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Eden Shale Farm Update- April 2022

4/15/2022

 
​In the middle of April we rented a skid steer for a week to clean out the winter feeding areas. As I have mentioned before, we use a rotational system with our winter feeding so that the cows will eat their winter hay from four different locations. This allows the manure to not be concentrated into one location and lessens the amount of drudgery that animals have to endure to get to the hay.
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The two locations that get the worst are the heifer calving facility and the mature cow calving facility. The heifers eat their hay on an existing concrete pad and it builds up enough that we will scrape it clean 2-3 times during the calving season. This location has a manure stack pad that we store the manure in until conditions are right to spread the manure on pastures and hay fields. 
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​The cow calving facility also has a stack pad that stores the manure. This barn is equipped with 6 different flooring treatments that give the floor structural support when it is wet, but it also has drainage which allows the moister to percolate down away from the bedding. This helps keep the flooring surface dryer and makes for a better surface for the new calves. 
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​Of the different flooring types, my favorite is still the geo grid. This product has small honey comb shaped opening that are back filled with gravel. The geo grid is a sturdy product that scrapes just like concrete. You can spin circles on the stuff and it will stay in place every time. Much like any good product, it is not cheap. Total installation of the geo grid is the same cost as pouring concrete. Therefore, if I am building a feeding structure outside, I prefer to pour concrete. If the structure is under roof, I like the geo grid because of the drainage.

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If you are interested in learning more about the different flooring types you can go to our website at https://www.edenshalefarm.com/producer-resources.html. Click on “Bull Barn Facilities” and “Calving Barn Facilities”. 

Improving Cow Paths

4/12/2022

 
Steve Higgins, Biosystems and Agricultural Engineering
A large animal can expend tremendous energy when traveling on a slope. To compensate, grazing animals create trails that run parallel to a slope. These trails allow animals to graze the upper slope while standing on flat ground, which provides energy and grazing efficiencies (Figure 1). When cattle do this, it is colloquially known as “cowtouring,” because the trails resemble the practice of contour cropping and terracing.

A second type of trail created by grazing animals, the cow path, is also designed to save energy. At approximately 12 inches in width, these singular trails are the same width as grazing trails, but there are subtle differences between them. Animals can be seen walking these trails in single file without grazing, typically using them to reach water, feed, or mineral sources efficiently. These trails may follow contours, but they may also be found on the crests of hills, in ravines, and crossing ravines to get from one hill slope to another. These trails can also be made around obstacles within a field. Common obstacles include internal corner posts, which may also demonstrate the severe erosion that can occur when grazing animals round corners (Figure 2). 
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​Figure 1. One animal typically occupies a grazing trail. These trails allow the animals to graze the upper slope and provide grazing and energy efficiency. 
​Figure 2. Livestock commonly create paths around obstacles in a field, such as internal corner posts. 
​Depending on the topography and weather, certain sections of these trails can become troughed or concave and may reach depths of 15 inches or more. Drainage water that collects in troughed sections of these trails can make travel difficult. Over time, certain sections of the trail may become less efficient, at which point animals will create a new path. In addition, the location of water sources or other features that animals want to reach may necessitate uphill and downhill travel on these paths. This can require a tremendous amount of effort. It may be difficult to achieve in wet weather and can be problematic, as cattle do not like to traverse slopes greater than 30 percent, while the limit for horses is 50 percent. Installing an all-weather surface such as a Mechanical Concrete path can improve energy efficiency for animals traveling along a hill slope. Mechanical Concrete is a building process that uses recycled tires and aggregate stone to create a strong and economical base. The sidewalls of used tires are first removed, leaving a tread cylinder. The ideal tread cylinder is one that has been created from a semitruck tire, because the constructed path requires a lift, or trench, of approximately eight inches. A trench depth of eight inches is needed to remove the topsoil layer and provide a rock depth suitable for supporting the weight of grazing animals. The trench can be created using a backhoe or track hoe with a 36-inch bucket (Figure 3).
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Figure 3. A backhoe creates a trench for the all-weather path. 
​An actual tire cylinder may be approximately 40 inches in diameter, but the removal of the tire sidewall will enable the tire cylinder to fit within a 36-inch-wide trench. Nonwoven geotextile fabric should be placed in the bottom of the trench (Figure 4). This material is needed to provide the drainage, reinforcement, friction, and separation necessary for structural integrity. The tread cylinders are then placed end to end, on top of the geotextile fabric (Figure 4). A suitable rock material, such as dense-grade aggregate (DGA), is then placed inside and around the tire voids (Figure 5). The top edge of the tire cylinder should be at grade level or a little higher (Figure 6). 
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Figure 4. Nonwoven geotextile fabric and tread cylinders are placed in a trench and backfilled with dense-grade aggregate (DGA). 
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Figure 5. The tread cylinders are filled with rock.
The effort required to install an all-weather surface trail for grazing animals will not be wasted. Grazing animals and their offspring can be seen using these trails during all times of the year (Figure 7). These trails provide energy efficiencies for animals, particularly during wet weather periods. 

Summary
Grazing animals will create efficient routes to acquire water, mineral, or feed. However, these trails may become difficult to travel during periods of wet weather. Erosion of the trail could also expose clay subsoil, which can become slippery, plastic, and difficult to traverse. The energy expended and drudgery experienced by a large animal traveling on a slope can be tremendous. Producers interested in providing a more effective trail should consider implementing an all-weather surface application.
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Figure 6. A completed trail leads to a water source located on a hill with 30-percent slopes.
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Figure 7. Cattle use an all-weather surface path to get to and from a water source. 
​References
Coughenhour, M. B. 1991. Spatial Components of Plant-Herbivore Interactions in Pastoral,
Ranching, and Native Ungulate Ecosystems. Journal of Range Management 44 (6), pp.530-542.
Howard, J. K. and Higgins, C. G. 1987. Dimensions of GrazingStep Terracettes and their Significance. International Geomorphology. Edited by V. Gardiner. Wiley and Sons.
Roath, L. R. and Krueger, W. C. 1982. Cattle Grazing and Behavior on a Forested Range. Journal of Range Management 35 (3), pp.332-338.
Trimble, S. W. and Mendel, A. C. 1995. The Cow as a Geomorphic Agent – A Critical Review. Geomorphology 13 (1-4), pp.233-253. 

To view in original pdf format, click the link below. 
http://www2.ca.uky.edu/agcomm/pubs/AEN/AEN165/AEN165.pdf 
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    Copyright © Kentucky Beef Network, LLC. All rights reserved. This content may not be copied, reproduced, distributed, or used in any manner without written approval from Kentucky Beef Network, LLC. For Informational Purposes Only. 

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    Hello, my name is Dan Miller and I work for the Kentucky Beef Network. KBN took over operation of the Eden Shale Farm in April of 2013. We are using the 961 acre farm as a demonstration and learning center for beef cattle producers. This blog serves as a place to document daily farm activity and host discussions about the demonstrations being implemented. I hope you find this information useful and that you come visit us at Eden Shale Farm.

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245 Eden Shale Rd.        Office: (859) 278-0899
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