z' h
Organic eggs are nutritionally the same as regular eggs.
" F! h0 ]: _7 {  z7 x! a
Free-range eggs are nutritionally the same as regular eggs.
8 p+ d1 T$ _' {/ V7 f! D- G

1 a% p! x; r4 T' x: N& pHere is articles:
' |' z' b/ @2 q4 shttp://www.getcracking.ca/EDU/a_guide_to_choosing_eggs.pdf
" A" U5 V! `4 Z8 M4 a

; W# I% p# s) h) z, C6 n# b3 s