February 11, 2018

Selecting Fence Materials For Livestock Systems | Valley Farm Supply

Good fencing protects and confines valuable livestock by presenting barriers to restrict animal movement. Barriers may be physical, psychological, or a combination of both. Physical barriers consist of enough materials of sufficient strength to prevent or discourage animals from going over, under, or through the fence. Psychological barriers depend upon inflicting pain to discourage animals from challenging a physical barrier of inferior strength.

Traditional livestock fencing materials have included barbed, woven, mesh, and electrified wire, and combinations of these materials. Board fences have also been popular. These conventional materials are still widely used and make excellent fences if properly constructed. However, new materials such as high tensile wire should also be considered when selecting fencing types.

The type of fencing needed for livestock confinement depends on several factors including animal species, age, breed, and production system. Beef cattle on a controlled grazing system have different fencing needs than horses on recreational pasture. Permanent boundary or division fences require different fencing materials than fences for temporary paddocks.

Fencing type and material influence the cost, lifespan, and function of the fencing system. This publication discusses the types of fencing and materials that are available for livestock systems and provides some guidelines on fencing material selection for various livestock types.

 

Fencing Types

Factors for selecting fencing type include affordability, maintenance, durability, and effectiveness of containing livestock. Fencing types vary from physical barriers such as woven wire and board fences to psychological barriers such as electrified poly wire or tape. High tensile electric fences are a combination of both barrier types.

Woven Wire Fences
Woven wire fences consist of smooth horizontal (line) wires held apart by vertical (stay) wires. Spacing between line wires may vary from 1 1/2 inches at the bottom for small animals to 9 inches at the top for large animals. Wire spacing generally increases with fence height.

Woven wire fences are available in numerous combinations of wire sizes and spacings, number of line wires, and heights. Most fences range in height from 26 to 48 inches. Stay wires should be spaced 6 inches apart for small animals and 12 inches apart for large animals.

The standard design numbers listed on the manufacturer's tag (attached to fence rolls) describe the fence (Figure 1). For example, a design number of "1047-12-11" indicates that the fence has ten line wires and is 47 inches high, has 12 inches of spacing between stay wires, and has 11-gauge filler wires (wires between the top and bottom line wires).

Barbed Wire Fences
Barbed wire consists of two or more strands of smooth, galvanized wire twisted together with two or four sharp barbs spaced every 4 to 5 inches. Standard barbed wire fences usually have three to five strands of barbed wire stretched between posts. Typical fence height is either 51 or 54 inches. Spacing between wires depends on the number of line wires and fence height (Figure 2). Line posts are usually spaced 12 to 20 feet apart.

Suspension barbed wire fences consist of four to six strands of 12 1/2-gauge barbed wire stretched taut so no more than 3 inches of sag exists between posts. The wire strands are held apart by twisted wire stays or plastic battens or droppers spaced 16 feet apart. Line posts are usually spaced 80 to 120 feet apart.

Cable Wire Fences
Cable wire fences are expensive and generally used for confinement areas. These fences consist of 3/8-inch steel wire cables stretched between anchor posts. Fence height varies from 60 inches for a 4-cable fence to 72 inches for a 6-cable fence.

A heavy-duty spring is fixed to one end of each cable and attached to an anchor post to absorb the shock on the wires caused by animal contact. The fence may consist of as many cables as desired, although a 6-cable fence is recommended for large animals. This fence has become less popular in recent years; 10-strand high tensile electric fence has taken its place.

Mesh Wire Fences
Mesh wire is made in 11, 12 1/2, 14, and 16 gauges and fences are available in diamond-mesh and square knot designs. Fence height generally varies from 50 to 72 inches. The square knot wire design is formed from single line wires spaced 4 inches apart and stay wires spaced 2 inches apart (Figure 3). The joints are held by a piece of short wire formed into a knot.

The diamond-mesh wire design uses two smooth wires spaced 4 inches apart and twisted together for all line wires (Figure 4). Stay wires consist of single smooth wires the same size as the line wires. These are wrapped around adjacent line wires to form a triangle with a 2-inch base. The diamond shape is formed when two of these triangle bases are fitted together.

Both mesh fence designs are strong and highly safe for animals. However, these fences are expensive and used primarily for confinement areas or small acreages. Mesh wire fence is priced similarly to woven wire fence on a per roll basis, although mesh wire rolls typically contain 1/3 of the fence length found in woven wire rolls.

Board Fences
Board fences are made from 1- to 2-inch thick, 4- to 6-inch wide boards nailed to flat-sided wooden posts (see Fencing Materials and Equipment section). Board fences can be built to any height, although 4 1/2 and 5 foot heights are most common.

Posts are typically spaced at 8 feet. However, board length should always be checked before deciding on spacing. For example, if 16 foot boards are purchased, the posts cannot be driven straight enough to attach the boards every 8 feet and post spacing must be decreased.

Board fences are strong, attractive, and safe for animals. However, these fences are often built incorrectly by placing the boards on the wrong side of the post to maintain aesthetics. Boards should always be attached to the side of the post facing the livestock. Otherwise, animals tend to push boards off the post when they lean or push themselves against the fence.

Board fences are expensive to build and maintain. Furthermore, the addition of one more board significantly increases the amount of materials needed or the labor required to build and maintain the fence. Labor is considerably higher for board fences than for most wire fences. Other disadvantages include splintering, breaking, and rotting of boards.

