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DISEASES OF POULTRY - Coggle Diagram

- - - - Tracheitis
      - Swollen head
    - - Layers
        
        ⬇ 🥚
      - Broilers
        
        Respiratory stridor
      - Poor growth, possible secondary collibaccillosis
- - - - Range Paralysis Form
        
        Unilateral leg paresis, ataxia. May recover
      - Grey opacity of iris
    - - Range Paralysis Form
        
        Swollen sciatic, vagal and brachial Nn. with loss of striations
      - Visceral Form
        
        Lymphoma nodules in parenchymatous organs
        
        Vaccine prevents this neoplastic transformation
- - - - Haemorrhage of Proventriculus + caecal tonsils + haemorrhagic tracheitis
      - Nasal mucous
    - - ⬇🥚 + soft shelled, white, watery albumin
      - Nervous Signs: Twisted neck + head bobbing
  - - - Depression, Huddling
      - Inappetance
      - Unsteady gait
      - Vent pecking, diarrhoea with urates (chalky)
      - Immunosuppresion -> secondary E coli
    - - Oedmatous / atrophied bursa, +- haemorrhagic. Contains jelly
      - Haemorrhage of skeletal muscle, esp thighs
      - Dehydration
      - Swollen kidneys with urates
      - Proventricular haemorrhage
      - Secondary E coli -> serofibrinous polyserositis
- - - - Negative PM
    - - Petechial haemorrhage of caecal tonsils, epicardium, fat, muscle
      - Red discolouration of shanks due to ecchymoses
- - - - Eimeria acervulina
        
        Zebra stripes on duodenum -> interfere with absorption -> poor growth
      - Eimeria maxima
        
        Petechiation of Midgut (Jejunum)
    - - Eimeria necatrix
        
        haemorrhagic dysentery, red foci of midgut
      - Eimeria tenella 💀
        
        Peaks at D28
        
        Necrohaemorrhagic typhlitis (Thickened caecal wall with core of cellular debris and oocysts)
        
        Anaemia
    - - ⬇ growth, ⬇ feed + water consumption, diarrhoea, 💀
      - +- blood spots on floor