Husbandry of free-ranging cows using virtual fencing concepts

摘要

@@Introduction Virtual fencing is a method for managing free-ranging animals that melds electronics with animal behavior to accomplish animal control in lieu of conventional fences.Sensory cues,most commonly sound and electrical stimulation,have been used to warn an animal that it is approaching an invisible radio frequency ( RF) boundary.Today RF signals emanating from satellites,such as those from the Global Positioning System (GPS),replace the need for ground based RF signals.GPS can accurately and precisely determine an animal's location on the landscape,and when combined with a Geographic Information System (GIS),it is possible to administer cues autonomously in a temporal and spatial format that produces repeatable low stress prescription animal management.