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Related Experiment Videos

Turkey knockdown in successive flocks.

R D Evans1, R K Edson, K L Watkins

  • 1Elanco Animal Health, Greenfield, IN 46140, USA.

Avian Diseases
|September 28, 2000
PubMed
Summary
This summary is machine-generated.

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Turkey knockdown, a neuromuscular condition, affected three hen turkey flocks. Factors like water, vitamin E, and movement changes correlated with this condition, impacting bird mobility.

Area of Science:

  • Veterinary Pathology
  • Animal Science
  • Poultry Health

Background:

  • Turkey knockdown is a condition affecting the neuromuscular system, causing turkeys to be unable to stand or walk properly.
  • Previous studies have suggested various contributing factors including feed additives, management practices, and environmental stressors, but laboratory duplication has been unsuccessful.
  • This report details observations from a single farm experiencing multiple knockdown incidents within a year.

Purpose of the Study:

  • To investigate the occurrence of turkey knockdown on a commercial farm.
  • To identify potential correlations between environmental, management, and nutritional factors and the incidence of turkey knockdown.
  • To document clinical signs and histopathological findings associated with turkey knockdown.

Main Methods:

Related Experiment Videos

  • Clinical examination and postmortem evaluation of affected turkeys.
  • Histopathological assessment of muscle tissues from affected birds.
  • Correlation analysis of farm management practices, feed composition, water consumption, and vitamin E status with knockdown occurrence.

Main Results:

  • Three of five hen turkey flocks experienced knockdown between 6 weeks and 7 weeks of age.
  • Clinical signs included recumbency, paresis, and inability to vocalize. Histopathology revealed muscle degeneration, necrosis, and regeneration.
  • Changes in water consumption, vitamin E status, and movement between brooder and finisher stages were correlated with knockdown incidence.

Conclusions:

  • Turkey knockdown occurrence on this farm was associated with specific changes in water consumption, vitamin E status, and movement.
  • Further research is needed to elucidate the exact mechanisms and contributing factors for turkey knockdown.
  • Understanding these correlations may aid in developing preventative strategies for turkey flocks.