Ok, are you sure you want to know the truth?
I studied a degree in animal management over the previous 3 years and am now vegan! The way farmed animals are used, killed etc are barbaric and after seeing it I couldn't eat animal products anymore!
Chicks for the egg industry are bred so that they can be sexed by colour at hatching, they travel along conveyor belts and the male chicks are discarded.
Some, they lucky ones will go on to be gassed or frozen swiftly for animal feeds such as birds and reptiles, many more are simply tossed down a shoot and ground up ALIVE, and if anyone doesn't believe this just google it, the videos make gruesome watching. The resultant mince is then used as fertiliser.
In the meat industry, male chicks are quick grown along with the females and end up on your plate after about 36 days, slightly longer for free range, around 45 days.
So, I keep my own lovely chookies :) bantams and get a cpl eggs a week from them as they are getting on bless them, I am a new veggi/vegan, I am not a shove it down your throat "you must not eat xyz" but the truth is pretty awful!!