Sheep grazing efficiency and selectivity on Oregon hill pasture
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Authors: E. Ali, and S. H. Sharrow
Date: 1994
Journal: Journal of Range Management
Volume: 47
Number: 6
Pages: 494-497
Summary of Methods: Authors compared short duration grazing by sheep, in early and late spring, at different stocking intensities. Average daily forage disappearance was higher in the 10-day treatment than the 2-day one, but this higher forage intake was offset by a larger amount of forage destroyed by each ewe under the low stocking density (10-day treatment). Percent of tillers grazed was higher under 10-day than 2-day treatment. Lower selectivity for subclover (Trifolium subterranum) than tall fescue (Festuca arundinacea) indicate a more uniform distribution of grazing in the 10-day treatment. For this area, a 10-day rotation was more efficient than 2-days in a short duration grazing system.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: tall fescue, festuca arundinacea, subclover, trifolium subterranum, short-duration grazing, preference index, grazing efficiency
Annotation: Study area is defined as a tall fescue-subclover hill pasture vegetation type. Grazing trial duration: 2,6,10 days, at a stocking rate of 760 ewe days / ha. Comparing results from the first 2 days in all treatments is the "stock density" treatment (380, 126, 76 ewes / ha respectively).
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