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Rangeland Principles (Rem 151)
K. Launchbaugh K. Launchbaugh K. Launchbaugh Grazing Management Rangeland Principles (Rem 151)
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Natural & Human Resources Grazing Management Decisions
Community Response Climate Topography Veg. Community Wildlife Mgmt. Philosophy & Goals Livestock Species Stocking Rate Grazing System Vegetation Community Livestock Production Wildlife Community Once grazing management decisions are made, there are continual interactions between livestock, wildlife, and vegetation.
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Principles of Grazing Management
1) 2) 3) 4) 5) 6)
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Principles of Grazing Management
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Principles of Grazing Management
1) Know you resources and goals. 2) Balance animal demand with available forage supply. 3) Manage livestock distribution. 4) Avoid or minimize grazing during sensitive times. 5) Provide effective rest after grazing. 6) Monitor for change.
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1) Know your resources & goals
Land Animal Human Economic Environmental K. Launchaugh
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Objectives grazing could include:
Restoration of plant vigor Allowing plants to produce seeds Patchy or more uniform utilization Increased animal production Jen Peterson K. Launchbaugh
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2) Balance supply with demand
= Stocking Rate
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3) Manage Livestock Distribution
How can we change where animals graze on the landscape? Water Salt? Supplement Herding Fence Livestock Selection/Training Fire K. Mink T. Lester water.usgs.gov R. Holes
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Mange Livestock Distribution
K. Launchbaugh Where animals graze…. Some things we CAN’T change: Forage Weather Aspect Animal pests such as flies and mosquitoes South facing hillsides when it is cold. North facing hillsides during the heat of the day. Livestock will most to high ground to get away from flies and mosquitoes.
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Manage Livestock Distribution
Where animals graze…. Some things we CAN change: Distance to water Type of animal to use topography Enticements (supplements) Encouragement (herding) Disincentives (fences) Etc. South facing hillsides when it is cold. North facing hillsides during the heat of the day. Livestock will most to high ground to get away from flies and mosquitoes.
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Manage Livestock Distribution
Entice animals with water and supplement Ranch Headquarters Water tanks Salt & Supplement Perennial Stream Map Legend Area of Low Use Area of Low Use Change location of salt-mineral licks, place salt away from water in areas that grazing animals are avoiding. Salt increases the appetite of a grass-eating animal. Salt is not as effective as other attractants, such as water, and low-moisture molasses blocks, for luring cattle to graze underutilized areas.
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How far animals graze from water depends on:
The Animal Sheep > Cattle Brangus > Angus Cattle Young > Old The Land Rough country:~ 0.5 mile max Rolling country: 1.0 mile max Flat sandy country: ~ 1.5 mile max Flat country: ~ 2.0 mile max Recommended distances between watering points vary according to terrain, species of animals, and breed of livestock. Beyond 2 miles, we see very little use beyond these distances. Where available watering points are infrequent, can create large sacrifice areas around watering points. Trails are created to water. Nutrition benefits of range forage are nullified by high energy cost of travel. Lower calf weights.
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Distribute Livestock Evenly
K. Mink T. Lester R. Holes
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Animal Characteristics Matter
Species of Animal Class of animal (age, sec, physiological status) Natural Abilities(breed and genetics) Topography Climate Foraging K. Launchbaugh Kind of animals: cattle, sheep, goat, horses, wildlife species. Class of animals: reproductive (pregnant or open), age (mature or young), lactating or dry. Black Angus, belted galloway: winter hardiness Brahman: survive inadequate food and harsh weather. Charolais: graze aggressively in warm weathr, withstand the cold, and have heavy calves. Ray Holes
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Animal Characteristics Matter
Slope use by cattle, feral horses, deer, and bighorn sheep D Ganskopp, M Vavra - Northwest Science, 1987 Ganskopp & Vavra 1987
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Animal Characteristics Matter
Diet preferences affect landscape use Concentrate Feeder (browse) Intermediate Feeder (forbs) Roughage Feeder (grass) K. Launchbaugh K. Launchbaugh K. Launchbaugh Remember that animals eat differently and use the landscape different.
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Improving Animal Distribution
Prescribed Burning Livestock observations in 2,000 acre pasture showing distribution for 15 days pre-burn (2004) and the subsequent June (2005). – David Ganskopp – ARS Eastern Oregon Agricultural Research Center Ganskopp study: in this study, the collared animals were hanging out near water and in the level areas of the landscape. The distribution really shifted after the burn. Removal of previous years’ growth, greater access to new plant growth. Early spring fire can increase soil temperature, initial growth, improve forage quality, encourage earlier grazing.
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Improving Animal Distribution
Fencing Positive Reduce highly used areas Riparian areas Restoration Plots After Fir High-value forage areas Manage season of use Allow rotational grazing systems Negative Expensive Construct Maintain Restrict wildlife movement FWS.gov
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Virtual Fence? K. Mink T. Lester R. Holes
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4) Minimize grazing during sensitive season
Potential Damage Green-up Growth Initiation Flowering/Seed Set Dormancy Potential Damage to Herbaceous Plants from Defoliation
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4) Minimize grazing during sensitive season
Potential Damage Green-up Growth Initiation Flowering/Seed Set Dormancy Low Demand Low biomass & low need for CHOs Abundant Resources for recovery time, moisture, nutrients temperature Potential Damage to Herbaceous Plants from Defoliation High Demand for energy and nutrients Limited Resources for recovery Very Low Demand
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Timing of Grazing Effect of grazing varies according to: Season of Use
Phenological Stage of Plant Opportunity for Regrowth Remember how much attention you need to give to the timing of grazing. Season of Use: plants are more resistant to intense grazing during dormancy than in active growth. Phenological Stage of Plant: defoliation in spring when plants start growth may be less harmful than in fall when plants are flowering and maturing. Opportunity for regrowth: will plants be able to produce new leaves and develop strong root systems prior to entering dormancy following defoliation? Jen Peterson Steve Bunting K. Launchbaugh
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When is grass sensitive to grazing?
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6) Monitor for change Justin Trujillo K. Launchbaugh
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Pasture for control Reduce pasture size & increase animal density
Facilitate targeted grazing Provide rest Opportunities for restoration Perhaps could do mob graze periodically to improve grazing utilization
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A Good Grazing System Should…
Account for plant physiology and response Be suited to kinds of plants present Improve range conditions and production Be adapted to soil conditions Not be detrimental to animal gains Be practical to implement in a ranching operation
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Principles of Grazing Management
1) Know you resources and goals. 2) Balance animal demand with available forage supply. 3) Manage livestock distribution. 4) Avoid or minimize grazing during sensitive times. 5) Provide effective rest after grazing. 6) Monitor for change.
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Rangeland Principles (Rem 151)
K. Launchbaugh K. Launchbaugh K. Launchbaugh Grazing Management Rangeland Principles (Rem 151)
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