High Tensile Fences
High tensile fencing is easy to handle, requires little maintenance, and can be relatively low-cost. This type of fencing can withstand livestock contact and low temperature contraction without losing its elasticity. High tensile wire undergoes reduced stretch or sag, which is commonly associated with conventional fence wire. This type of fencing is not recommended for horses unless electrified versions are used and the owner is willing to accept some risk of injury. For more information on fencing systems for horses, see "Horse Fencing 101" available from Augusta County Cooperative Extension.

High tensile fencing is constructed with 11- to 14-gauge wire with a tensile strength of 170,000 to 200,000 pounds per square inch (psi) and breaking strengths of approximately 1,800 pounds. Wires are held in tension along posts spaced 16 to 90 feet apart. At installation, each wire is tightened with a permanent in-line strainer (Figures 5a and b) and is set at 200 to 250 pounds of tension. In-line strainers should be placed near the middle of the fence line to provide the same tension in both directions.

Tension indicator springs (Figure 6) are used to set and maintain the correct wire tension. Use one tension spring on one wire per fence and set it to the proper tension. The other wires can be tightened to the same tension by feel or sound (similar to tuning a guitar). The tension spring is generally set on the second wire. However, placing the tension spring on the top wire provides some additional "give" to minimize damage caused by falling tree limbs.

Electric Fences
Electric fences are a safe and effective means of providing permanent and temporary fencing for most livestock. Their purpose is to supply sufficient electrical shock to any animal, whether livestock or predator, that comes in contact with the wire. Livestock that are unfamiliar with electric fences must be trained to respect and stay away from the electric wire.

Temporary Fences
Temporary electric fences can be constructed from numerous products. One of the more popular products consists of fine aluminum or stainless steel wires woven together with polyethylene fibers to form what is known as poly tape. This product comes in various colors with black being the most difficult for animals and humans to see. Brighter colors such as white or orange are much easier to notice and are recommended where visibility is especially important. Poly tape is also available in various wire densities. The maximum length for poly tape with a low wire density is about 1200 feet. Poly tape with a high wire density can be used for longer runs.

Permanent Fences
Permanent electric fences generally consist of two or more strands of smooth wire. However, fences designed for small predator control may have as many as ten or twelve strands. Alternate wires are ³hot.² Other wires serve as grounded returns to the controller. The ground wire return design is recommended where the soil may be dry some of the time.

Permanent electric fences can be built from aluminum, stainless steel, and high tensile wire. These types of wire conduct electrical charges for longer distances than poly tape. However, they are more difficult for animals to see. Animals will not be effectively trained to avoid electric wire unless they can see the wire as they feel the shock. Attaching strips of brightly colored cloth or plastic to the wire creates contrast and movement for easier visibility.

Controllers
A controller, also called a charger or energizer, regulates the flow of energy in fence wire by supplying pulses of high voltage electricity in short duration. An animal that comes in contact with energized fence wire completes the circuit from the fence wire through its body, and then through the ground to the ground rod. The discomfort of the shock discourages the animal from further contact with the fence.

In Virginia, it is unlawful for any electric fence to be energized unless a controlling device regulates the charge on the fence wire. The controller must meet the safety standards of either the Underwriter's Laboratories, Inc. (UL) or the International Commission for Conformity Certification of Electrical Equipment (ICCC). Do not use homemade or inexpensive, high impedance controllers. They may cause serious injury or death to both humans and livestock. Furthermore, the use of poorly designed controllers may result in grass fires around the fence. Consult Section 55-298.2 of the Code of Virginia for precise specifications for lawful electric fences.

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Fencing Materials and Equipment

Fence posts
Many types of fence posts are available including wood, steel, and fiber glass posts (Table 1). Fence post selection should be based on your specific fencing need. For example, treated wood posts are best for permanent boundary fences while steel or fiber glass posts are suitable for temporary paddock fences. Fence posts must be long enough to accommodate fence height, depth of setting, and an additional 6 inches. Recommended post spacings for various fences are in Table 2.

Table 1. Fence post characteristics.

Post Type Bending Strength Expected Life (yrs) Maintenance
Wood
treated good 10 - 30 very low
untreated good 2 ­ 25 high
Steel
"T" fair 25 ­ 30 low
3/8-inch rod poor 15 ­ 20 medium
Fiberglass
heavy-duty "T" fair1 25 ­ 30 low
light-duty "T" poor1 15 ­ 20 medium
1Fiberglass posts are moderately flexible.

Table 2. Recommended post spacings for various fence types.1

Fence Spacing (feet)
Woven wire 14 - 16
Barbed wire (standard) 12 - 20
Barbed wire (suspension) 80 - 120
Temporary electric 20 - 40
Permanent electric 20 - 90
High tensile 16 - 90
Board2 7 - 8
Corrals 6
1Post spacing are approximate and need to be adjusted for topography, livestock pressure, post size, wire tension, and use of poly spacers, battens, or droppers (electric fence).
2Allowances must be made relative to board length and straightness of driven posts.

Wood
Wood posts are commonly used and can be less expensive than other materials if cut from the farm woodlot or if untreated posts are purchased. Post durability varies with species (Table 3). For example, osage orange and black locust posts have a lifespan of 20 to 25 years whereas southern pine and yellow-poplar rot in a few years if untreated.

Table 3. Life expectancy (in years) of treated and untreated wooden posts.

