Production Systems Of Table-Egg Commercial Farms

This study was conducted to evaluate the productive and economic performance of three commercial layer strains (Hy-Line Brown Lohman Brown and Bovans Brown) kept under two different production systems (semi-closed and closed) in AL-Sharkia and AL-Gharbia governorates (in Egypt). Productive data were weekly obtained all over the production periods and analyzed to 52 weeks of production and also at the end of production cycles for each farm. While economical data were measured and analyzed at the end of production cycles after sealing the flocks.