Rangeland Ecology & Management
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Displaying 151 - 200 of 282 results
- Library Collection RecordDyers woad (Isatis tinctoria L.) is an introduced cruciferous forb that is rapidly expanding on intermountain rangelands and is apparently reducing production and regeneration of more desirable…Publication Date 1989-01-01
- Isatis tinctoria
- cultural control
- biological control
- weed control
- mortality
- cutting
- sheep
- Utah
- grazing
- Library Collection RecordEphedra viridis and Ephedra nevadensis were gavaged at high doses to pregnant livestock to determine whether there existed any maternal or embryo/fetal toxicity. E. viridis was tested in both sheep…Publication Date 1989-01-01
- fetus
- human health and safety
- embryo (animal)
- ephedra viridis
- symptoms
- Ephedra
- cows
- toxicity
- sheep
- Utah
- poisonous plants
- Library Collection RecordTwo digestibility and nitrogen balance studies were conducted to evaluate nutrient utilization of 3 commonly browsed range plants by the desert sheep in Northern Saudi Arabia. In experiment 1, 15…Publication Date 1989-01-01
- Haloxylon
- najdi
- nutrients
- physiology
- Acacia
- Saudi Arabia
- Atriplex
- alfalfa
- digestibility trials
- forage evaluation
- nitrogen
- sheep
- diet studies
- Library Collection RecordThe possibility of using livestock as a biological agent to control unwanted ground vegetation in Pacific Northwest coniferous forests has been discussed for over 50 years. However, little…Publication Date 1989-01-01
- agroforestry
- woody weeds
- biological control
- brush control
- Pseudotsuga menziesii
- forest plantations
- Oregon
- sheep
- grazing
- Library Collection RecordSilicon in forage reduces dry matter digestibility and may reduce grazing preference. Two studies were conducted with the following objectives: (1) to evaluate a method of determining grazing…Publication Date 1989
- silicon
- species differences
- Idaho
- sheep
- phenology
- grasses
- feeding preferences
- Library Collection RecordAbstract not availablePublication Date 1989
- crop production
- tillage
- grain crops
- Hedysarum
- Medicago
- Tunisia
- farm management
- forage
- rain
- sheep
- rangelands
- grazing
- variation
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1988-12-01
- Portugal
- swine diseases
- pork
- food prices
- Quercus suber
- wool
- Spain
- rural depopulation
- agrosilvopastoral systems
- vegetation management
- pastures
- prices
- sheep
- wildlife management
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1988-12-01
- feeding behavior
- feeding preferences
- Odocoileus hemionus
- Cervus elaphus canadensis
- Odocoileus virginianus
- cost benefit analysis
- goats
- sheep
- cattle
- rangelands
- grazing
- multiple land use
- Library Collection RecordResearchers continue to oven- and air-dry extrusa samples from esophageally fistulated animals, despite evidence that this practice leads to erroneous nutritional evaluations. Two studies were…Publication Date 1988-07-01
- drying
- esophageal fistula
- phenolic compounds
- chemical composition
- sheep
- diet studies
- goats
- Brazil
- in vitro digestibility
- rangelands
- nutritive value
- forage
- Library Collection RecordInfiltration, sediment concentration of runoff, and sediment production from lightly grazed and ungrazed semiarid slopes were compared using a hand-portable rainfall simulator. The study slope was…Publication Date 1988-07-01
- hydrologic factors
- mountains
- mountain areas
- sediments
- highlands
- runoff
- slopes
- semiarid zones
- sheep
- rangelands
- grazing
- infiltration
- New Mexico
- Library Collection RecordA method for manufacturing esophageal cannulas from plastic tee couplers of suitable size for growing steers and wethers is described. This material was digitized as part of a cooperative project…Publication Date 1988-05-01
- unit costs
- production
- esophageal fistula
- performance
- methodology
- cannulas
- sheep
- cattle
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1988-02-01
- weed control
- grazing
- range management
- rangelands
- cattle
- sheep
- brush control
