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    Comparison of techniques for determining the nutritional carrying capacity for white-tailed deer

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    Author
    McCall, T. C.
    Brown, R. D.
    Bender, L. C.
    Issue Date
    1997-01-01
    Keywords
    Zanthoxylum fagara
    digestible energy
    costs and returns
    grassland improvement
    semiarid grasslands
    carrying capacity
    estimation
    body weight
    Odocoileus virginianus
    natural grasslands
    shrubs
    nitrogen content
    Texas
    forage
    dry matter
    feed intake
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    Citation
    McCall, T. C., Brown, R. D., & Bender, L. C. (1997). Comparison of techniques for determining the nutritional carrying capacity for white-tailed deer. Journal of Range Management, 50(1), 33-38.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644220
    DOI
    10.2307/4002702
    Additional Links
    https://rangelands.org/
    Abstract
    Estimates of carrying capacity for herbivores are useful for determining the relative value of different ranges. We compared 6 estimates of nutritional carrying capacity for white-tailed deer (Odocoileus virginianus L.): digestible energy consumed by tame deer, and 5 methods using forage supplies of dry matter, digestible energy, digestible nitrogen, dry matter*digestible energy, and dry matter*digestible nitrogen in two 1-ha enclosures of different shrub plant communities in southern Texas. For the north enclosure, carrying capacity estimates (90% CI) were 3.65 (CI = 3.61-3.69), 4.5 (CI = 3.7-5.3), 9.4 (Cl = 73-11.5), 15.2 (CI = 11.6-18.8), 3.5 (CI = 2.7-4.3), and 3.5 (CI = 2.7-4.3) deer ha-1 58 days-1 for the digestible energy tame deer, dry matter, digestible energy, digestible nitrogen, dry matter*digestible energy, and dry matter*digestible nitrogen techniques, respectively. Corresponding estimates for the south enclosure were 2.6 (CI = 2.5-2.7), 3.5 (CI = 3.2-3.9), 6.8 (CI = 6.0-7.6), 10.1 (CI = 8.8-11.3), 2.1 (CI = 1.8-2.6), and 2.8 (CI = 2.4-3.1). Some methods for estimating carrying capacity provided different absolute estimates, but all produced similar relative estimates between enclosures. Similar relative results between enclosures suggests any of the methods can be used to determine the relative nutritional quality of plant communities. However, the dry matter-based technique was less expensive than the other techniques; therefore, there is no need to use more costly techniques for determining the relative stocking rates for white-tailed deer, unless forage quality differs greatly among plant communities.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002702
    Scopus Count
    Collections
    Journal of Range Management, Volume 50, Number 1 (January 1997)

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