Species Untreated Treated
Black locust 20 - 25 N/A
Hickory 5 - 7 15 - 20
Honeylocust 3 - 7 10 - 20
Osage orange 20 - 25 N/A
Red cedar 15 - 20 20 - 25
Red oak 5 15
Southern pine 3 - 7 25 - 30
Sweetgum 3 - 6 20 - 30
White oak 10 15 - 20
Yellow-poplar (Tulip tree) 3 - 7 20 - 25

Wood posts are highly variable in size and shape. Strength of wood posts increases with top diameter. Post strength is especially important for corner and gate posts, which should have a top diameter of at least 8 inches. Brace posts should be 5 inches or more in top diameter. Line posts can be as small as 2 1/2-inches in top diameter, although larger diameter posts make fences stronger and more durable.

Flat-sided posts should be used for board fencing; the flat side provides a good surface for board attachment. There are three types of flat-sided posts: faced, square, and half-round posts (Figure 7). Faced posts are the strongest followed by square posts. Half-round posts are made by sawing through the center of the heartwood. These posts are inexpensive, but inferior in strength to faced and square posts.

Steel
Steel posts weigh less and are easier to drive into the ground than wood posts. Steel posts also ground the fence against lightning when the soil is wet. One main disadvantage of using steel posts is that they are likely to be bent or forced out of line by livestock. Using wood posts every 50 to 75 feet can help keep steel posts from bending and improve the strength of the fence.

Electric Fence Posts
Various kinds of posts are available for electric fences including fiber glass, plastic, steel, or low-conductivity wood. Wood and steel posts require insulators to prevent short-circuiting of the fence through the posts. Plastic step-in posts work well for temporary fencing, but should be treated with ultraviolet inhibitors (UV treatment) to minimize deterioration in sunlight.

Wire
Steel wire longevity depends on the type and thickness of protective coating around the wire. Zinc is commonly used to cover (galvanize) steel wire to protect it from rusting. There are several ways of applying zinc to steel wire and some are claimed to be superior to others. However, results of the American Society of Testing and Materials (ASTM) show no practical difference among galvanization methods.

Zinc coatings are measured in ounces of zinc per square foot of wire surface. The more zinc per square foot, the more years of wire use before rusting starts. The ASTM has established "classes" of zinc coatings for steel wire based on the number of years that galvanizing delays wire rusting under different climatic conditions (Table 4). Class 1 has the lightest zinc coating and Class 3 has the heaviest. Machinery, livestock, and fire may damage the zinc coating which results in wire that rusts sooner than undamaged wire. Steel wire may have less than a Class 1 coating. This is often referred to as "regular" galvanizing. Many local dealers stock steel wire with either regular or Class 1 coatings. Wire with a Class 3 coating may have to be special ordered from the manufacturer.

Table 4. Approximate protection given steel wire by Class 1 and Class 3 galvanizing.

Climatic Condition
Wire Size Dry Humid Class Coastal and Industrial
  1 3 1 3 1 3
9 15 30 8 13 3 6
11 11 30 6 13 2 6
12 1/2 11 30 6 13 2 6
14 1/2 7 23 5 10 1 1/2 4 1/2

Steel wire will completely rust within one to three years once rust appears. Wire size is most critical at this point since rusting slowly reduces the diameter of the wire and subsequent wire strength. Small wires are at a disadvantage since the surface area per unit weight of wire is much greater than for larger wires.

Staples
Staples are used to fasten fence wire to wood posts. Selecting the appropriate staple is important to the overall strength and longevity of the fence. Staple withdrawal is a common fencing problem when using pressure-treated softwood posts. The lubricating action of the wood preservative, combined with the soft nature of the wood, causes staples to loosen and fall out of the post. To avoid staple withdrawal, use 1 1/2-inch or 2-inch long, 8- or 9-gauge, hot-dipped, galvanized staples with cut points and barbs. Shorter staples can be used with untreated hardwood posts. Do not select ³bright² staples as they will rust immediately. Aluminum staples should not be used since they bend while being driven into posts.

Nails and Screws
All fasteners should be galvanized with a Class 3 coating to minimize rusting. Nails with grooved shanks are less likely to withdraw from fence posts. Sixteen penny nails work well for fastening. Galvanized screws are another option for fastening boards to fence posts.

Table of Contents

 

Material and Fence Costs

Fencing material costs are highly variable depending upon material types, post spacings, size and terrain of pastures and associated paddocks, and the use of permanent versus portable or temporary fencing. Labor costs also vary depending upon fencing type and pasture terrain. General fencing costs are discussed in this section.

Labor Estimates
Labor requirements vary with specific farm conditions. Table 5 is a guideline for estimating labor to construct permanent fences on the farm. Multiply these estimates by the labor wage rate to approximate labor costs for building or installing a given length of fence. Labor costs are minimal for temporary or portable fencing. Therefore, these costs are often incorporated into management functions or assigned to the cost of checking animals or animal husbandry. Copies of the "Farm Custom Work Rates Guide" are available from your local Extension agent.

Table 5. Estimated labor requirements for permanent fence construction.

Item Labor Requirement
Line posts
Hand tamp 20 min/post
Machine driven 6 min/post
Brace posts
Machine driven 8 min/post
Brace assemblies (construction)
Single span 45 min/unit
Double span 1.25 hrs/unit
Spacers or battens 2 min/spacer
Woven wire
Unwind and stretch 1/2 min/ft
Fasten 6 min/post
Barbed wire (per wire)
Unwind and stretch 1/5 min/ft
Fasten 1 min/post
High tensile wire (per wire)
Unwind 1/100 min/ft
Stretch 10 min/stretch point
Fasten 1 min/post (2 min/post for electric fence)
Electric fence controller 2 hrs/unit

Material Cost Estimates
Table 6 is a summary of relative costs for common fencing materials. Check with local fence suppliers to determine actual material costs.

Table 6. Approximate material costs for fencing materials.

