No other single food of animal origin is eaten by so many people
all over the world compared with the egg and none is served
in such a variety of ways (Surai & Sparks, 2001). Therefore, the
ability of the egg to be used as a functional food has been widely
investigated (Stadelman, 1999) because the egg composition
can be partly modified by changing the poultry feed (Lemahieu
et al., 2015; Vaghefi, 2003). The majority of research has investigated
the possibility of enriching eggs with fatty acids, vitamin
E, selenium and lutein, but very few evaluated other bioactive