Calcium Tetany

calendar icon 22 March 2019
clock icon 2 minute read


A metabolic disease of chickens, especially broiler parents. Predisposing factors include heat stress with reduced feed intake and panting.


  • Paralysis.
  • Death from respiratory and cardiac failure.

Post-mortem lesions

  • Cyanosis.
  • Congested lungs.
  • Active ovary with egg in oviduct.


This is made on signs, lesions, lack of other significant lesions, and response to treatment. Differentiate from IB 793b, other acute infections and other causes of sudden death.


Provide 5 gm of oyster shell per hen on 3 successive days along with vitamin D in drinking water.


Keep pullet flocks on low calcium diet until 5% production hen/day, managing birds for maximum uniformity.

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