Stimulation Is King: Why Spraying, Foaming, and Dipping Don’t Measure Up

Pre-dipping a teat with a sanitizer whether iodine, lactic acid, or chlorine dioxide is essential for udder hygiene, but application alone doesn’t engage the nervous system. There’s no sensory signal, no hypothalamic response, and no oxytocin release.

Visual contact ≠ Skin contact. Chemical contact ≠ Tactile stimulation.

Unless the teat is touched, rubbed, massaged, or scrubbed, the cow doesn’t know it’s time to let her milk down. The industry has known this for decades:

· Bruckmaier et al. (2001): “Teat dipping without subsequent tactile stimulation does not induce oxytocin release.”

· Schams et al. (1994): “Oxytocin concentrations remain at baseline if only chemical disinfectant is applied without physical contact.”

· Mein et al. (2003): “Forestripping or mechanical stimulation is required to initiate milk ejection.”

Prep Lag Time: When Does It Actually Start?

Prep lag time is the 90 – 120 second interval between the start of teat stimulation and the attachment of the milking unit. Its purpose is to:

· Allow oxytocin to reach the udder.

· Ensure full contraction of alveolar cells.

· Optimize milk flow from the first pulsation.

· Reduce bimodal milk flow curves, which are linked to poor unit alignment, increased teat end stress, longer unit on times and higher mastitis risk.

If stimulation is delayed, such as when a worker applies a dip, waits 30 seconds, then forestrips, the actual prep lag starts after the delay, not at dip application. This can reduce unit efficiency and milkout quality.

The Benefits of Proper Stimulation and Timing

Cows that are properly stimulated and milked with an appropriate prep lag show improvements in:

Cow Comfort

Cows experience less udder discomfort and anxiety when milk letdown is synchronized with unit attachment. Oxytocin has a calming effect, and fully let-down cows are more relaxed in the parlor and milk out quicker.

Milk Quality and Flow

Proper timing results in higher peak flow rates, faster unit times, and less overmilking. This protects teat ends from prolonged vacuum exposure.

Teat End Health

Reduced vacuum at low flow (common in poorly timed milkings) leads to less teat-end edema, congestion, and hyperkeratosis. Research by Zecconi et al. (2015) and others has shown strong correlations between milk letdown synchronization and lower SCC.

Udder Hygiene & Mastitis Control

A smooth, coordinated prep protocol with effective stimulation and thorough cleaning reduces environmental contamination risk, incomplete milkout, and teat end trauma – key contributors to clinical mastitis.

FutureCow: Where Stimulation and Hygiene Work Together

FutureCow: Where Stimulation and Hygiene Work Together

The FutureCow Teatscrubber is engineered to initiate milk letdown the moment it touches the cow. Its soft rotating brushes:

· Physically stimulate the teat, initiating the oxytocin cascade.

· Thoroughly clean and dry the skin surface.

· Apply chlorine dioxide disinfectant with 99.999% kill efficacy.

· Begin the 90 – 120 second prep lag time immediately, with no waiting or double handling.

This synchronization of stimulation + hygiene + timing is what leads to consistent letdown, cleaner teats, calmer cows, and better milk quality.

In Summary

· Milk letdown doesn’t begin with dip. It begins with touch.

· Prep lag starts only after stimulation, not when a spray, foam or dip is applied.

· Proper timing supports milk flow, cow comfort, udder health, and parlor throughput.

· Systems like FutureCow automate and standardize stimulation, cleaning, and chemical delivery for consistent, science-backed results.

If you’re spraying and wiping without stimulation, you’re missing the moment that matters most.