Permanent Fence     Cost Index1 (Materials Only) Expected Life2 (yrs) Maintenance
Barbed wire (2- or 4-point)
Standard fence
3 strands, 12 1/2 ga.     12 33 high
4 strands, 12 1/2 ga.     13 33 high
5 strands, 12 1/2 ga.     14 33 high
3 strands, 14 ga.     11 19 high
Suspension fence
4 strands, 12 1/2 ga.     8 33 medium
6 strands, 12 1/2 ga.     10 33 medium
Woven wire Stay height Spacing      
Light weight (in) (in)      
26 6 14 19 high
32 6 15 19 high
Medium weight 26 6 16 30 medium
32 6 17 30 medium
39 6 18 30 medium
47 6 20 30 medium
Heavy weight 26 6 19 40 low
32 6 21 40 low
39 6 23 40 low
47 6 25 40 low
High tensile
3 strands, 12 1/2-gauge     4 30 medium
4 strands, 12 1/2-gauge     5 30 medium
5 strands, 12 1/2-gauge     6 30 medium
8 strands, 12 1/2-gauge     10 30 medium
Temporary Fence
Barbed wire (2- or 4-point)
1 strand, 12 1/2 gauge     4 30 medium
2 strands, 12 1/2 gauge     5 30 medium
Aluminum wire
1 strand, 9-gauge     6 30 medium
1 strand, 13-gauge     5 30 medium
Poly wire (stainless steel wires)
1 strand, 6 wire     2 5 medium
2 strand, 6 wire     4 5 medium
1 strand, 9 wire     3 5 medium
2 strand, 9 wire     5 5 medium
Poly ribbon (7/8-inch)
1 ribbon, 6 wire     3 3 medium
2 ribbon, 6 wire     6 3 medium
1Cost index figures are to show relative cost, not actual cost. For example, fence with a cost index of 25 costs about twice as much per foot as fence with an index of 12.
2Fence life based on a combination of post and wire life expectancy in a humid climate.

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Livestock Considerations

Special fencing requirements for various livestock types are discussed in this section. The most important criterion to consider during the fence selection process is that of the fence's effectiveness to contain livestock. This ability can be diminished if neighbors own the same livestock species or if extremely palatable forages are available on the other side of the fence. Woven wire fence with an electrified wire has been used successfully in this case. The strand of electrified wire should be placed at 2/3 of the height of the animals to be controlled. Selecting a stronger fencing type is also recommended for animal control when stocking rates and grazing pressure are high.

Cattle
Barbed and woven wire fences have traditionally been used for cattle. Four- or 5-strand barbed wire fences are adequate for cattle. The initial cost of materials for barbed wire fences is about 70 percent of that for woven wire fences of 1047-12-11 design. However, barbed wire fences require higher maintenance and have shorter lifespans than woven wire fences.

Heavy and extra heavyweight woven wire fences with one or more strands of barbed wire above the fence are excellent for cattle. Fence height should be at least 39 inches. The initial cost of woven wire fence is about 130 to 175 percent of the cost of a 5-strand barbed wire fence. However, woven wire fences require less maintenance and last longer that barbed wire fences.

High tensile electric fencing with four or more strands of wire also makes excellent cattle fence. Fence height for perimeter fences should be a minimum of 54 inches. The cost of a 4-strand high tensile electric fence is about 50 percent of the cost of a 4-strand barbed wire fence and 30 percent of the cost of a 1047-11-12 woven wire fence. A moderate amount of maintenance is necessary for high tensile electric fences.

Wood or heavy wire panel fences are highly recommended for cattle handling facilities. Fence height should be at least 60 inches to prevent escape. Fences should also be clearly visible to reduce stress on the animal and to enhance movement through the facilities.

Sheep and Goats
Barbed wire fences have typically been used for sheep and goats. However, these fences are not recommended for sheep since barbs pull the fleece. Furthermore, barbed wire fences do not effectively confine goats if moderate grazing pressure is applied to the fenced-in area.

Heavy or extra heavyweight woven wire fences are excellent for non-horned sheep and goats. Fence height should be at least 39 inches high to prevent animals from climbing over the fence. However, fence height depends upon the breed to be confined. Mesh wire fences also make excellent fences for non-horned sheep and goats. Temporary fencing is not recommended for sheep or goats since they can easily escape

Special consideration must be given to fencing for horned sheep and goats. Fencing should prevent horned sheep and goats from placing their heads on the other side of the fence or should have openings that are large enough to let animals slide their head through the fence and back. Permanent electric fences also make good fences for horned goats and sheep.

Predator control is another important consideration for sheep and goat fencing. Five-strand high tensile electric fence is particularly useful for discouraging predators such as dogs and coyotes. However, fences must be kept free of vegetation to maintain electric current on the fence.

Woven wire fencing is excellent for predator control. One strand of high tensile electric wire can be used at the bottom of a woven wire fence for predator control. If electric wire is not used, the fence bottom should be placed on the ground to allow for the use of snares where predators dig under the fence. At least one manufacturer makes woven wire fencing with stay wires attached to line wires with a fixed knot. This prevents predators from sliding apart the stay wires and entering the confined area.

Coyotes can pass through openings as small as 4 1/2 inches. Woven wire fences with stay wires spaced close together can prevent predators from entering fenced-in areas. Some manufacturers produce fencing with bottom openings of 6 inch by 3 inch for predator control and 3 inch by 3 inch for predator proofing.

