2. POULTRY BREEDS
There are many different breeds of chickens. We will only mention here those that have commercial potential (meat and/or eggs).
Dual Purpose. These are used to produce both meat and eggs such as Rhode Island Reds or Plymouth Rock.
Today, for large – scale commercial production they do not produce enough eggs
nor do they grow fast enough for meat production
they eat too much feed
they are not very efficient in converting feed to eggs and meat
Dual purpose breeds may have a role to play where it is not possible to get better breeds or conditions are not ideal or feed is not of the best quality
Special Breeds. These have been selected for egg production
the White Leghorn was very popular for many years
it has a small body (1.5 kg) and lays many white eggs
the Black Australorp is another popular breed
it is very docile (quiet) and lays a tinted (light brown) egg
it is medium-heavy body weight (2.2 kg) and therefore eats quite a lot of feed
it is good for free-range (out doors) conditions as it is not flighty
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Hybrids. In the commercial world today only hybrids (cross-breeds) selected for either meat or egg production (not both) are used. Because of hybrid vigour
they lay more eggs than special and dual purpose breeds
they lay large, brown or white eggs
they eat less feed per kg of weight gain for meat or per kg of eggs
the male chicks from hybrid layers grow very slowly and normally have to be killed. They are usually too expensive to rear but it depends on feed costs and circumstances
the hybrid broilers grow faster than pure breeds
they produce more meat especially breast meat than the pure breeds
Hybrid chicks are only available to the small farmer through a breeding company. The farmer will not have the parent breeding stock and therefore can not breed these chicks himself. Replacement pullets must be bought in but are not always available in remote areas.
3. POULTRY HOUSING
There are many reasons why poultry should have a well-constructed house
to protect them from floods, rain and the sun
to protect them from predators - dogs, cats, snakes, birds of prey, rats and thieves
to prevent mice, rats and other birds from eating their feed and transmitting disease
to give hens a safe place to lay their eggs
You must protect your chickens from predators
What are the basic requirements for a poultry house?
It must be
rain proof
protect the birds from direct sunlight and keep them cool
must have good drainage around the house
easy to clean
have a strong door with a secure lock
Chickens must be protected from the weather
Housing will likely be your biggest investment and to cut
Costs, local material can be used. Positioning of the
house is important to conform to some of the basic requirements (mentioned above). High ground will stop flooding in rain storms
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Sketches of a simple poultry house for keeping about 250 broiler chickens or 120 laying hens on the floor (barn system)
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3.1 Floor
The floor must be:
flat and smooth and easy to clean
have a good depth of litter cover (sawdust, shavings, dried grass, leaves, chopped straw, rice hulls, crushed coffee hulls, peanut hulls)
3.1.1 Litter
should be raked weekly
changed every two batches of meat birds or every batch of layers
makes excellent fertiliser for your garden
makes an excellent compost when mixed with leaves, grass, vegetable waste etc
Fresh poultry manure must be stored for a few months, otherwise it might burn plants.
Adequate floor space for birds is most important particularly in regions where it is always hot. If they are too crowded broilers will not grow well
Remove manure from empty house and replace with clean litter
4. EQUIPMENT
4.1 Drinkers
Give your birds, clean, fresh water. You can make your own drinkers or buy them.
They must be adjusted to the correct height so that birds can drink easily.
4.2 Feeders
Poultry must have continual access to feed in properly-adjusted feeders, otherwise they will not grow or lay well. These can also be made from local material, or purchased.
Feeders must always have a lid to stop birds from entering the feeder
An inexpensive spring balance for weighing birds, feed, eggs and other things, you will find to be very useful.
[Unit II. Trainees will now visit the demonstration site to discuss the poultry house and how much a similarly equipped house will cost and what improvements/changes could be made. Use of old litter to make compost or to spread on the garden will also be discussed]
End of Unit II
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UNIT III
5. BROODING
This is a term which means, keeping chicks warm and comfortable.
When your baby chicks arrive they will need special care. This is the time when you can expect a few chicks to die. In tropical countries it may not be necessary to provide extra heat during the day but only at night and then only for the first 10 days.
Dead chicks should be removed and buried in a hole in the ground. Sick and weak chicks should be kept separately and given special care
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Chicks should be given water immediately and some may need to be shown how to drink
Electricity may be unreliable or unavailable and a small kerosene lamp can provide heat
Weak chicks need to be watched carefully. They rarely survive. Often it is better to get rid of them
The chicks are placed in a brooder made from cardboard or woven bamboo, leaves or grass
It may be necessary to provide extra heat only during the night
Chicken brooder
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A cold-box brooder can be used but only for up to 50 chicks. It needs no heat source. The chicks keep each other warm in an insulated box. This box will be especially useful in warm countries for brooding at night. The brooding compartment is surrounded with straw or dried grass for insulation. The other compartment is for a feeder and drinker and a lid of wire mesh to let in the light and protect the chicks. The lid over the brooding area is insulated (e.g. polystyrene)
6. FEEDING
Feed is 60-70% of the costs of producing commercial poultry.