- biological control
- goats
- forage
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1988-02-01
- nuclear power
- accidents
- radioactive pollution
- fallout
- economic impact
- cesium
- Wales
- pollution
- sheep
- rangelands
- grazing
- Library Collection RecordUse of livestock for biological weed control in timber plantations is gaining popularity in the United States and elsewhere. Efficient use of livestock to control unwanted brush relies upon knowledge…Publication Date 1987-11-01
- forest management
- biological control
- brush control
- Pseudotsuga menziesii
- forest plantations
- Oregon
- diets
- sheep
- seasonal variation
- botanical composition
- grazing
- forage
- feeding preferences
- Library Collection RecordSmall ruminant production in northeast Brazil is limited by prolonged nutritional stress during the dry season. Our study assessed the effects of clearcutting woody vegetation on the nutrition of…Publication Date 1987-09-01
- forest litter
- tropics
- north east brazil
- clearcutting
- forests
- dry seasons
- animal nutrition
- semiarid zones
- sheep
- goats
- grazing
- forage
- feed intake
- Library Collection RecordFifteen cattle (236-500 kg) and 38 sheep (36-55 kg) were fitted with 2 types of indwelling cecal cannulae. Cannulae were made of either clear silicone or plastic tubing. The surgery was conducted in…Publication Date 1987-07-01
- silicone tubes
- surgery
- plastic pipes
- cannulas
- cannulation
- sheep
- cattle
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1987-06-01
- coyotes
- predator control
- electric fences
- predation
- guard dogs
- sheep
- New Mexico
- rangelands
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1987-06-01
- range management
- rangelands
- history
- semiarid zones
- sheep
- land use
- Argentina
- economic development
- steppes
- Library Collection RecordThe influence of crude terpenoid content on in vitro organic matter digestibility (IVOMD) was determined for basin big sagebrush (Artemisia tridentata Nutt. ssp. tridentata), Wyoming big sagebrush (A…Publication Date 1987-05-01
- terpenoids
- Artemisia tridentata
- Odocoileus hemionus
- sheep
- cattle
- in vitro digestibility
- Montana
- Library Collection RecordInfluences of grazing intensity on species composition and herbage production of grass-woodland and improved grassland subtypes of annual range were evaluated over a 5-year period in coastal northern…Publication Date 1987-03-01
- grassland utilization
- grasslands
- responses
- yields
- productivity
- grazing intensity
- California
- sheep
- botanical composition
- rangelands
- grazing
- forage
- Library Collection RecordCuticular imprints of underlying plant tissue which survive ruminant digestion in herbivore feces provide a reliable taxonomic basis for species identification provided they can be adequately…Publication Date 1987-03-01
- epidermis
- cuticle
- Medicago sativa
- histology
- feces composition
- Sorghastrum nutans
- diets
- sheep
- Library Collection RecordWe observed the effects of accessions of big sagebrush (Artemisia tridentata) on big sagebrush utilization by wintering domestic sheep. The sheep had continuous access to high quality alfalfa hay and…Publication Date 1987-03-01
- genotype
- winter
- Artemisia tridentata
- sheep
- grazing behavior
- Utah
- grazing
- feeding preferences
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1987-02-01
- beef
- forestry
- coasts
- geography
- natural resources
- sheep
- California
- rangelands
- Library Collection RecordAlthough there have been several reports on the food habits of domestic herbivores in various semiarid regions of the world, there has been no previous report on the partitioning of forage resources…Publication Date 1987-01-01
- camels
- forage selection
- pastoralism
- arid zones
- Kenya
- sheep
- diet studies
- goats
- grazing behavior
- cattle
- range management
- seasonal variation
- rangelands
- Library Collection RecordInfiltration rate and sediment production were measured over a 2-year period on an intensive rotationally grazed pasture. Measurements were taken prior to the movement of livestock onto the pasture,…Publication Date 1986-11-01
