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    • Journal of Range Management, Volume 42 (1989)
    • Journal of Range Management, Volume 42, Number 4 (July 1989)
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    A cow-calf vs yearling substitution ratio for shortgrass steppe

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    Author
    Forero, L.
    Rittenhouse, L. R.
    Mitchell, J. E.
    Issue Date
    1989-07-01
    Keywords
    animal unit equivalent
    substitution
    conversion
    cows
    sown grasslands
    ratios
    calves
    steppes
    stocking rate
    pastures
    steers
    natural grasslands
    range management
    Colorado
    forage
    feed intake
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    Citation
    Forero, L., Rittenhouse, L. R., & Mitchell, J. E. (1989). A cow-calf vs yearling substitution ratio for shortgrass steppe. Journal of Range Management, 42(4), 343-345.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644969
    DOI
    10.2307/3899507
    Additional Links
    https://rangelands.org/
    Abstract
    Managers often deal with the problem of herd replacement of one animal class by another. A preliminary study suggested that steers could be substituted for cow-calf pairs on shortgrass steppe on a weight:weight basis. This ratio was tested on 2 pairs of pastures, one dominated by native shortgrass steppe and the other by a seeded stand of sideoats grama (Bouteloua curtipendula (Michx.)Torr.). The pasture sizes were set so the cow-calf pastures were 1.8 times larger than the steer pastures to allow equal herd sizes for the 2 classes of animals. Adequacy of stocking was determined by equalizing utilization. The actual stocking ratios of 1.79 steers to 1 cow-calf pair on the native pastures and 1.78 steers to 1 cow-calf pair on the seeded pastures resulted in no significant differences in utilization or standing crop of remaining forage after the grazing season ended. Season-long, the 90% confidence bounds of the steer-weight:pair-weight ratio was 0.981-1.035 and 0.968-0.985 for native and seeded pastures, respectively. This ratio provides an acceptable initial stocking rate guide for those wishing to change from cow-calf to steer operations, or vice versa, on the shortgrass steppe.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899507
    Scopus Count
    Collections
    Journal of Range Management, Volume 42, Number 4 (July 1989)

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