Swine
Barbed (standard and suspension) wire and cable fences are not effective for swine confinement. Woven wire fences with one or more strands of barbed wire (placed along the ground to discourage rooting) provide good hog control. Medium and heavyweight woven wire fences with small openings are excellent for restraining swine. Maximum fence height should be 54 inches. Fences built close to the ground prevent hogs from escaping by rooting underneath the fence.

Horses
Visibility is the most important characteristic of horse fencing. Poorly visible fences such as high tensile and barbed wire fences should not be used with horses; the animals may incur severe injuries (e.g. deep lacerations and broken bones) if they become entangled in fence wires. Woven wire fence with openings of 4 inches or more should not be used since legs may become trapped in the openings.

Woven wire fencing with openings less than 4 inches are suitable for horses if a single 1 inch by 6 inch board is placed at the top of the fence to increase visibility. Diamond-mesh wire of 12?-gauge minimum makes good horse fencing. Electric fencing is also an option since it will discourage contact and decrease the incidence of fencing-related injuries. For more information on fencing systems for horses, see "Horse Fencing 101."

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Conclusions

Producers have numerous fencing options for the confinement and protection of livestock. Many traditional materials such as barbed and woven wire fences are suitable for fencing. However, newer materials including high tensile wire should also be considered prior to selecting fencing type. Fencing type should be selected for maximum effectiveness of your fencing need. Fencing materials should provide the longest life and lowest maintenance to optimize the fencing system for livestock confinement and protection. Routine inspection and maintenance will be helpful in giving long and trouble-free service.

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Acknowledgments

The authors would like to express their appreciation for the review and comments made by Lori S. Marsh, Associate Professor and Extension Engineer, Biological Systems Engineering, and Robert "Bobby" Grisso Professor and Extension Engineer, Biological Systems Engineering.

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For Additional Information:

On Fence Construction
NRAES-11 "High Tensile Wire Fencing" ($4.00)

To order NRAES publications, contact your local Virginia Cooperative Extension office.

On Fencing For Horses
"Horse Fencing 101" available through the Augusta County Cooperative Extension.

On Planning Fences
VCE Publication 442-130 "Planning Fencing Systems for Controlled Grazing"

On Predator Damage to Livestock
VCE Publication 410-030 "Addressing the Consequences of Predator Damage to Livestock and Poultry"

Publication Modified from:
Turner, J. H. 1997. Planning Fences. American Association for Vocational Instructional Materials (AAVIM): Winterville, GA.

Bushermohle, M. J., J. B. Wills, W. W. Gill, and C. D. Lane. 1996. Planning & Building Fences on the Farm, University of Tennessee Agricultural Extension Service PB 1541.

Worley, J. W. 2000. Fences for the Farm. Circular 774, The University of Georgia Cooperative Extension Service, Athens, GA.

February 08, 2018

International Crane Foundation Foils Predators With Electric Fences

Cranes rely on open freshwater wetlands for survival during most of their lifecycle. The loss and degradation of these kinds of habitats are among the most pressing threats to the survival of these huge birds.  Another threat, of course, is the ever-present danger of predators such as raccoons and mink.

 

The International Crane Foundation, founded in 1973, operates a 25 acre compound north of Baraboo, Wisconsin devoted to protecting this endangered species which are “the largest and oldest flying birds in the world,” according to ICF spokesman Dave Chesky.

 

About 20 acres are fenced and netted to protect the birds.  Chesky says the site is home for over 120 cranes including every species.  “We’re the only place that has all of them – whooping cranes, sandhill cranes, Siberian cranes – all 15 species.”

 

Most of the birds are part of a protected, captive flock; permanent, non-migratory cranes held in place by and overhead netting that keeps them from flying away.  The perimeter fence that shields them from predators is an ingenious masterpiece of engineering created to keep some wily animals from gaining access to the rare birds.

 

Chesky described the protective perimeter this way: “To keep burrowing animals out, we’ve got a two-foot wide wire mesh buried two inches underground in front of the fence.  The fence is eight feet tall with the first four feet made of one inch mesh chain link fencing. Over the years, we’ve learned to size it slightly smaller than a mink’s skull to prevent them from entering the area.”

 

The top four feet is a Gallagher supplied electric fence powered by B-260 chargers.  “The chargers have proven very reliable,” said Chesky.  “We just had one that was about 20 years old rebuilt by the factory and reinstalled it.  It works perfectly.”

 

Wires are set just one inch apart at the bottom of this powered section and spaced wider at the top.  The fence has ended the foundation’s losses to predators.  “We haven’t lost a bird since it was installed,” said Chesky.

February 07, 2018

Livestock Waterer Cost-Share Program \ Cattle Watering Systems

Wasn’t sure if you guys were aware of this program; it offers $175/waterer! You do have to be a “business” I believe, so for farmers looking to purchase electric heated waterers (or fans) this might really help:

 

https://energysavepa-business.com/specialty-programs/agricultural/

February 05, 2018

Beehives, Bears and Electric Fences | Beekeeping Fencing

A bear’s fondness for honey is legendary. The stuff even sits in little plastic, bear-shaped dispensers on grocer’s shelves.  It the perfect bear food, too - protein is available as bees and honey produces carbohydrates. It’s a source of food that’s particularly desirable in the spring when hungry bears leave their winter dens.

 

With more than 45,000 bee colonies in Colorado, apiaries are big business. As every bee keeper knows, where there’s honey, bears aren’t far behind.  In one night, a hungry bear can do at least $3,000 of damage.  During peak feeding season in late summer, bears are “eating machines,” consuming up to 20,000 calories a day as they bulk up for winter hibernation.  It’s that kind of potentially enormous economic damage that gives the Colorado Division of Wildlife a massive headache.

