When we think about dairy nutrition, it’s easy to focus on feed, minerals, and supplements—but water? It often flies under the radar. Yet, water is literally in every cell of a cow’s body and plays a huge role in health and milk production. Vern Osborne, professor emeritus at the University of Guelph, even calls it the “mega molecule” for good reason.
Why Water Matters
Cows are sensitive to water quality, tiny amounts of minerals or impurities can affect how much they drink. Transition cows especially increase their intake dramatically, and research shows that water can even carry extra nutrients like glucose or omega fatty acids to help cows stay in positive energy balance.
Practical Tips for Better Water Intake
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Placement counts: Individual water bowls alongside group troughs encourage cows to drink naturally.
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Clean and moving water: Cows prefer flowing water; suction drinkers or small moving features can stimulate intake.
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Check your minerals: Filtration is key. Mechanical filters are usually more reliable than chemical ones, and knowing the mineral content of your water can help balance diets.
The Takeaway
Water isn’t just something to keep cows hydrated, it’s a vital part of nutrition and herd management. Paying attention to water quality, availability, and delivery can improve milk yields, cow health, and overall farm efficiency.
Every drop counts. Treat it right, and your herd will thank you.
