Articular Urate Deposition ("Articu ...

Articular Urate Deposition ("Articular Gout") in Laying Hens

Articular Urate Deposition ("Articular Gout") in Laying Hens

Observed Clinical Signs Happenings

Visibly sick birds

  • Few visibly sick birds

Lameness or unusual movement incoordination ataxia

  • Locomotor problems
  • Lameness

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

  • In chronic cases, urate precipitates can also be observed in comb, wattles, trachea, etc
  • Not always

Body Parts (Neck, wings, breast, abdomen, shanks, legs, hock, feet, joints, vent, and skin)

  • Leg shifting
  • Inability to bend the toes
  • Joints enlarged and feet appear deformed
  • Deposit of urates around the joints, particularly those of the feet, hence the confusion with Bumblefoot disorder

Diet or Feed Changes

  • Recent formulation /diet
  • Another feed brand
  • Not always. In some instances and sometimes it is difficult to relate this disorder to the diet
  • Sometimes it is difficult to find a relationship with the diet or feed origin

Articular Urate Deposition ("Articular Gout") 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

 

  •  

 

Visibly sick birds

  •  

 

 

Few visibly sick birds

  •  

 

 

Many visibly sick birds

 

  •  

 

Flock behaviour activity change

 

  •  

 

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

 

  •  

 

* Sometimes has not been observed the  Head parts abnormalities yet or depend on the course time of the disease (Chronic cases)

*Sometimes has not been observed the Body parts abnormalities yet or depend on the course time of the disease

* Sometimes has not been observed the relationship between any feed or diet changes and the observed clinical happenings in a flock or several other flocks or different farms

 

 

Causing Agents
It is probably due to a metabolic defect in the secretion of urates by the kidney tubules. Genetics or High protein in the diet. It has been reproduced by feeding high-protein diets. It is tempting to infer that results from excessive production of uric acid. Studies in a line of chickens breed for high incidence of articular urate deposition. However, it indicates that it may have a defect in the tubular secretion of uric acid.
Affected Systems/Organs
Urinary System. Joints specially feet
Spread
N/A
Mainly Affects
Locomotor system
Solution
Therapy is only a palliative
Suggested Actions
  • Can be confirmed with clinical signs and gross lesions
  • Can be dealt with in house
  • Technical assistance recommended
  • Can be managed with feed additives, off-the-shelf medications
  • Diagnosis should be confirmed with rapid assays and/or a certified laboratory
  • Veterinary intervention is recommended

Impact on Egg quality

0

Impact on Liveability

2


Impact on Production

0

Overall Economic Impact

1



  1. Y.M. Saif.2008.Disease of Poultry. 12th Edition. 1177
  2. David E. Swayne. 2013.  Diseases of Poultry 13th Edition. page 1255

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