Effects of summer sheep grazing on browse nutritive quality in autumn and winter
Article Abstract:
Research undertaken in north-central Idaho into the impact of early-summer compared with late-summer sheep grazing on the nutritive quality of browse available to wild ungulates indicates that grazing treatment affects forage quality in winter for ninebark, redstem ceanothus, rose, Scouler willow, snowberry and thimbleberry. Early-summer sheep grazing boosts the nutritive quality of redstem ceanothus, snowberry, ninebark and rose, but has little impact on the forage quality of thimbleberry and no impact on the nutritive quality of Scouler willow. Late-summer grazing reduces forage quality in winter of redstem ceanothus and ninebark, but has no impact on snowberry, willow or thimbleberry.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Food habits and preferences of blue grouse during winter
Article Abstract:
Relatively little information is available about the specific food preferences of blue grouse, although it is known that their winter diets are made up mainly of cones, twigs, needles and buds of conifers. Recent research involved observing radiomarked birds in the wild and using captive blue grous to look at consumption of Douglas-fir, lodgepole pine, subalpine fir, limber pine and Engelmann spruce. It was found that wild birds fed mainly from Douglas-fir and lodgepole pine, with preference rankings being closely related to metabolisable energy values.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1996
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Nutritional quality of winter browse for ruffed grouse
Article Abstract:
A study has been conducted to determine the nutritional quality of the winter foods of ruffed grouse through feeding trials using wild grouse. Grouse fed with quaking aspen, staminate flower buds, willow buds, American hazel, paper birch and speckled alder catkins were weighed. Grouse preferred spring aspen flower buds and exhibited the highest nitrogen balance for hazel. All winter browse exhibited lower metabolizable energy coefficients than predicted by a nutritional model.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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