TAILIEUCHUNG - Small-scale chicken production - Part 4

7 Health care For good productivity and profitability, you should keep your chickens as healthy as possible. Sick chickens do not produce, and profits will be lost if you have to buy medicines or if your chickens die. Prevention is better than cure, so try to provide good housing, nutrition and health care for your chickens, and observe them daily for any abnormalities and disease symptoms. | 7 Health care For good productivity and profitability you should keep your chickens as healthy as possible. Sick chickens do not produce and profits will be lost if you have to buy medicines or if your chickens die. Prevention is better than cure so try to provide good housing nutrition and health care for your chickens and observe them daily for any abnormalities and disease symptoms. Some diseases can spread rapidly through a poultry flock so sick-looking birds should be housed separately and given extra care. Contact your veterinary or extension agent for information about common poultry diseases in your area and the availability of chicken vaccines. Infectious diseases and their causes Disease can occur in poultry of all ages and breeds. When birds look sick and or behave strangely see figure 27 there are many possible causes. A healthy chicken is active has bright eyes and scavenges for food. Unhealthy or sick birds are often less active with dull eyes and ruffled feathers. Sometimes you may observe abnormal breathing coughing swollen eyes abnormal digestion watery or bloody diarrhoea dirty feathers or locomotion disorders paralysis limping . Figure 27 Healthy and unhealthy chicken Poultry Network Health care 49 Sometimes you may notice that hens are laying fewer or abnormal eggs. Some diseases can cause high mortality rates figure 28 . Causes Infections are caused by germs. These microbes act as pathogens which means that they cause disease viruses causing . Newcastle Disease bird flu or avian influenza fowl pox and Gumboro disease bacteria causing . fowl cholera typhoid and pullo-rum disease fungi causing . Aspergillosis or brooder pneumonia. Figure 28 Some diseases can cause high mortality rates Of all the microbes only a few parasites are visible to the naked eye. All other germs can only be seen with special microscopes. Fungi or moulds can produce toxic substances called mycotoxins. If birds eat feed with mycotoxins their resistance may be .

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