Kidney-related disorders are an often underestimated challenge in modern poultry production. While not always immediately visible, impaired renal function can significantly affect performance, flock uniformity, and overall production stability. In many cases, renal stress develops gradually and may already affect performance before clear clinical signs such as visceral gout or urate deposits become apparent.

Kidney function as a limiting factor in performance

The kidneys play a central role in maintaining water and electrolyte balance, excreting metabolic waste (e.g. uric acid), and regulating acid-base equilibrium. Even moderate impairment can therefore lead to:

  • Reduced feed intake and impaired feed conversion
  • Slower growth performance
  • Reduced flock uniformity
  • Increased mortality rates

In high-performance production systems, even small disturbances in renal function can translate into measurable performance losses.

Common drivers of renal stress

In practice, kidney stress is usually multifactorial and linked to common production challenges:

  • Heat stress, increasing dehydration and metabolic load
  • Mycotoxins, with direct nephrotoxic effects, even at subclinical levels
  • Infectious diseases, including nephropathogenic infectious bronchitis (IB), where mortality rates of approximately 5–25% have been reported¹, and chicken astrovirus (CAstV), with gout-associated outbreaks reaching up to ~40% mortality²
  • Treatment phases, including antibiotic and other therapeutic interventions, which may impose additional metabolic burden on renal function

Supporting kidney function under production stress

Even under well-managed conditions, periods of increased renal stress cannot always be avoided. During these phases, targeted support of kidney function can help stabilize birds and maintain performance.

Key objectives include:

  • Maintaining water and electrolyte balance
  • Supporting urine dilution and excretion
  • Stimulating water intake
  • Stabilizing animals during metabolic stress

Practical relevance demonstrated in an XVET field trial under commercial broiler conditions in Iran

poultry kidney health, poultry production, renal stress, Renal Cleaner, broiler performance

Trial setup:

  • 20,000 broilers, 46-day production cycle
  • Two houses (10,000 birds each) under identical management and nutrition
  • Control group: standard management, including antibiotic treatment (Doxycycline) during the cycle
  • Treatment group: Renal Cleaner administered via drinking water (1 ml/L, twice weekly from day 10)

Results:

  • +172 g higher final body weight in the treatment group
  • No antibiotic treatment required in the treatment group, while the control group received antibiotic intervention during the cycle

Conclusion: from hidden challenge to performance lever

Kidney health is rarely the primary focus in poultry production, yet it can act as a hidden limiting factor. Addressing renal stress proactively helps maintain performance, improve flock uniformity, and reduce unexpected setbacks, especially under challenging field conditions. Targeted kidney support therefore represents a practical and effective tool to stabilize production and support consistent performance.

Essential Insights

  • Kidney health is a hidden driver of poultry performance, often affected before visible signs appear.
  • Even mild renal stress can reduce growth, feed efficiency, and flock uniformity.
  • Renal stress is multifactorial, commonly linked to heat stress, mycotoxins, diseases, and treatments.
  • Subclinical kidney dysfunction can lead to measurable economic losses in high-performance systems.
  • Supporting kidney function helps maintain balance, stabilize birds, and sustain performance.
  • Field data shows kidney support can improve body weight and reduce antibiotic need.

References

1 Meulemans G, van den Berg TP. Nephropathogenic avian infectious bronchitis viruses. World’s Poultry Science Journal. 1998

2 Li, L.; Sun, M.; Zhang, Y.; Liao, M. A Review of the Emerging Poultry Visceral Gout Disease Linked to Avian Astrovirus Infection. Int. J. Mol. Sci. 2022

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