- intensive livestock farming
- hydrology
- sediments
- pastures
- rotational grazing
- sheep
- goats
- cattle
- Texas
- seasonal variation
- rangelands
- grazing
- infiltration
- Library Collection RecordGrazing sheep on improved pastures during winter offers an economically attractive alternative to supplementation in sage-brush steppe ecosystems. We studied diet selection and nutrition of sheep…Publication Date 1986-11-01
- Agropyron desertorum
- steppes
- grazing experiments
- pastures
- winter
- woody plants
- animal nutrition
- digestibility
- sheep
- range management
- rangelands
- Utah
- grazing
- feed intake
- feeding preferences
- Library Collection RecordInfiltration rate and sediment production were measured for 2 years on 3 pastures from an intensive rotational grazing system. The pastures were 32, 24, and 16 ha in size. Stocking rate was held…Publication Date 1986-11-01
- soil water relations
- hydrology
- sediments
- stocking rate
- pastures
- rotational grazing
- sheep
- goats
- cattle
- Texas
- grazing
- infiltration
- Library Collection RecordSome high-elevation summer ranges in southwestern Utah are characterized by a dominance of grass and low-value forbs. A reference area of forb dominance provides a striking contrast to these grass…Publication Date 1986-09-01
- long term experiments
- regenerative ability
- vegetation
- mountain grasslands
- sheep
- Utah
- grazing
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1986-06-01
- protection
- animal protection
- species specific toxicants
- coyotes
- predator control
- toxic substances
- sheep
- livestock
- Texas
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1986-02-01
- soil pH
- Halogeton glomeratus
- crop establishment
- Bromus tectorum
- arid zones
- grassland improvement
- Utah
- sheep
- controlled grazing
- cattle
- rangelands
- range management
- weed control
- Library Collection RecordFew detailed comparisons have been made among alfalfa (Medicago spp.) cultivars and strains grazed in semiarid, rangeland environments. The objective of this study was to determine survival and vigor…Publication Date 1986-01-01
- germplasm
- Medicago
- cultivars
- regrowth
- sheep
- establishment
- rangelands
- grazing
- North Dakota
- Library Collection RecordThe dietary botanical composition of indigenous sheep and goats was determined in the semiarid tropics of northeastern Brazil, using esophageally fistulated animals. Sheep and goats selected similar…Publication Date 1986-01-01
- semiarid zones
- sheep
- adaptability
- diet studies
- goats
- Brazil
- woodlands
- grazing behavior
- dry environmental conditions
- deciduous seasonal forests
- Library Collection RecordNutritional composition of sheep diets from a serpentine barrens range site was determined at various seasons and stages of plant growth and compared to diets from 3 other annual range sites. Sheep…Publication Date 1986-01-01
- serpentine soils
- nutrient contents of plants
- digestibility
- California
- sheep
- diet studies
- grazing behavior
- rangelands
- Library Collection RecordPredation at the University of California Hopland Field Station was evaluated for an 11-year period beginning in 1973. Of those lambs placed on range, an average of 2.7% were killed each year by…Publication Date 1985-09-01
- coasts
- losses
- predators
- California
- sheep
- rangelands
- Library Collection RecordThe effect of hunger satiation on selectivity for diet quality by sheep grazing a smooth bromegrass (Bromus inermis) pasture was studied with esophageal fistulated sheep. Fifteen wethers (45.8 +/- .7…Publication Date 1985-07-01
- hunger
- satiety
- Bromus inermis
- sheep
- diet studies
- grazing
- Library Collection RecordGrazing trials were conducted on high elevation summer range in southwestern Utah, with cattle and sheep stocked separately and together in .4-ha paddocks. Vegetation measurements were taken before…Publication Date 1985-07-01
- symphoricarpos oreophilus
- Symphoricarpos
- foraging
- highlands
- grazing intensity
- sheep
- cattle
- rangelands
- Utah
