Overview
Water quality plays a direct role in poultry health, yet it is often treated as a secondary input behind feed and housing conditions. Microbial contamination in water systems, particularly within tanks and distribution lines, can contribute to increased mortality, reduced livability, and inefficient feed conversion.
This study evaluates the impact of chlorine dioxide treatment on poultry drinking water systems under real farm conditions, with a focus on microbial control and production outcomes.
Objective
The objective of this study was to determine how treated drinking water influences:
- Microbial load within water systems
- Bird mortality and livability
- Feed conversion efficiency
Testing was conducted across both brood and grow-out farm environments to capture performance across different production stages.
Materials and Methods
System Setup
Two poultry farms were equipped with a water treatment system consisting of:
- A 65-gallon treatment tank
- A Dosatron water-driven injection system
Treatment was applied directly to wells, storage tanks, and distribution lines at concentrations appropriate to each location.
Monitoring and Data Collection
Water samples were collected at defined intervals and analyzed for microbial presence using aerobic plate counts (CFU/mL) and coliform detection.
In parallel, bird performance metrics were tracked, including:
- Mortality rate
- Livability
- Feed conversion ratio
All results were compared against baseline performance using chlorine-treated water systems.
Results
Water Quality
Treatment resulted in substantial reductions in microbial contamination across all monitored points in the system.
- Greater than 99.99% reduction in aerobic bacteria at 1 ppm
- All treated storage tanks tested negative for living organisms following system implementation
- No coliform bacteria detected in treated water samples
- Multiple tanks recorded aerobic plate counts of zero
Lower concentrations (0.4–0.6 ppm) were sufficient to maintain water quality under typical conditions, while concentrations up to 1 ppm were effective under higher microbial loads.
Bird Health and Performance
Measured production metrics showed consistent improvement when compared to chlorine-treated systems:
- Mortality decreased from 1.4% to 1.1%
- Livability increased from 79.50% to 88.83%
- Feed conversion improved from 2.563 to 2.418
These changes indicate improved overall flock health and more efficient feed utilization.
Discussion
The results suggest that water system sanitation has a measurable impact on poultry production outcomes.
A primary factor is the control of biofilm within water lines and storage systems. Biofilm can act as a reservoir for pathogens, continuously reintroducing contamination into the system even when incoming water is relatively clean.
By reducing microbial load and stabilizing water quality, treated systems provide a more consistent and controlled intake environment for birds.
Notably, effective results were achieved at low concentrations, minimizing the need for aggressive chemical dosing or system modifications.
Summary
Across both brood and grow-out environments, drinking water treatment led to:
- Near elimination of microbial contamination in water systems
- Improved livability and reduced mortality
- Better feed conversion efficiency
These outcomes reinforce the role of water quality as a controllable variable in poultry production.