Feed is the major constraint (difficulty) to producing poultry in developing countries
Compounded (mixed) feed is expensive. There may be no feed mill and mixed feed is not readily available in many regions.
Feed may have to come a long distance and probably will be very expensive and unreliable so you have to order well in advance.
Often, only very few suitable ingredients (feedstuffs) are produced in the country and most are imported.
Fish meal (rarely) or fish waste, also palm kernel meal, brewery waste, copra meal, wheat bran and rice bran, broken rice may be available. But these are largely inadequate for formulating a high – quality, commercial poultry diet especially for broilers
Feed ingredients are mixed according to a special recipe to provide a balanced diet
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Baby chicks need a feed of the highest quality. That is one that is especially high in good quality protein (e.g. soybean meal, fishmeal) to match the protein found in meat and eggs
Chicks also need a source of feed energy (wheat bran, cassava, cereal grains) to make them grow well
Chicks also need other nutrients (minerals and vitamins) but only in small amounts
A specialist person formulates (puts together) diets suitable for chickens. That person should also give you good advice on what to and how to feed your poultry
If some feedstuffs are available locally, farmers who receive the right advice may want to mix their own ingredients
First there is a need to get in a stock of the raw materials (ingredients). You will need to weigh out the ingredients or have containers which will hold known weights of different feedstuffs
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The feedstuffs must be thoroughly mixed with a shovel or in a home-made mixer. It can be made from a drum. Also a cement mixer can be used.
Do not store your feed for too long
Weevils will quickly destroy your feed
Ingredients and the mixed feed must be stored in a dry place and safe from birds and rats
6.1 Choice feeding
Sometimes it is better to let the birds select their own feed and balance their diet themselves. This is called choice feeding or self-selection. Feed ingredients are not mixed together but are placed in separate feeders (about 3) and the chickens in this way make a choice. There are only certain situations where this can be done, usually when the birds are on the ground or the floor.
Sometimes a grain balancer ration is available from the feed mill. This special feed (high in protein) will allow local ingredients to be used and the balancer meets those
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nutrients that are still deficient in the locally - available ingredients. This allows the birds to select a complete diet.
7. HEALTH AND DISEASE PREVENTION
Chickens are fragile and can get sick very easily especially when young
There are two major sources of disease.
Diet if not correctly formulated can result in the bird getting a metabolic disease due to a nutrient deficiency (vitamins or minerals) in the diet
Other diseases are caused by minute organisms called bacteria and viruses. It is often necessary to treat the chicks as soon as they hatch with a vaccine which allows them to resist the disease if it occurs. This is normally done at the hatchery. Newcastle disease is present in many countries and chickens need to be vaccinated more than once (see section 7.1)
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Remember that “prevention is better than cure!”
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.
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 start to eat
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For the first 7-10 days the chicks will be brooded (see section 5.) Broiler chickens can grow very fast but only when well looked after and given good feed
After 3 weeks of age when the house temperature is less than 28–30 oC they grow best. In the tropics, the temperature is normally above 30 oC in the day time so they will grow a bit slower than usual
Some chickens will die in the first week particularly those that are small and weak. You must remove and bury them immediately
You can expect to lose at least 4 - 5 chicks out of 100 in the first 3 weeks. Another 2 may die later. Mortality can be much higher especially if management and housing conditions are poor. Some broilers, as they get older, may become lame and are unable to walk and get to the feeders. This is partly a breeding problem but may be reduced by slowing growth in the second week for about a week by limiting feed intake.
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Ideally, chicks should be given a bought formulated diet. A commercial starter diet should be purchased and fed for at least the first 10 days because they need to get off to a good start
They will have eaten only about 250 g of feed during this time. This will cost you less than 25 ¢/bird
A grower diet will then be introduced by mixing what remains of the starter diet with the same amount of the grower diet. This will mean that they can adjust easily to the new feed
When the mixture is finished, chicks will be on the grower feed only
Check chicks several times a day to see that they are comfortable and have feed and water
Check your chickens frequently. They do not like it too warm.
It will be helpful if you have weighing scales so that you can weigh feed given to the chickens and get the live weight of a sample of 10 birds every 2 weeks caught with a simple leg catcher. This will tell you how well your chickens are performing
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Do your birds reach targets at 3 weeks and 6-7 weeks? This should be your marketing age range for best growth and feed consumption?
Weight gain is weight of bird divided by age in days then divided by the total number of birds to obtain the average weight gain of one bird
Feed efficiency is feed consumed (kg) during a fixed number of days divided by the total weight of all birds (kg) consuming that amount of feed
As a guide, the average weight of your chickens at 6 weeks should be 1600 g and at 7 weeks 1750 g
Feed efficiency should be under 2.5 kg feed for 1 kg of weight gain at 7 weeks of age [a worked example of these calculation is given at the back of the manual]
Although your chickens look healthy you must still inspect them several times a day. You do not want to lose any. They are now becoming valuable and attractive to a thief
8.1 Marketing
