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High stocking density as a predisposing factor for necrotic enteritis in broiler chicks.

V Tsiouris1, I Georgopoulou, C Batzios

  • 1a Unit of Avian Medicine, Faculty of Health Sciences, School of Veterinary Medicine , Aristotle University of Thessaloniki , Thessaloniki , Greece.

Avian Pathology : Journal of the W.V.P.A
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High stocking density in broiler chicks predisposes them to necrotic enteritis. This management factor negatively impacts gut health and welfare, increasing disease susceptibility in the poultry industry.

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Area of Science:

  • Poultry Science
  • Animal Health
  • Veterinary Medicine

Background:

  • Stocking density is a critical management factor in the poultry industry.
  • High stocking density can negatively impact animal welfare and health.
  • Necrotic enteritis is a significant disease affecting broiler chickens.

Purpose of the Study:

  • To investigate the effect of high stocking density as a predisposing factor for necrotic enteritis in broiler chicks.
  • To evaluate the interaction between stocking density and a challenge model for necrotic enteritis.

Main Methods:

  • An experimental model using 240 broiler chicks was established.
  • Chicks were subjected to normal (15 birds/m²) or high (30 birds/m²) stocking densities.
  • A challenge model involved oral inoculation with an anticoccidial vaccine and Clostridium perfringens.

Main Results:

  • Significant interaction between stocking density and challenge was observed for gross lesion scores, intestinal pH, and C. perfringens counts.
  • High stocking density exacerbated intestinal gross lesions in challenged birds.
  • pH values in the jejunum, ileum, and caeca were affected by stocking density and challenge.

Conclusions:

  • High stocking density unfavorably affects broiler chick welfare and gut health.
  • Increased stocking density predisposes broiler chicks to necrotic enteritis in a subclinical model.
  • Stocking density is an important management factor to control necrotic enteritis in poultry.