There are a few different wire choices to consider, although usually the most cost effective and simplest way to go is aluminum or steel wire but gauge matters
Electric fence offers an inexpensive fence that can be used for many general purposes. Electric fence wire is manufactured from galvanized wire
Galvanized Electric Fence Wire 17ga
Field Guardian 1320-ft 14-Gauge Electric Fence High-tensile Wire in
Zareba® Systems Electric Fencing Supplies
Red Brand 1,320 ft. x 375 lb. Galvanized Electric Fence Wire, 14
Electric Fence 101
Animal Containment
Red Brand 2,640 ft. x 170 lb. Galvanized Electric Fence Wire, 17
Fi-Shock FW-00001T 17 Gauge Aluminum Fence Wire 1320 ft
Ground Rod Installation for Electric Fence - Premier1Supplies
Animal Containment