Many diseases can be prevented by keeping your poultry house very clean
Overcrowding of birds can cause disease
Do not allow other poultry on to your farm (e.g. neighbour’s scavenging chickens)
Do not allow other poultry farmers to enter your shed
Place a foot bath with a disinfectant in it or limestone outside the door of your poultry house
Have a special pair of boots/shoes that you will use only when you are working in your poultry house
Leave sufficient time between batches of birds to clean the house and get rid of diseases that need to have a bird (host) to survive
Remove old litter, dirty bags and contaminated rubbish and dump them far away but in a responsible place that will not contaminate the environment
Discard damp, old feed. It can grow mould which can produce toxins. They can kill or make your chickens sick
All in-all out systems in which all birds are the same age help to reduce disease out breaks
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External parasites such as mites, lice and fleas can make your poultry feel uncomfortable. This will affect their growth rate and egg production
Insecticides are used to treat the infected birds. A dust bath will also help to reduce these external parasites
Internal parasites such as different worms and minute protozoa causing coccidiosis can be prevented by medication
This is done routinely by adding a coccidiostat to the mixed feed for broilers
Remove immediately sick birds and bury dead birds.
Never eat or sell sick birds; they will make your family and others ill
7.1 Newcastle disease
There are two diseases that are particularly dangerous in many low-income countries. Newcastle disease (ND) is endemic (always there) in many countries and becomes active particularly at the start of the wet season. It can wipe out entire village flocks although a few individual birds often do survive. There are now ND vaccines that will withstand the heat for a short period (thermostable) of time. Vaccination is most effective by eye drop and birds should be vaccinated a month before expected outbreaks by a trained person. There is also a need to treat the birds at intervals through out their life. This is a specialised area and the poultry keeper will need help from experts but it is well worth the effort and the vaccine is not expensive.
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7.2 Avian influenza
The H5N1 strain of highly pathogenic avian influenza (bird ’flu) is particularly dangerous not only because it can infect different poultry species and wild birds but it can also kill humans. Village poultry are especially at risk because they are outside and may be in contact with wild birds and other poultry species (ducks, geese). The disease spreads rapidly through the poultry flock.
The virus can be spread by eating infected birds and can kill the consumer particularly if she/he is young. Household poultry keepers should keep themselves informed about the situation in relation to bird ‘flu as it often appears at particular times in the year.
EXERCISE
What will you do to stop your chickens from getting sick? Make a short statement.
We will now discuss the two specialised areas of commercial (intensive) poultry production: broiler (meat) production first and then egg production.
[END OF UNIT III]
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UNIT IV
8. COMMERCIAL BROILER MEAT PRODUCTION
Chicken meat is very popular throughout the world. It is seen as a healthy meat low in fat and rich in protein (lean meat). It is a meal for a family so you don’t need a refrigerator
To prepare for the chicks’ arrival it is best that you have a time plan or schedule
the house will be thoroughly cleaned and disinfected
shavings or litter on the floor
the brooder surrounds in place
the brooder heater checked and adjusted (if there is one)
feeders and drinkers in place. Chicks usually look for water first.
a supply of a small amount of starter feed is scattered on paper on the floor of the brooder so that the chicks can
