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Electrical fencing for your sheep
ELECTRICAL FENCING FOR SHEEP
This is one of the most expensive capital expenditure on a sheep farm. In many cases, existing fence can be modified for sheep raising. There are different types of fencing on a sheep farm: perimeter and interrior fencing. The Perimeter fencing is usually installed around the boundary of the property (or grazing area) and is the first line of defense against predators. It is intended to last for a long period of time and should be constructed of high quality materials. Suitable perimeter fences for sheep are multi-strand, high-tensile, electric fences and woven wire fences with electric offset wires and barbed wires at the top and bottom of the fence. Autogate Electrical Fencing has a huge variety of Interior fences (or cross fences) are used to subdivide fields into smaller areas (paddocks) for effective grazing management. They also have the construction material from permanent, semi-permanent, or temporary fencing materials. When it comes to interior fencing, you usually do not need to determine thieves; it may need to be good enough to keep weaned lambs away from their dams and/or rams away from ewes. Temporary fencing can be used to enclosed areas for temporary grazing (e.g. a corn or wheat field. There is also the High-tensile electric fencing. This type of fence last for a long time, and is very popular as it is relatively easy to install, and cost less than other types of fencing. Whereas cattle can often be controlled with 1 or 2 strands of electric wire, sheep require multiple strands, not just to keep them in, but to keep burglars out.
Electrical fencing may also be implanted, meaning ground electrical fencing but bear in mind poor grounding is the leading cause of electric fence failures. An electric fence must be properly grounded so that the pulse can complete its circuit and give the animal an effective shock. It is important to follow manufacturer's instructions for grounding electric fences. A minimum of three ground rods should be used for each energizer. It is estimated that 80% of electric fences in South Africa are improperly grounded. A voltmeter is an inexpensive tool that measures the charge the fence delivers and can be used to trouble shoot electric fence problems.
The charger (or energizer) is the "heart" of the electric fence system. It converts main or battery power into a high voltage pulse or "shock" as felt by the animal when it touches the fence. In the past, electric fence chargers shorted out easily. Today's chargers are low impedance, meaning they are designed to effectively shock though vegetation and other foreign materials touching the fence.
A 4,000 volt charger is usually sufficient for sheep. The number of joules needed depends on the length of the fence, the number of electrified wires and the severity of conditions. A joule is the amount of energy released per pulse. As a general rule, 1 joule will power 6 miles of single fence wire; 4.5 joules is usually adequate for 20 to 50 acres. Lightning strikes can damage energizers. Surge protectors and lightening arrestors are recommended to minimize energizer damage.
High tensile electric fencing requires periodic upkeep. Fence wires should be kept properly tensioned. Weeds and brush should be cleared from the fence line by spraying or mowing.
It is important to note that an electric fence much more of a psychological barrier rather than a physical one. Sheep and lambs must be trained to respect electric fence. Once trained, they will usually respect the fence even if it is off for any reason.
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AUTHOR: KOBUS LABUSCHAGNE. www.autogate.co.za
About the Author
Kobus is the owner of Auotgate South Africa. They offer services in GARAGE DOOR SALES, INSTALLATION AND REPAIRS, ELECTRICAL FENCING, 24 HOUR ELECTRICIANS, ALL YOUR SECURITY NEEDS, BOREHOLES SALES AND INSTALLTION AND SWIMMING POOL PUMPS AND INSTALLATION.
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