Livestock Water Sanitation

Sanitation for Livestock

cow-water

Water sanitation is essential for dairy cows and cattle

Low-quality water can result in decreased feed intake, reduced milk production and health issues, while also presenting a risk to the public health. Contaminated water, particularly from sources like biofilm, may contain pathogens, diminish the effectiveness of medications and adversely affect the overall health and productivity of the herd.

Impacts of Poor Water Quality 

  • Disease Transmission: Pathogens such as Salmonella and E. coli can easily proliferate in contaminated water sources or biofilms that develop within water lines and troughs. This can lead to health issues like scours (diarrhea) in calves and mastitis in cows. 
  • Reduced Water and Feed Intake: Water of poor quality, characterized by unpleasant tastes, odors, or high mineral levels (like iron or sulfur), can decrease water consumption. Consequently, this reduction in water intake negatively affects feed consumption, as water is crucial for normal rumen function and digestion. 
  • Decreased Production and Performance: Insufficient water intake can lead to lower milk yields, poor growth rates in young animals, and diminished feed efficiency. Given that milk is around 87% water, ensuring quality hydration is vital for optimal production. 
  • Reproductive Issues: High levels of contaminants such as nitrates and nitrites can result in reproductive failures, including difficulties with conception, early embryonic death, and miscarriages. 
  • Compromised Immune System: Ongoing exposure to infections and pollutants in water can weaken immune systems, increasing cows’ vulnerability to various infectious and metabolic diseases. 
  • Economic Losses: The health problems and reduced productivity linked to poor water quality can lead to higher veterinary and treatment costs, decreased profits from lower milk sales, and an increased likelihood of culling animals from the herd. 

water testing sampling graph

WATER SAMPLE COLLECTION RECOMMENDED PROCEDURES

Drip Sample

  1. Collect water samples in sealed, uncontaminated sample bottles.
  2. Label each bottle with the well number, barn number, line number, etc. This is important to be able to identify sampling locations when results are received.
  3. Wearing clean nitrile gloves, use an alcohol wipe to clean the nipple on the drinker line.
  4. Push up on the nipple and allow water to run for approximately 15 seconds. While the water is still flowing fill the bottle 3/4 of the way with the water sample, be careful not to touch the bottle rim or cap to any surface that could contaminate the sample
  5. Ensure the cap is tight and does not leak, place bottles in a cooler with an ice pack and deliver or ship to the lab.

Swab Sample

  1. Turn off the water supply to the drinker line or raise the end of the line to stop water flow.
  2. Detach the end cap/hose from the end of the drinker line and allow the line to drain completely.
  3. Label each swab tube with the well number, barn number, line number, etc. This is important to be able to identify sampling locations when results are received.
  4. Wearing clean nitrile gloves, use an alcohol wipe to clean the outside rim of the pipe on the drinker line where the threads are located.
  5. Unscrew the cap from the tube and press the swab sponge against the side of the vial to squeeze out excess moisture.
  6. Insert the swab two to three inches into the end of the pipe or the drinker line, twisting the tip several times as you pull it back out to be sure you are sampling as much of the pipe as possible. Be careful not to touch anything else with the sponge tip.
  7. Insert the swab back in the tube and screw tight.
  8. Place the swab tube in a cooler with an ice pack and deliver or ship to the lab within 24 hours of collection.

NOTE: If you will be taking both a drip and a swab sample, always collect the drip sample first and swab the same line and location.

For more information on water samples, contact your local VSI sales representative.  

Key Elements of a Water Sanitation Program

  1. Regular Cleaning and Maintenance
  • Frequency: It is essential to empty, scrub with a stiff brush and detergent, and rinse water troughs, cups, and tanks at least once a week to eliminate organic debris, fecal contamination, algae, and biofilm. 
  • Design Considerations: Provide ample watering space (3.5 to 4 inches of perimeter space per cow) and at least two watering locations per pen to minimize competition. Position waterers on a raised base to reduce manure contamination. 
  • Water Flow: Ensure a sufficient flow rate of about 10 gallons per minute to keep the water fresh and at an appropriate depth. 
  1. Water Quality Testing and Monitoring
  • Initial and Annual Testing: Assess new water sources initially and all sources annually for bacterial content (e.g., total coliform and E. coli), pH levels, total dissolved solids (TDS), and potentially harmful minerals/contaminants (e.g., iron, manganese, nitrates, sulfates). 
  • Sampling: Collect samples from the stream flowing into the trough rather than from pooled water, and return them to the lab within 24 hours for accurate results. 
  • Interpretation: Collaborate with a veterinarian or your VSI rep to analyze test results and pinpoint potential issues.  
  1. Disinfection Techniques
  • Sanitize Empty Troughs: After scrubbing, rinse the tank with a 10% bleach solution (1 part bleach, 9 parts water) and let it sit for 15 minutes. Then rinse twice with clean water before refilling
  • Delete the Continuous Disinfection bullet, there’s nothing there
  • Chorination: no notes on this bullet
  • Chlorine Dioxide: Effective biocide penetrates and eliminates biofilm in pipelines, troughs and tanks, functioning over a wide pH range.
  • Peracetic Acid/Hydrogen Peroxide: Serves as sanitizing agents when following product guidelines.
  • Copper Sulfate:  Helps control algae growth at a rate of 1.5 teaspoons per 1,000 gallons.
  • UV Sterilization: Chemical-free disinfection, utilizes ultraviolet light to eradicate microorganisms in the water supply. Does not remove particles or dissolved substances and should be paired with filtration.