Studies on the Epidemiological Status Of Native and Developed One-Day-Old Chicks to Some Poultry Diseases

Abstract

Poultry are kept throughout the world and their economic significance varies considerably, although poultry production in many·countries has become increasingly specialized and integrated into a dynamic industry of major national and international importance. During the past 25 years total world egg production has doubled and poultry meat consumption has trebled. During the past few years there has been some decline in egg consumption in developed countries (Richardson, 1988) and the size of poultry industry has been made possible by the introduction of iritensive production systems utilizing new technologies . Successful disease control has been a necessary corollary to the efficiency of such systems. Thus recognition, treatment or . prevention of disease is of crucial importance and the subject of much investigation and · research, in general there is a greater incidence of infectious disease in developing countries, where \v management systems are often less intensive and less controlled (Sainsbury, 1992 ). Infections with bacteria of the genus salmonella are responsible for a variety of acute and chronic diseases in poultry. Infected poultry, moreover· comprise one of the most important reservoirs of Salmonellae that can be transmitted through the food chain to humans. Isolation of Salmonellae are reported more often from poultry and poultry products than from'any animal species. 54l l