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    • Journal of Range Management, Volume 42 (1989)
    • Journal of Range Management, Volume 42, Number 5 (September 1989)
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    Growth patterns of yearling steers determined from daily live weights

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    Author
    Currie, P. O.
    Volesky, J. D.
    Adams, D. C.
    Knapp, B. W.
    Issue Date
    1989-09-01
    Keywords
    weight determination
    liveweight gain
    steers
    grazing
    
    Metadata
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    Citation
    Currie, P. O., Volesky, J. D., Adams, D. C., & Knapp, B. W. (1989). Growth patterns of yearling steers determined from daily live weights. Journal of Range Management, 42(5), 393-396.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645028
    DOI
    10.2307/3899546
    Additional Links
    https://rangelands.org/
    Abstract
    Growth patterns for free-ranging yearling steers were quantified from daily live weights obtained with automatic scales which animals entered to obtain drinking water. Forty steers were monitored during each summer grazing period of 1986 and 1987. Frequency of watering and, thus, weighing on the automatic scales averaged 2.4 times/day. Significant (P < 0.01) quadratic relationships between live weight and Julian date were obtained. In 1986, predicted live weight of the steers peaked in late July to early August and then decreased through to the end of the grazing period in September. Live weight of the steers in 1987 followed a similar pattern although the late summer decrease was not as great as in 1986. When animals were periodically weighed using manual procedures, a lower rate of gain was measured in the second half than in the first half of the summer grazing period every year from 1983 through 1987. However, we were unable to specifically identify when these weight changes occurred until the automatic scales were used in 1996 and 1987. The automatic weighing equipment documented substantial within-day live weight variability among steers. This variability changed over the grazing period on a day-to-day basis. Within-day variability must be considered when establishing manual weighing schedules with conventional equipment. Live weight data in conjunction with other measurements will permit development of a more comprehensive animal-plant-climate model.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899546
    Scopus Count
    Collections
    Journal of Range Management, Volume 42, Number 5 (September 1989)

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