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Abstract
Twelve snowshoe hares (Lepus americanus) were used in an experiment to evaluate the degree to which they are able to digest and metabolize three important winter browse species: quaking aspen (Populus tremuloides), white cedar (Thuja occidentalis), and red maple (Acer rubrum). These browse species had digestible energy values ranging from 18 percent (of gross energy) for maple to 42 percent for aspen. Metabolizable energy values ranged from 17 percent for maple to 25 percent for aspen. Cedar had intermediate digestible (32%) and metabolizable (23% ) energy values. Protein digestibilities were 0, 13 and 38 percent for cedar, maple, and aspen, respectively. There were no significant (P > 0.05) differences among consumption rates for the three browse rations, although all were significantly (P < 0.05) greater than the intake levels observed with 100 percent commercial chow.
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