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    • Rangeland Ecology & Management, Volume 63 (2010)
    • Rangeland Ecology & Management, Volume 63, Number 5 (September 2010)
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    Grazing Management and Microclimate Effects on Cattle Distribution Relative to a Cool Season Pasture Stream

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    Author
    Haan, M. M.
    Russell, J. R.
    Davis, J. D.
    Morrical, D. G.
    Issue Date
    2010-09-01
    Keywords
    GPS
    heat stress
    off-stream water
    rotational stocking
    stabilized crossings
    
    Metadata
    Show full item record
    Citation
    Haan, M. M., Russell, J. R., Davis, J. D., & Morrical, D. G. (2010). Grazing management and microclimate effects on cattle distribution relative to a cool season pasture stream. Rangeland Ecology & Management, 63(5), 572-580.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/642820
    DOI
    10.2111/REM-D-09-00045.1
    Additional Links
    https://rangelands.org/
    Abstract
    Because of concerns about the impact of grazing management on surface water quality, a 3-yr study was conducted to determine grazing management and microclimate impacts on cattle distribution relative to a pasture stream and shade. Three treatments, continuous stocking with unrestricted stream access (CSU), continuous stocking with restricted stream access (CSR), and rotational stocking (RS), were evaluated on six 12.1-ha cool-season grass pastures stocked with 15 fall-calving Angus cows (Bos taurus L.) from mid-May through mid-October of each year. On 2 d mo-1 from May through September of each year, a trained observer in each pasture recorded cattle position and activity every 10 min from 0600 to 1800 hours. In years 2 and 3, position of one cow per pasture was recorded with a Global Positioning System (GPS) collar at 10-min intervals 24 h d-1 for 2 wk mo-1 from May through September. In week 2 of collar deployment in May, July, and September, cattle had access to off-stream water. Ambient temperature, black globe temperature, relative humidity, and wind speed were recorded at 10-min intervals and temperature humidity (THI), black globe temperature humidity (BGTHI), and heat load (HLI) indices were calculated. Based on GPS collars, mean percentage of time cows in CSU pastures were in the stream (1.1%) and streamside zone (10.5%) were greater (P < 0.05) than cows in CSR (0.2% and 1.8%) or RS (0.1% and 1.5%) pastures. Based on GPS collar data, off-stream water did not affect the percentage of time cattle in CSU or CSR pastures spent in the stream. Probabilities that cattle in CSU and CSR pastures were in the stream or riparian zones increased (P < 0.05) as ambient temperature, black globe temperature, THI, BGTHI, and HLI increased. Rotational stocking and restricted stream access were effective strategies to decrease the amount of time cattle spent in or near a pasture stream. 
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/REM-D-09-00045.1
    Scopus Count
    Collections
    Rangeland Ecology & Management, Volume 63, Number 5 (September 2010)

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