Disease is a major hazard in poultry rearing, particularly with the growth in numbers of large scale processing enterprises. Hygiene is a most important factor in disease prevention. Efficient cleaning can eliminate over 90% of all diseases and there are other measures which can be taken to prevent disease and its spread among the flock. These are given in Chapter 4.
Preslaughter inspection
Whereas it is not practical to expect a veterinarian to examine each bird on the farm before it leaves for the poultry processing plant, it is the producers responsibility to ensure that the birds are healthy as far as the producer can tell. Sick birds should not be sent for slaughter. They should be disposed of at the farm under veterinary supervision if possible. The circumstances of the sickness should always be reported to the veterinarian.
Vehicle and transport hygiene (including cages)
Transportation of live birds to the slaughterhouse involves the possibility of contamination, especially if cleaning and disinfection is insufficient and the same cages are used for several different flocks. There are several precautions that should be taken regarding vehicle and transport hygiene. Cleaning and disinfection of cages should be carried out after use and if cages are not used for some time then the process should be repeated as contamination may occur in storage. The vehicles which carry the modules or cages should also be cleaned and disinfected after use.
Personal cleanliness and habits
Good personal cleanliness and habits are of the utmost importance in maintaining high standards of hygiene in a poultry processing operation. Staff are involved at all stages of processing and the provision of cleaning facilities and materials together with a policy of staff training in hygienic practices will form the basis for achieving high standards of hygiene.