Our pilot study showed that differences in eggs chemical composition between organically and conventionally reared hen eggs was significant. Differences were found in the content of vitamins, cholesterol, calcium and potassium. Several studies have found that egg content significantly depends on layers nutrition. Also, fodder ingredients are a very important reason why the chemical composition of eggs may vary. Therefore, because the organic and conventional farming systems are grounded on different feeding systems, it can be concluded that chemical composition of hen eggs might be affected by housing system. More detailed and comprehensive studies are needed to establish the impact of housing systems on egg quality as well as chemical composition