tailieunhanh - Application of disinfectants in poultry hatcheries

In recent history, H5N1 first appeared in 1997 in Hong Kong’s wet markets (live bird markets) and chicken farms. Its spread was contained in Hong Kong at that point following the culling of all poultry in the region. In 2003 the same virus resurfaced - suggesting it had never been eradicated - and spread relentlessly across East Asia, decimating the poultry population. In 2005, an outbreak in migratory wild birds in Qinghai Lake, China killed 6000 birds (Normile 2006b). The virus has since spread across countries in Asia, Europe, the Middle East, as well as some African countries. It has. | Rev. sci. tech. Off. bit. Epiz. 1995 14 2 365-380 Application of disinfectants in poultry hatcheries Y. SAMBERG and M. MEROZ Summary Veterinary control and routine sanitary procedures in commercial poultry hatcheries should include the following - choice of a suitable geographical location to ensure an isolated site - proper hatchery design with separation of major operations - one-way flow of work within the hatchery - adequate ventilation of each room - routine cleaning and disinfection - formaldehyde fumigation or alternative method for disinfection of eggs equipment and incubators - a routine programme for monitoring microbial contamination levels within the hatchery. KEYWORDS Cleaning - Contamination - Design - Disinfection -Hatcheries - Hygiene - Monitoring - Work flow. INTRODUCTION Hygiene is an important aspect of hatchery design and management. Good hygiene is required for maximum hatching rates and chick quality. The protection from contamination of hatching eggs and day-old chicks or poults particularly in the light of specific disease controls . those concerning Salmonella is becoming increasingly relevant in the operation of hatcheries. Protection of the workforce from contamination is also becoming a more prominent concern. With the progressive development of the poultry industry within a country hatcheries become larger in size and many operate continuously throughout the year. This situation is the result of the large increases in the number of eggs set for incubation and hatched. To meet demand and utilise expensive equipment more economically more than one hatching per week may be planned. The marked increase in output of day-old chicks necessitates a corresponding increase in related services and operations. These services include the movement of personnel and vehicles within and around the hatchery building. All these factors demand precise planning of hatchery operations to ensure maximum sanitary standards. The work flow implicit in .