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

Observed Clinical Signs Happenings

Mortality

  • High mortality or increases rapidly
  • Sudden high mortality
  • Asphyxiation is generally caused by birds crowding or piling in a corner or in a spot for laying eggs in the same place

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 show, exhibit, or manifest any of the following clinical signs happenings:

Observed Clinical Signs Happenings

ALWAYS

NEVER

SOMETIMES

Egg drop

 

  •  

 

Mortality above the standard

  •  

 

 

Low mortality or increases gradually

  •  

 

  •  

High mortality or increases rapidly

  •  

 

  •  

Dead birds

  •  

 

 

Dead birds in Good bodily condition

  •  

 

 

Dead birds in Poor bodily  condition

 

  •  

 

Visibly sick birds

  •  

 

 

Flock behaviour activity change

  •  

 

 

Decreased flock mobility or activity

 

  •  

 

Increase flock mobility or activity

  •  

 

 

Droppings abnormalities

 

  •  

 

Respiratory abnormalities

 

  •  

 

Neurological Nervous

 

  •  

 

Lameness or unusual movements, incoordination, reluctance to move

 

  •  

 

Eyes abnormalities

 

  •  

 

Head: Comb Wattles Face Nostrils Sinuses Mount Beak Earlobes (except eyes)

 

  •  

 

Body Parts (Neck, wings, breast, abdomen, shanks, legs, hocks, feet, joints, vent, and skin, abnormalities), skinny body, retarded growth, weight depression

 

  •  

 

Feathers abnormalities

 

  •  

 

Feed Consumption Changes

 

  •  

 

Diet or Feed Changes (Recent Feed delivery, Recent formulation /diet, Other silo or improper storage, another feed brand)

 

  •  

 

Shell quality

 

  •  

 

Internal Egg quality

 

  •  

 

* Sudden and high mortality may occur when birds are moved to new quarters and also may happen when power fails or ventilation system is faulty in controlled-environmental houses that have no windows

 

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



  1. David E. Swayne. 2013.  Diseases of Poultry 13th Edition. page 1234
  2. Y.M. Saif.2008.Disease of Poultry. 12th Edition. page 1150
  3. Mark Pattison, Paul F. McMullin, Janet M. Bradbury. Dennis J. Alexander. 2008. Poultry Diseases. 6th Edition. page 539

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