Field Trials in California Highlight Potential of Virtual Fence

Livestock producers and researchers in California are exploring the potential of virtual fence for livestock grazing. The technology utilizes GPS-enabled collars to monitor animal locations in real time. The collars provide audio and tactile cues to contain animals within a perimeter set by a producer using a laptop or smartphone application. Field trials showed that virtual fencing can help save time in rounding up livestock and in preparing an area to graze. It can also help in locating missing or straying stock. The technology also shows promise in using grazing to manage invasive weeds. Research has also revealed areas where the technology could be improved, such as its reliance on cellular networks that may provide patchy coverage and its up-front cost. Nonetheless, Brian Allen, assistant specialist from the University of California Cooperative Extension office in the Central Sierra, says, “While physical perimeter fencing remains essential, VF is rapidly emerging as an innovative tool to control livestock with ease, precision, and flexibility in ways that were not previously feasible with traditional fencing.”