Practical Study Guide: Poultry Diseases
This reading companion discusses Poultry Diseases. Use a structured reading guide to plan practical application of the source material. It is derived from text extracted from the original document and is intended as a guided overview, not a replacement for its full pages.
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VIRAL DISEASES
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New Castle Disease Treatment and Prevention It is one of the most dreaded diseases of poultry Effective vaccines are available for prevention. F as it can cause very heavy mortality at a very high speed. vaccine given at the day old stage followed by RDK vac The disease is caused by a virus of paramyxo group and cine at 2 months can protect the bird. classified into many serotypes based on the virulence. Chicken is the natural host but vast majority of birds are Infectious Bronchitis susceptible to infection including ducks and turkey . It is…
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VIRAL DISEASES 2
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There are different serotypes of IB virus and many Nervous signs like in coordination, twitching of strains continue to evolve. neck Signs Mortality heavy in acute outbreak • Respiratory signs like coughing, sneezing and rales in chicks Drop in egg productionand hatchability Production of deformed, thin shelled, rough eggs with low internal egg quality Mortality low in uncomplicated cases CDIO, Palode Greenish diarrhoea Post Mortem Lesions Pin pointed hemorrhages at the tip of proventricular glands Hemorrhagic/ diphtheritic ulcers on the…
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VIRAL DISEASES 3
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Laboratory diag Infectious Bursal Disease (Gumboro Disease) nosis with hemagglutination and Inhibition tests can be Infectious Bursal Disease(IBD) is a highly conta employed. gious viral disease of young chicken causing serious eco nomic losses. The virus targets the Bursa of Fabricius, an Prevention important part of immune system making the bird suscep- Vaccines are available for prevention. tible to other infections. Vaccination failures may happen Avian Influenza due to the associated immunosupression. Highly Pathogenic Avian…
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VIRAL DISEASES 4
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Hemorrhages in the thigh and pectoral muscles Signs Bursa enlarged, edematous and hyperemic with • Sudden, heavy and unusual mortality reaching bloody or mucoid contents inside. almost 100% without any clinical signs Bursa firm and atrophic in chronic form • Edema of face, cyanosis of comb and wattles in Kidney may show nephrosis and mottling less fulminating cases Nervous disorders like tremors, torticollis and opisthotonus Post mortem lesions Bursal Hemorrhage • Extremely variable depending on the severity Hemorrhagic lesions (petechial to…
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VIRAL DISEASES 5
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Signs Diagnosis • Nodular lesions on comb, wattles, eyelids and Bursal lesions are characteristic. Age of the birds other non feathered areas of skin in cutaneous affected and muscular lesions help in diagnosis. form Mild respiratory signs after hatching Unthriftness and reduced production • Progressive ataxia and incordination Tremors of the head and neck become evident especially after exciting the chicks Mortality rate vary from outbreak to outbreak Post mortem lesions Post mortem lesions Nodular lesions on the non feathered areas • No…
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