A fence you draw, not build

A conventional fence is posts, wire and a day's work. A virtual fence is a line on a map. You draw the paddock you want on your phone or computer, assign it to a mob, and each animal's neckband knows where that line is.

eShepherd is virtual fencing for cattle, made by Gallagher. Each animal wears a solar-powered neckband with GPS. The neckband knows its own position, knows where the boundary sits, and responds when the animal reaches it. There are no posts to drive, no wire to roll out and no tape to move when the grass needs it.

How cattle know where the line is

Cattle cannot see a virtual fence, so they learn it by sound. When a cow walks up to the line, her neckband plays a tone. If she turns back, that is the end of it. If she keeps walking, a mild pulse follows.

The tone always comes first, and the pulse is the exception rather than the rule. Cattle learn quickly that the tone means "turn around", and once trained they respond to the tone alone. Most mobs learn the system in 7 to 10 days in a simple training paddock.

This works because it follows how cattle already learn. An animal that can predict when a cue is coming, and can avoid it by changing what it does, learns fast and stays calm. The same principle is why cattle learn to respect an electric fence after a contact or two.

What changes on the farm

With the boundary held by the neckband instead of a wire, the paddock becomes something you can change in minutes. That opens up a few things that are hard to do with physical fencing:

  • Rotational and strip grazing without building and shifting temporary fence. You redraw the paddock when the grass needs it.
  • Moves on a schedule. You can plan a rotation once and have the mob shift to the next paddock at a set time, even when you are away.
  • Keeping cattle out of waterways, crops or hazards by drawing an area they should not enter.
  • Eyes on every cow. Because every neckband carries GPS, you also see live positions, tracks, grazing heatmaps and an alert if a cow has barely moved for hours.

The farmers who get the most from it tend to be the ones who want to move cattle more often than their fencing currently allows.

What virtual fencing is not

It is not a replacement for your boundary. eShepherd cuts down internal fencing; it does not replace the perimeter, and sound boundary fences are needed. Your electric fence still has a place too, and temporary electric fence can help during training.

It is not a substitute for stockmanship either. The system tells you a lot about where your cattle are and how they are moving, but it supports physical checks rather than replacing them.

And it is for cattle only. Neckbands suit cattle from 200 kg, and bulls are included.

Where to go from here

If you want to see the mechanics, the next entry walks through the three steps behind every virtual fence: draw, send and cue. If your first question is about welfare, read how the sound-first approach works and what safeguards are built into every neckband. If you are weighing it up for your own place, start with whether eShepherd is right for your farm.