ASCI 223 - Lab 4 - Electric Fencing

ASCI 223 - Lab 4 - Electric Fencing - Electric Fencing...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Electric Fencing Fences can be used to either keep livestock where they should be, or to keep unwanted animals from coming into contact with the livestock. Well designed and operating fencing systems allow for more efficient management of the animals, can ensure proper grazing of forage, can make sure that nutrients (manure) is distributed more evenly across the land, can help to create wanted impact by the grazing animals’ behavior, and can helped to prevent over-baring of the soil which leads to erosion. Traditional fences have been physical barriers. That is, they depended upon strength to keep animals where they belong. From the rock walls of years ago to the wire fences of today, conventional fences have advantages and disadvantages. Once built, they tend to require a minimum of maintenance, with the deterioration of the wire being the primary weak link. These types of fences can provide good predator protection if properly installed. They are also very effective at controlling agitated livestock who are prone to go to great lengths to escape. They do tend to be expensive to build and if animals try to go through them, result in injury to the animals. They also tend to be permanent and therefore, don’t work well when temporary fencing is needed. The traditional sheep fence features woven or net wire about 30” – 36” high with barbed wire strand(s) above that. Metal posts are spaced about 12-15’ apart to provide strength. Brace posts usually of wood are located every 150 – 200’ depending upon terrain and preferences. In order to be effective, the fence needs to be very tight and therefore, the brace posts must be set well in the ground. Electric fences are psychological barriers. In order for them to work as intended, an animal needs to receive an electrical shock the first time it contacts the fence. Modern electrical fences can either be permanent or portable. The key elements of an electric fence system are 1) a source of power, 2) an energizer which shapes the pulse and transmits it to the fence system, 3) highly conductive wires which will allow electricity to move with limited resistance, 4) posts which are insulative, 5) a ground field (system). A permanent electric system will normally use power from the commercial grid and may either be 110 or 220 volt depending upon the size of the energizer. Energizers are rated
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This lab report was uploaded on 04/09/2008 for the course ASCI 223 taught by Professor Rutherford during the Winter '08 term at Cal Poly.

Page1 / 3

ASCI 223 - Lab 4 - Electric Fencing - Electric Fencing...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online