- Library Collection RecordEsophageal fistulation provides a well-documented standard for herbivore dietary composition studies against which other methods may be calibrated. Modified surgical procedures and animal husbandry…Publication Date 1985-01-01
- surgery
- esophageal fistula
- diet study techniques
- sheep
- Library Collection RecordSeventy-two Navajo ranchers were questioned about the role of mixed-breed dogs with their flocks. Navajos call their dogs "sheep dogs" but, unlike sheep dogs used by other ranchers to…Publication Date 1985-01-01
- coyotes
- predation
- ranching
- guard dogs
- sheep
- goats
- Arizona
- Library Collection RecordFactors possibly associated with high (over 5%) and low (0-5%) predation intensities were compared among 95 sheep or goat producers in 5 states to determine if important differences were evident…Publication Date 1984-09-01
- losses
- predation
- ranching
- Idaho
- Oregon
- California
- sheep
- goats
- Texas
- North Dakota
- Library Collection RecordAn improved bag for collecting samples from esophageal fistulated ewes was tested. The new bag reduced the time required to fit it to the animal and to remove the collected forage. This material was…Publication Date 1984-09-01
- esophageal fistula
- diet study techniques
- sheep
- Library Collection RecordEffects of 5-paddock rotational grazing and continuous grazing were monitored in 1977 and 1978 on an annual grass-subclover (Trifolium subterraneum) pasture. More forage was available to livestock…Publication Date 1983-07-01
- Subclover (Trifolium subterraneum) pasture
- sheep
- Oregon
- Library Collection RecordManagement of feral and Mouflon sheep and feral goats within the Mauna Kea Forest Reserve/Game Management area has been criticized as inadequate to prevent the adverse environmental impact which…Publication Date 1983-07-01
- Hawaii
- Sophora chrysophylla
- sheep
- goats
- Library Collection RecordEsophageal fistulation, stomach content analysis, fecal analysis, and forage utilization were compared as techniques for determining food habits of large herbivores. Each technique was evaluated…Publication Date 1983-05-01
- sheep
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1983-02-01
- prevention
- biological control
- chemicals
- cultivation
- mowing
- control methods
- grazing capacity
- Infestation
- Leafy spurge
- Euphorbia esula
- burning
- forage
- sheep
- Montana
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1983-02-01
- crops
- irrigation
- silage
- rotation
- steppe
- Kundu
- fodder production
- agricultural practices
- communes
- beef production
- Mongolia
- overgrazing
- grasses
- desertification
- pastures
- rangelands
- range management
- cattle
- China
- sheep
- Library Collection RecordThis study considered the feasibility of supplementing crested wheatgrass (Agropyron cristatum Fisch.) forage with some common rangeland shrubs. The necessary proportions of shrub and grass in the…Publication Date 1982-11-01
- nutrient requirements
- Falle
- Early Winter
- digestible protein
- Nephi Field Station
- fourwing saltbush
- body weight
- Supplementation
- Range Shrubs
- energy
- shrubs
- Rabbitbrush
- protein
- sagebrush
- Agropyron cristatum
- sheep
- Utah
- crested wheatgrass
- Library Collection RecordFifteen independent variables consisting of circumference, surface area, and volume for various assumed shapes were derived from simple diameter and height measurements. These variables were used in…Publication Date 1982-07-01
- Idaho
- sheep
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1981-12-01
- management
- cattle
- vegetation types
- range condition
- range productivity
- range research
- shrublands
- forest ranges
- sheep
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1981-12-01
- goats
- sheep ranching
- Navajo
- coyote predation
- mixed-breed dogs
- flocks
- sheep
- Library Collection RecordThis material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries. The Rangelands…Publication Date 1981-10-01
- public land
- Bill Wyche
- Billy Carr
- lease
- price
- conservation
- livestock
- rangeland
- cattle
- management
- sheep
- grazing
- Texas