 

The Division is responsible because the Colorado legislature passed a law in the1930’s that requires the state to reimburse property owners for damage caused by big game. It’s why more than 100 Gallagher solar energizers are needed to keep bears out of Colorado beehives.

 

“The fencing program is multi-purposed; to prevent damage and to protect bears,” said Phil Ehrlich, a game damage prevention technician with the Colorado Division of Wildlife, Montrose, Colo.  Noting that a hungry bear is both resourceful and intelligent, he said, “These bears have wised up and are going to get in any way they can.  With an electric fence, we can educate bears and keep them out of trouble.”

 

The Division of Wildlife gives beekeepers a “semi-permanent” electric fence which can be set up to protect an area from 400 square feet to 1600 square feet. A Gallagher system powered by a solar energizer is used for the toughest, high-risk situations where they have an existing problem, especially the 40 by 40 yards or larger

 

“We’re using the Gallagher energizers in high-risk situations to lessen our liability. We wanted to be able to say we gave beekeepers the best equipment and a good system.”

 

Since Ehrlich began working with electric fences, no Gallagher products have been returned. “You pay a bit more, but they work,” he said.

 

“Bears can be tough, persistent, intelligent and aggressive animals when they want something,” Ehrlich says. “The Gallagher Energizers give us a lot of options on how to protect the beekeeper and the bear.”

 

According to Erwin Quinn, president of Gallagher, “An electric fence is a psychological barrier that keeps farm animals and wild animals where they should be with safety and security.  Because the fence is a psychological barrier, it doesn’t require great strength to be effective. However, it must be well designed in accordance with the species to be controlled.”

 

The company, based in North Kansas City, Missouri, is one of the world’s largest manufacturers of electric fences designed to contain cattle, horses and other farm animals as well as prevent wild animals and predators from gaining access to areas where they can do economic damage.

February 02, 2018

Costs of Livestock Fencing | Electric, Barbed wire, Woven wire

Here are some charts to compare the cost of High Tensile electric fence, Poliwire electric fence, woven wire, and barbed wire fencing... The construction costs can be very different, but you should consider the livestock you are working with too.

February 02, 2018

How to Build High Tensile Fence | Valley Farm Supply

 

 Building your High Tensile fence

You have already decided what kind of fence you need, now the next step is to determine where you will put it. Be sure of your boundaries, check local laws and regulations pertaining to fencing and locate any potential hazards, both natural and man-made, such as underground utility lines and overhead electric wires. Make sure the fence path is clear of brush and debris. Once you're ready, install all end and corner posts. Next, run out a single guide wire to help assure a straight fence line. This wire will become the bottom wire of the fence and serves as a guide for setting the line post.

Attach the guide wire to both end posts. Use a chain grab wirepuller or an in-line strainer to pull the guide wire taut (about 100 pounds tension). For safety's sake, wear appropriate clothing, heavy leather gloves and eye protection when working with any wire fence and, when driving posts or operating other power equipment, wear hearing protection. If the terrain is hilly, drive the rise and dip post first and staple the guide wire to them before setting the line posts.

Setting the post(s)


Check the chart, which gives suggested post space distances for the type of fence that you are building. In most cases, the use of Kiwi Droppers® will allow you to reduce the cost by increasing the distance between posts.

Posts, small end down, can be mechanically driven with a hydraulic post driver or set using an auger-drilled pilot hole and rammed into place. Posts can be handset but driven posts have about five times the holding strength of handset posts.

If you hand set posts for brace assemblies, set the end post in concrete to keep it from uplifting. Dig the hole with a bell-bottom. Before you place the post, hammer a ring of staples, driven half way in, around the end of the post about 2 inches from the bottom. Place the post and tamp in tightly 8 inches of dry concrete mix. The soil moisture will cause it to set up. Fill the remaining hole with tightly tamped dirt to ground level. For gatepost, add an additional 8 inches of dry concrete mix 18 inches from the top of the hole. Fill the hole with dirt to ground level, tamping tightly.

To prevent overturning a post in soft soil and lifting of a post in a dip, increase the post length and drive deeper; again, check the chart.



Brace assemblies

The ASAE (American Society of Agricultural Engineers) recommends a double brace end assembly for American soil conditions. A double brace is rated at 9,000-lbs. pullover resistance and is more suitable for longer runs and larger livestock. Single brace assemblies can be used for fences of six wires or less. You can increase the holding ability of a brace assembly by increasing the length of the top horizontal post. Recently, a new double brace has become popular, which has the holding properties of a traditional double brace, but affords a cost savings in materials and labor. Drive a 6"x8' end/corner post but then use 4"x7' posts for the rest of the brace. The key is that the brace wire extends in a double wrap from the bottom of the end/corner post to the brace pin on the second brace post. To make the job neater, double figure 8 the brace wire.
 

 



Corners and changes in direction


A corner can be made using a common end post and building two brace assemblies at an angle from that end post. To reduce material costs, corners may be constructed using post leaning against the pull of the wire: For every 10-degree directional change, use a 4" x 8' post on a 4" lean, 4' deep; for every 20-degree change, use a 5" x 9' post on a 5" lean, 4 1/2' deep; for every 30-degree change, use a 6" x 9' post on a 6" lean, 5' deep. Drive the post by machine on a lean or to the bend. With either type of corner, string the wire to the outside of the bend, or any curve in the fence for that matter.


Stringing the wire

Once the line posts are set, mark them for the proper wire spacing, and string the remaining wires. A spinning jenny or multi-wire fencer will make handling the wire easier.

