Asphyxiation or Smothering or Pilin ...

Asphyxiation or Smothering or Piling up Birds in Laying Hens

Asphyxiation or Smothering or Piling up Birds in Laying Hens

Asphyxiation is generally caused by birds crowding or piling in a corner or in a spot for laying eggs in the same place. It may occur when birds are moved to new quarters, when they are frightened. Asphyxiation also happens when power fails or ventilation system is faulty in controlled-environment houses that have no windows.

Observed Clinical Signs Happenings

Mortality

  • High mortality or increases rapidly
  • Sudden high mortality

Dead birds

  • Good  body fleshing condition (sudden high mortality)

Flock behaviour activity change

  • Increase flock mobility or activity
  • Birds crowing or pilling up in a corner
  • Birds are moved to new quarters. Birds are crowing or pilling up
  • Birds are frightened

 Asphyxiation or Smothering or Piling up Birds in Laying Hens DOES NOT exhibit or manifest any of the following clinical signs happenings:

  1. Egg drop
  2. Low mortality or increases gradually
  3. Dead birds: Skinny body (Poor body fleshing condition)
  4. Visibly sick birds
  5. Decreased flock mobility or activity
  6. Droppings abnormalities
  7. Respiratory abnormalities
  8. Neurological Nervous
  9. Lameness or unusual movements, incoordination, ataxia
  10. Eyes abnormalities
  11. Head, Comb, Wattles, Face, Nostrils, Sinuses, Mount, Beak, Ear lobes, abnormalities (except eyes)
  12. Body Parts (Neck, wings, breast, abdomen, shanks, legs, hocks, feet, joints, vent, and skin, abnormalities), skinny body, retarded growth, weight depression
  13. Feathers abnormalities
  14. Feed Consumption Changes
  15. Diet or Feed Changes (Recent Feed delivery, Recent formulation /diet, Other silo or improper storage, Other feed brand)
  16. Shell quality defects
  17. Internal Egg defects

DDX

Not sure about Flock behaviour activity change, then rule out the following disorders:

Causing Agents
Husbandry related. Hysteria or Piling up of birds in response to noise, predators, lights and moved to new premises or quarters amongst other factors. Crowding of birds trying to lay in the same spot. Power fails power fails or ventilation system is faulty in controlled-environment houses that have no windows.
Affected Systems/Organs
Respiratory System (Asphyxiation)
Spread
None.
Mainly Affects
Liveability
Solution
Appropriate management and husbandry practices. Increased vigilance when birds are moved to new housing. Some panics may be caused by inputs that mimic predators while others may be novel stimuli. When birds are moved to new quarters, the use of a dim light or lantern the first few nights will decrease the possibility of smothering.
Suggested Actions
  • Can be confirmed with clinical signs and gross lesions
  • Can be dealt with in house
  • Technical assistance recommended

Impact on Egg quality

0

Impact on Liveability

2


Impact on Production

0

Overall Economic Impact

2



David E. Swayne. 2013.  Diseases of Poultry 13th Edition. page 1234

Y.M. Saif.2008.Disease of Poultry. 12th Edition. page 1150

Mark Pattison, Paul F. McMullin, Janet M. Bradbury. Dennis J. Alexander. 2008. Poultry Diseases. 6th Edition. page 539

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