Lactic Acid Bacteria for Cattle Water Explained

Farm Learning with Tim Thompson | 10 February 2026 | Back to All Videos
What if your cattle water trough could improve gut health, clean itself, and support biodiversity even in a dry season?

In this video, we walk through how Lactic Acid Bacteria Serum (LABs) is brewed, dosed, and used on-farm to support healthier cattle and cleaner water.

Jackie shows exactly how she adds LAB serum to her cattle troughs, why it works, and how the microbes move from water to rumen to paddock supporting gut health, pasture recovery, and system resilience even in dry conditions when combined with long rotations and diverse pastures.

This is practical, low-cost biology that any livestock producer can make at home using simple ingredients like rice, milk, and molasses. No special equipment required.

In this video you’ll learn:
• What lactic acid bacteria serum (LABs) is
• Why it’s added to cattle water troughs
• Exact dosing rates and timing
• How LABs help clean troughs naturally
• How to brew a stable LAB serum step-by-step
• How microbes cycle through cattle and back into the paddock

This approach is especially relevant for:
• Grazing systems under drought pressure
• Long rotation and strip grazing systems
• Regenerative and biological farming operations
• Producers looking to reduce inputs and improve animal health naturally

If you’re interested in soil biology, rumen function, pasture diversity, and simple biological systems that stack benefits this one’s for you.

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00:00 Why add microbes to cattle water?
00:22 Dry conditions, long rotations, and feed resilience
01:10 What is LAB serum and what does it do?
01:46 Cleaning troughs naturally with microbes
02:39 Correct LAB dosing rates for water troughs
03:06 How cattle spread microbes back into paddocks
03:50 Ingredients needed to make LAB serum
04:24 Step 1: Making rice water to capture microbes
05:40 Step 2: Separating whey using milk
06:45 Step 3: Stabilising LAB with molasses
07:14 Storage life and handling of LAB serum
08:00 Using LAB as a base for other biological brews
08:30 Biodiversity outcomes in the paddock

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