For electrification, slide on the required number and type of insulators. Staple the wire accurately to its mark at all corners, major dips and rises, and at the post next to where you will install the in-line strainers. These points will create some friction. The in-line strainers should be installed near the middle of these friction points.

To ease installation, attach a chain grab wire puller to the wire at least four feet from a post, pull out the slack, cut the wire and use crimping sleeves to secure the strainer. Thread the other end of the wire through the hole in the drum, cut off the surplus. With the handle turn the drum until no slack remains. Use one tension indicator spring for each set of in-line strainers.

Joining and tying off wire

You can join wire by manually tying a knot but a knot in the wire will reduce the wire strength by a minimum of 30%. It is better to join wire with a mechanical wire link or three crimping sleeves; both create a joint as strong as the wire. To anchor wire at the end, as in joining wire, you can knot the wire but you reduce its strength. The better way to anchor the wire is to use two crimping sleeves or drill holes into the end post and use a wire vise mechanism, which has a tapered barrel that firmly holds the wire.


Stapling

Before stapling the remaining line posts, tension the wire taut, about 100 pounds, using the in-line strainers. This will prevent crossed wires and aid in positioning the wire. To reduce pullout use 1 1/4 - to - 2 - inch long, 8 or 9 gauge slash cut, electro-coated galvanized staples with barbs. If you rotate the staple 30 to 45 degrees away from the flat face, you will prevent the post from splitting and the staple leg will spread, curving outward from the flat face for greater holding power. Drive staples at an upward angle into posts in dips and at a downward angle into posts on rises. The staple should allow the wires to move back and forth freely. Staple the wire to the livestock side but on the outside of corners and curves.


Tensioning the wire


One in-line strainer per wire can tension 4, 000 linear feet of high tensile wire on a straight-line fence over level terrain. To calculate the number of in-line strainers needed add 500 feet for each corner, severe dip, rise or curve to the total linear feet of your fencing project. Divide this total by 4,000, round the answer up to the nearest whole number (for example, 1.3 = 2) and multiply by the number of wires on your fence (2 x 6 wires = 12 strainers or two sets). Tensioning from the top wire down will provide clearance for turning the in-line handle. Use the wire with the tension indicator spring attached as a guide to tension the other wires. Pull the wire towards you and tighten until all the wires have the same "feel" (resistance). After a day or so the fence will set, check each wire and if necessary, correct the tension to the recommended 250-lb. pull.


Grounding non-electric fence

All fences utilizing steel wire on nonconductive posts must be grounded for safety from lightning. Drive a galvanized steel post, 3/4 - inch galvanized steel pipe or an approved ground rod at least 3 feet into the ground, not more than 300 feet apart (150 feet in dry, rocky soil). Attach 5 strands of galvanized wire to the rod and lace through each fence wire. Bend the top of the ground wire bundle into a loop and staple home to a post.

Electric fence

Your high tensile fence can be easily electrified using new high voltage, low impedance type energizers. The construction methods described for non-electric fences also apply to electric fences with one important exception. Energized wires must be insulated from the post; The need for insulation makes it necessary to plan for electrification before you begin construction. For specific help on energizer selection see Energizer guide.


 
 
 
10 Wire Heavy Lot Fence
8 Wire Boundary
6 Wire Cattle
6 Wire Anti-Deer
Post Height After Driving
53"
48"
53"
60"
Top Wire Height
51"
46"
51"
58"
Wire Spacing From Ground Up In Inches*
5,5,5,5,5 5,5,5,5,6
4,5,5,5,6 6,7,8
81/2,81/2,81/2, 81/2,81/2,81/2
8,10,10, 10,10,10
End Gate Or 900 Corner Post
6"-7" x 8'-9'
6" - 7"x 8'
5"-6" x 8'
6" - 7" x 9'
1st Brace Post
5" - 6" x 8'
5" - 6" x 8'
4" -5" x 8'
5" - 6" x 9'
2nd Brace Post
4" - 5" x 8'
4" - 5" x 8'
-
-
Horizontal Post
4" - 5" x 8'
4" -5" x 8'
4" -5" x 8'
4" - 5" x 9'
Line Post
4" - 5" x 7'
3"-41/2" x 61/2"
31/2"x41/2"x61/2'
3" - 4"x 8'
Dip Post
4" - 5" x 8'
4" - 5" x 8'
4" - 5" x 8'
4" -5" x 9'
If Electrified
Hot Wire Locations**
Wires 5,6 & 10
Wires 2, 4 & 8
Wires 2, 4 & 6
Wires 1,2,3 & 5
* The bottom height can be ± 2 inches from the ground to compensate for surface irregularities.
**Count from the guide wire (bottom) up.

Suggested Post and Dropper® Spacing

 
Application (stable soil) Post Spacing Dropper® Spacing No. of Wires
RANGELAND 100' 20' 6
PASTURELAND      
  Light Pressure 48' 12' 8-10
  Med. Pressure 40' 10' 8-10
  36' 12' 8-10
  Heavy Pressure 30' 10' 8-10
  24' 8' 8-10
CORARAL OR LOT      
  Light Pressure 20' 10' 10
  Med. Pressure 16' 8' 10
  12' 6' 10
  Heavy Pressure 8' 4' 10
  6' 3' 10
ANTI DEER FENCE 65' 0 6

January 29, 2018

Gallagher and RFID tags in cattle | Livestock weighing and management

Gallagher announced today additional automation compatibility between Midwest’s Cow Sense® herd management software and the Gallagher 700 indicator. These features offer tremendous benefits to Gallagher customers who are also Cow Sense users. These individuals can now use their Gallagher 700 indicator to record data in the field and then download directly into their Cow Sense herd file.

