One of the major problems of the broiler industry is the prevalence of infectious diseases caused by bacteria, viruses, mycoplasma, and parasites. Moreover, the industry suffers from recent health problems such as losses from feed containing mycotoxin and non-infectious diseases such as sudden death syndrome (SDS), ascites, and leg disorders which affect chickens with the more rapid growth rate. To minimize and control the current poultry diseases, the use of effective vaccines, antimicrobial agents, extensive health management systems, and continuous research are highly recommended.