This aspect of poultry management must receive constant, close attention. Failure to maintain a high standard of disease prevention will usually result into unhealthy flock.
The basis of poultry health management is:
1. The isolation
of the flock from disease causing organisms – quarantine, including fencing,
restricting movement in and out, avoiding any attractants of wild birds,
avoiding domesticated local and ornamental birds etc.
2. The destruction
of as many harmful organisms as possible – hygiene. Including use of tyre baths
that have a strong disinfectant, footbaths with a strong disinfectant, misting
the poultry house, portioning the farm into a buffer and clean area, etc.
3. The use of an
appropriate vaccination program – trigger the birds’ immune system. And after
vaccination;
4. The use of
appropriate preventive medication programs – for diseases for which there are
no vaccines. Avoid dusty litter, create enough ventilation, avoid spillage of
feed and water, avoid caked litter, avoid ammonia smell in the house, remove
cage litter every after 3 to 5 days.
5. The use of a
suitable monitoring program – to monitor for the presence of disease organisms
and the success or failure of the hygiene program or the vaccination program. This
should include a weekly farm visit by a good veterinarian, farm visit reports
showing key areas where to improve, and treatment plans if there's disease.
Quarantine
The principle need is to maintain control over the means of entry by
disease causing organisms. These may enter by several routes:
1. Poultry
Introducing stock as day old chickens is considered to be the lowest
risk method of restocking a poultry farm. Older birds are more likely to be
diseased, at least carriers if not showing signs. Be careful when buying old
birds on the road side, from other farms, or buying from a farmer who has
failed to keep them!
2. Wild Birds/Other
Animals
These often carry the causes of disease and are likely to fly or
move from one poultry farm to another if the farms are close enough. The best
way to prevent this is to ensure a suitable distance between farms and a
minimum of 5km is recommended. A security fence 2 metres high and with a
controlled entry gate should surround the poultry farm and all sheds should be protected
from entry by wild birds and all other animals by secure "small eyed wire
netting."
3. Wind
Insects and dust carried on the wind from infected to clean farms
may also carry the causal organisms of infectious disease. The best method to
prevent this is to ensure that adequate distance i.e. a minimum of 5km
separating one farm or section from another. This distance is influenced by the
direction of the prevailing wind – insects and dust travel further with the
wind than against it, and the presence or absence of barriers in the form of
Hill.
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