Alternative Winter Feeding Strategies for Beef Cattle Management
(NM1726, Revised Apr. 2019)The focus of this publication is to highlight alternative practices for consideration as an alternative to winter animal confinement in a feedlot. Advantages and disadvantages are highlighted based on available research.
Harsh winter weather conditions in North Dakota often require the confinement of cattle in smaller, sheltered areas.
The size of beef herds has increased through time, while winter feeding areas typically have remained the same size. Concentrated wintering sites, while providing for quick access and care of animals, may increase environmental concerns.
Improperly managed confined-animal facilities pose a pollution risk to surface and ground water. Manure nutrients, such as phosphorus, can reach surface water through runoff and cause oxygen-limiting algae blooms. Nitrogen in manure can pollute ground waters through leaching. Additionally, changes in regulatory guidelines may precipitate a need for changes to traditional winter cattle management practices.
Properly managed wintering sites allow beef producers to be proactive in addressing potential future regulations. Wintering sites selected and managed to maintain consistent vegetative cover will minimize the environmental risk of runoff and seepage when compared with bare ground. Additionally, the cost from the buildup of manure and bedding can be mitigated by utilizing practices that limit confinement.
First, we will define an animal feeding operation (AFO). Drylots are AFOs with total containment of runoff and manure (Figure 1). Lots are usually dirt surfaces that are shaped and sloped to engineering specifications to allow proper drainage and collection of runoff.
A containment pond is constructed at the base of the lot slope. Containment pond effluent levels are reduced through evaporation or land application as fertilizer. For more information on drylots, consult NDSU Extension publication NM1155, “Beef Feeding Operation Siting and Design Basics.”
Alternative Winter Feeding Strategies
Extending the Grazing Season
Grazing periods can be extended by several months through stockpiling and managing forage for late-season use. Forage stockpiling practices include bale grazing, swath and windrowed forage grazing, grazing late-summer-planted cover crops or rested pastures, and utilizing postharvest crop residues.
Extending late-season grazing can distribute manure across a larger area and allow cattle to be maintained on vegetative growth (Figure 3). Allowing limited access and moving cattle frequently is important for uniform manure distribution. Additionally, it can reduce feed waste (Berger and Volesky, 2006). Depending on snow accumulation, a moveable electric fence system can be utilized for consistent grazing across a pasture.
Alternative Winter Grazing
Bale Grazing
Bale grazing is an alternative wintering option that involves strategically placing hay bales throughout a field (crop or hay land) and utilizing fencing to allocate bales incrementally to the herd.
Advantages
• More uniform manure distribution (Figure 4) can occur through periodically moving the fenced feeding area for the herd. (Bales typically are placed 20 to 25 feet apart. The removal of twine also has been shown to help animals uniformly consume the bale, minimizing waste.)
Shelter Considerations for Alternative Grazing Strategies
Portable Windbreaks
During extreme cold periods, cattle utilize most of their nutrient intake to meet maintenance requirements, leaving very little extra nutrients available for weight gain. Windbreak fences provide shelter, reducing animal maintenance requirements and allowing producers to maintain or improve animal gains and body conditions (National Research Council, 1981). Portable windbreaks can assist with providing wind and snow protection for animals that are exposed to the elements.
A multitude of materials can be used to construct portable wind fences. Utilizing materials that are durable will increase the longevity of the fences. A durable option would be portable windbreaks constructed on 25-foot lengths of pipe frame with board slots, guardrails or sheets of steel (Figure 5). Paneling of 6 to 10 inches works well.
Windbreaks should be constructed to allow 20 percent of the wind to pass through. The goal is to reduce wind speed but prevent snow drifting. Slot openings greater than 2 inches allow too much wind through. Allowing for 4 to 6 inches of open space at the fence base will promote better drainage and drying.
When selecting a site for fence placement, prevailing winds and drainage should be considered. Other landscape features such as shelter belts, hills and ravines should be factored in as well (Midwest Plan Service, 1986).
As a general rule, 1 linear foot of windbreak protects enough area for one cow when the fence is 6 to 8 horizontal feet. Naturally, windbreaks are a site of animal congregation, so being able to move them periodically helps reduce manure buildup in one area.
Water
Considerations for Alternative Winter Grazing
Cattle require a fresh water source for optimal health and performance. The water content of feedstuffs being consumed and environmental factors play a role in animal water needs. When air temperatures are less than 29 F, cattle require 2 to 3 pounds of water per pound of dry matter intake. Water requirements can double as a result of large temperature changes such as, minus 5 to 30 F (National Research Council, 1981).
Snow can provide water to cattle. Approximately 12 inches of snow can provide 1 inch of water (Brown, 2006). However, some animals may not consume snow readily, and ice crusts often form on snow and limit animal consumption. Water may need to be hauled to cattle or wells may need to be constructed and plumbed into a water delivery system. Many different types of water delivery systems are available (Figure 6).
Portable waterers powered by solar, wind or a generator can be utilized. Stationary waterers may be heated by electricity, propane or geothermal energy. The wattage of the waterer, and distance and size of electrical lines need to be considered to adequately heat and supply cattle with water. Stray wattage also can cause animals to refuse water sources. Check waterers often to ensure that animals are drinking regularly.
Regardless of the water system, the water trough should be insulated and heated. This ensures that cattle have water and prevents damage to the waterer from expanded ice. The watering system needs to be checked regularly during extremely cold days for ice removal and ensuring the watering system is working correctly.
Clean-water Diversion
Construction of clean-water diversions prevents runoff from accumulating around the feeding area (Figure 7). This reduces mud, odors and sick cattle.
Clean-water diversions must be constructed of a relatively impervious material (clay) and be able to divert water from a 25-year, 24-hour rainfall event while maintaining an additional 0.3 feet of freeboard (additional capacity). The minimum width of the top must be 4 feet and have a settlement factor of 10 percent.
The slopes of a clean-water diversion should be shallower than a ratio of 3 horizontal-to-1 vertical. Areas that might endure equipment traffic should have slopes with a ratio of 6 horizontal-to-1 vertical.
The channel grade must be designed to prevent erosion. The maximum acceptable channel velocity is 2 feet per second on sandy soils and 3.5 feet per second for clay dikes with vegetation. The clean-water diversion also must be inspected routinely for erosional wear, ridge height and other factors that might affect the structural integrity (North Dakota Department of Health, 2005).