 

“This new capability is inline with our ‘Smart Technology Made Simple’ theme,” says Todd Mach, Products Manager for Gallagher USA of North Kansas City, Missouri. “We have had a good working relationship with the people at Cow Sense. Through that relationship we realized that we are both working toward the same goal of simplifying record keeping for today’s progressive producers,” explains Mach. “It just made sense that we raise the bar to the next level and deliver a product to our joint customers that would further simplify their data collection needs, be durable enough to stand up to inclement weather and working conditions, as well as automate the process of delivering data between our two systems. You can use the Gallagher 700 indicator for any type of data collection and you don’t have to use it with loadbars. Just collect data with it!” Mach continued. “In addition to weight, the Gallagher 700 is compatible with RFID readers to record the EID with the animal’s visual  identification or tag number. Furthermore the 700 has customizable features to collect additional information on a particular animal’s record. Our customers can configure this indicator to provide fields to capture additional data such as calving, weaning, or yearling information in what we term ‘Trait Tables’. The developers at Cow Sense created standardized trait tables that can be loaded on our 700 indicator and deliver the information back to Cow Sense in a common language, streamlining and simplifying the process for a producer-user to load into their Cow Sense herd” concludes Mach.

 

“Data entry is often the biggest hurdle to successful record keeping. Tools like the Gallagher 700 that simplify data collection and automate data exchange are a great asset to producers” adds Tim Davis, Vice President of Midwest Microsystems, developers of Cow Sense herd management software. “We have long had automated systems for delivering weight data from the Gallagher Scale indicators and RFID readers into Cow Sense on a chute-side computer. The preformatted ‘Cow Sense Trait Tables’ provide a convenient means of capturing data in the Gallagher 700, then upon return to the home or office computer import it to Cow Sense with a few mouse clicks.

 

The Cow Sense Trait Forms allow users to capture critical data points tied to events including: adding cow, bull and calf records to a herd or updating existing records with birth, weaning, yearling, breeding or preg check data. The built-in checks and balances in the verification process help to make sure all the necessary data has been entered before the data is added to records in Cow Sense With the data successfully stored in Cow Sense, you can immediately begin to use the powerful analysis and reporting features for management decisions”.

 

Both Cow Sense and the Gallagher 700 interface with electronic RFID tags and readers. This allows the user to key in the animals visual ID tag or identification and scan the EID. Once this information has been downloaded into Cow Sense those two numbers are linked. Once the animals EID is in Cow Sense, the user only has to scan the EID when collecting subsequent data. When the additional data is downloaded Cow Sense adds it to the animal record linking to that EID number.

 

“No two ranches or farms are the same, and their data collection needs are no exception. We strive to provide our customers with simple solutions from which they can choose to meet their record keeping needs,” added Davis. “We emphasize to our customers not to let any software dictate their management, but allow their management to dictate how they use the software. The Cow Sense Trait Forms are an example of that solutions simplified focus. Our joint customers of Cow Sense and Gallagher are the beneficiaries.”

 

For questions on Cow Sense herd management software or a free trial CD which includes the Cow Sense Trait Forms for Gallagher Scales contact Tim Davis at Midwest MicroSystems (800) 584-0040, e-mail: info@midwestmicro.com or download online at http://www.cowsense.com/. For additional information on Gallagher and the 700 contact Todd Mach (800) 531-5908 Ext 177, e-mail t_mach@gallagherusa.com, or visit Gallagher’s web site at:http://www.gallagherusa.com/.

 

About Cow Sense® herd management software

Cow Sense Software is the flagship product of Midwest Microsystems L.L.C. The company deploys superior quality, integrated information management systems in the global market. Cow Sense is a prime example, as it was the first Windows based commercially produced and sold software on the market in 1994. Today Cow Sense has evolved into a suite of products with the original herd management software at the core. Advanced technology, flexibility, functionality for user customization yet Cowboy friendly features have made Cow Sense the dominant herd management program on the market.

 

About Gallagher

Gallagher’s global Research and Product Development department employs 70- people, including 18 engineers, and owns more than 100 international patents. This has enabled Gallagher to develop state-of-the-art products to meet the present and future needs of livestock producers and consumers. Based in North Kansas City, Mo., Gallagher focuses on animal management systems for the livestock and lifestyle markets, including electric fences, weighting systems, watering systems and gate hardware.

January 23, 2018

New Energizer selection chart | Gallagher Electric Fence Chargers

Gallagher offers a large range of quality, made to last Electric Fence Energizers that offer honest value day in and day out. Use the Energizer Selection Chart to get a quick overview of available selection by mileage and animal type.

 

fence charger selection chart for electric fence energizer

January 09, 2018

Joining Poliwire and Politape | Handy Hints

poli wire connection

Electric Fence Hint: To join poliwire or politape, use a cigarettle lighter to burn away the plastic yarn in order to expose the stainless steel wire. Twist and join the wires together, then tie the poliwire or politape in a knot. The electrical current can then pass through the join. When inter-connecting fence wires at the end of a strain, use joint clamps. Using these clamps, instead of twisting wires together prevents arcing and greatly reduces voltage loss

January 07, 2018

Electric Fence Solar Panels For Sale | Electric Fence Charger

A discount solar panel supplier for electric fence solar system. Convert your Battery operated electric fence charger with a solar panel and battery set up system.

TAKE ME TO SOLAR PANELS

 

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