• Diet Overlap of Deer, Elk, and Cattle in Southern Colorado

      Hansen, R. M.; Reid, L. D. (Society for Range Management, 1975-01-01)
      The monthly diets of mule deer and elk were estimated by microscopic analyses of fecal samples from December, 1970, through November, 1971, and from June, 1971, through September, 1971, for cattle. Seasonal preferences for plants were observed for mule deer and elk. Deer diets consisted primarily of browse except in summer and early winter when grasses were taken in significant amounts. Forbs were eaten by deer in small amounts only in the spring and summer. Elk diets were mostly grasses, but a significant percentage of browse was consumed in all seasons except the summer. Cattle diets from June through September were almost entirely grasses or grass-like plants. Dietary overlap between deer and elk ranged from three percent in winter to 48% in summer; of deer and cattle in summer from 12% to 38%; of elk and cattle in summer from 30% to 51%. The diversity of plants in the diets was similar for deer, elk, and cattle.
    • Steer Diets in Southeastern Colorado

      Beck, R. F. (Society for Range Management, 1975-01-01)
      Hereford steers having continuous access to seeded, native, and old field pastures selected over 96% of their diet from six species of grasses and forbs. Changes in species preferences due to availability and maturation of plants caused shifts in summer grazing use made on the different pastures. A grazing proposal based on diets and the periods when steers preferred different forage species is to use old field pastures from mid-spring to early summer, seeded pastures in mid-summer, and native pastures in late summer through fall.