Navid Morgh Guilan Co. transfers some of its one-day-old broiler chicks to broiler chicken farms to complete the production chain. In these farms, chickens are reared to achieve the desired weight and during this period, the technical and sanitary experts evaluate broiler farms at various stages in order to efficiency increase and ensuring health status. Hence, considering the antibiotics disadvantages in the poultry industry (body resistance increase against antibiotics and drug-resistant disease prevalence), the chickens’ production without antibiotics is one of the most important goals of the Navid Morgh Guilan Co.