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    • Journal of Range Management, Volume 48 (1995)
    • Journal of Range Management, Volume 48, Number 4 (July 1995)
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    Sequence of species selection by cattle and sheep on South African sourveld

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    Author
    O'Reagain, P. J.
    Grau, E. A.
    Issue Date
    1995-07-01
    Keywords
    Tristachya
    tirstachya leucothrix
    Themeda triandra
    Eragrostis plana
    Hyparrhenia hirta
    South Africa
    veld
    tillers
    sheep
    cattle
    range management
    botanical composition
    defoliation
    grazing
    feeding preferences
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    Citation
    O'Reagain, P. J., & Grau, E. A. (1995). Sequence of species selection by cattle and sheep on South African sourveld. Journal of Range Management, 48(4), 314-321.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644464
    DOI
    10.2307/4002483
    Additional Links
    https://rangelands.org/
    Abstract
    The sequence of species selection over the grazing period directly determines the effectiveness of different grazing systems. Knowledge of this sequence is also important in understanding the plant-animal interface. The sequence of tiller defoliation by cattle and sheep was compared for 7 range grasses at 4 different sites in South African sourveld. Defoliation frequency and height was monitored daily over a 6-day grazing period at each site. The sequence of species selection was the same for cattle and sheep although the acceptability of some grasses varied between animal species. Preferred species were always grazed first along with some (<20%) utilization of species of intermediate acceptability. When about 60% of the tillers of the preferred species had been defoliated, regrazing of these tillers commenced and the rate of utilization of intermediate species increased. Only after 80 to 100% of the tillers of preferred and intermediate species had been defoliated were tillers of the least-preferred species grazed. Sheep were more selective and tended to graze the least-preferred species later in the grazing period than did cattle. There was no difference between cattle and sheep in the frequency of tiller defoliation over the grazing period but tillers were defoliat- ed to a lower height (P < 0.01) and more tissue removed (P<0.01) under sheep grazing. Cattle and sheep are therefore likely to differ in their potential impact upon rangeland.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002483
    Scopus Count
    Collections
    Journal of Range Management, Volume 48, Number 4 (July 1995)

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