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    Preference and behavior of cattle grazing 8 varieties of grasses

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    Author
    Ganskopp, D.
    Myers, B.
    Lambert, S.
    Cruz, R.
    Issue Date
    1997-11-01
    Keywords
    Leymus cinereus
    Elymus lanceolatus
    density
    moisture content
    interspecific hybridization
    Pseudoroegneria spicata
    biting rates
    Psathyrostachys juncea
    mineral content
    Agropyron desertorum
    palatability
    fiber content
    leaf area index
    chemical composition
    selective grazing
    Oregon
    steers
    crude protein
    in vitro digestibility
    biomass
    phenology
    grazing
    feeding preferences
    plant height
    maturity stage
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    Citation
    Ganskopp, D., Myers, B., Lambert, S., & Cruz, R. (1997). Preferences and behavior of cattle grazing 8 varieties of grasses. Journal of Range Management, 50(6), 578-586.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644148
    DOI
    10.2307/4003451
    Additional Links
    https://rangelands.org/
    Abstract
    We compared the forage preferences of steers grazing among 8 varieties of grasses at 2 stages of phenology on the Northern Great Basin Experimental Range near Burns, Ore. Varieties included: 'Nordan' (Agropyron desertorum (Fischer ex Link)Schultes) and 'CD-II' (A. desertorum X A. cristatum (L.) Gaertner) crested wheatgrass; 'Magnar' and 'Trailhead' Basin wildryes (Leymus cinereus (Scribner &Merrill) A. Love); 'Goldar' bluebunch wheatgrass (Pseudoroegneria spicata (Pursh)A. Love); 'Bozoisky-Select' Russian wildrye (Psathyrostachys junceus (Fischer) Nevski); 'Bannock' thickspike wheatgrass (Elymus lanceotatus ssp. lanceolatus (Scribner &J.G. Smith) Gould), and 'Secar' Snake River wheatgrass (proposed nomenclature Elymus lanceolatus ssp. wawawaiensis (Scribner &J.G. Smith) Gould). Three esophageal-fistulated steers grazed each paddock, with 3 paddocks grazed at the boot stage of development, and 3 paddocks grazed after grasses entered quiescence. In boot-stage trials, steers were very selective and collectively harvested 53% of total bites from the preferred CD-II and Nordan. These crested wheatgrasses also ranked higher (P < 0.05) in bites visit and time/visit. Magnar, Trailhead, and Bozoisky-Select were avoided. When grasses were quiescent, steers were less selective; and CD-II, Nordan, Goldar, Bannock, and Bozoisky-Select were all equally acceptable. Magnar and Trailhead were again avoided. Steers consistently took more bites (p < 0.05) from preferred forages and regrazed preferred plants before any variety was depleted. Mean distance traveled between successive feeding stations was greater during bootstage trials (2.4 m) than at quiescence (1.4 m), suggesting steers searched among the nearest 48 neighboring plants in boot-stage trials and the nearest 24 neighbors during quiescence. Measures of grazing time per variety were strongly correlated (r > 0.95, P < 0.01) with total bites harvested from varieties and are probably adequate for ranking relative preferences of steers. By selectively grazing at both stages of phenology, cattle diets were higher in CP, P, and ADL than the standing crop. During boot-stage trials, diets were also higher in Ca and Mg than forage analyses would suggest. Except for phosphorus, the nutritive content of all varieties was satisfactory for lactating beef cattle at both stages of phenology. Given their proven ease of establishment, competitive ability, nutritional value, grazing tolerance, and high relative palatability, we suggest the crested wheatgrasses (CD-II and Nordan), are excellent candidates for reclaiming or establishment of pastures for beef production programs in the northern Great Basin.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003451
    Scopus Count
    Collections
    Journal of Range Management, Volume 50, Number 6 (November 1997)

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