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2. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   Charger for a plus-minus net fence. An electric fence is a barrier that uses electric shocks to deter humans and other animals [note 1] from crossing a boundary. The voltage of the shocks may cause discomfort or death. Most electric fences are used for agricultural purposes and other non-human animal control.

3. Nofence - Wikipedia

   en.wikipedia.org/wiki/Nofence

   Nofence is a Norwegian company that makes GPS collars for farm animals (cattle, sheep, and goats) that discourage them from crossing virtual fence boundaries. [1] [2] Oscar Hovde Berntsen has been working on the idea of virtual fencing, as an alternative to fixed electric fencing, since the 1990s. [3] Nofence was incorporated in 2011. [3]

4. Agricultural fencing - Wikipedia

   en.wikipedia.org/wiki/Agricultural_fencing

   The tradition of fencing out unwanted livestock prevails even today in some sparsely populated areas. For example, until the mid-20th century, most states in the American West were called "open range" ("fence out") states, in contrast to Eastern and Midwestern states which long had "fence in" laws where livestock must be confined by their ...

5. Cattle prod - Wikipedia

   en.wikipedia.org/wiki/Cattle_prod

   An electric cattle prod is a stick with electrodes on the end which is used to make cattle move via a relatively high-voltage, low-current electric shock. The electric cattle prod is said to have been invented by Texas cattle baron Robert J. Kleberg, Jr. [ 1 ] [ 2 ] of the King Ranch around 1930, although versions were sold as early as 1917.

6. Barbed wire - Wikipedia

   en.wikipedia.org/wiki/Barbed_wire

   An example of the costs of fencing with lumber immediately prior to the invention of barbed wire can be found with the first farmers in the Fresno, California, area, who spent nearly $4,000 (equivalent to $105,000 in 2024) to have wood for fencing delivered and erected to protect 2,500 acres (1,000 ha) of wheat crop from free-ranging livestock ...

7. Cattle grid - Wikipedia

   en.wikipedia.org/wiki/Cattle_grid

   Cattle grid on country road. Cattle grids are usually installed on roads where they cross a fenceline, often at a boundary between public and private lands. [5] They are an alternative to the erection of gates that would need to be opened and closed when a vehicle passes, and are common where roads cross open moorland, rangeland or common land maintained by grazing, but where segregation of ...