Graduate Thesis Or Dissertation
 

Flushing ewes on chemically cured hill pasture in western Oregon

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/v692t860q

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  • A study was conducted during 1975 and 1976 to evaluate the use of chemically cured pasture as a flushing feed for ewes in western Oregon. In 1975 (0.56 kg/ha) and 1976 (0.28 kg/ha) paraquat was used to chemically cure hill pasture forage when perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb.) were in early anthesis. Crossbred ewes grazed the pastures from 17 days before through 17 days before the start of mating. In both years, paraquat treatment significantly increased protein content, but had little effect on dry matter digestibility. However, it greatly reduced herbage yield, probably due to increased shattering and decomposition losses. High summer rainfall appeared to intensify the latter problem, Using chemically cured forage as flushing feed did not improve ewe weight gains of lambing performance. Flushing ewes on chemically cured pasture appears to have little potential in areas, such as western Oregon, where summer rainfall is likely to occur.
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