Botanical composition of sheep and cattle diets on a mature annual range

Van Dyne, G; Heady, H

Botanical composition of sheep and cattle diets on a mature annual range

Authors

G. M. Van Dyne
H. F. Heady

Authors Affiliations

G. M. Van Dyne was formerly Research Nutritionist, Department of Animal Husbandry, Davis, is Ecologist, Radiation Ecology Section, Health Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee; H. F. Heady was Professor of Forestry (Range Management) and Ecologist in the Experiment Station, Berkeley.

Publication Information

Hilgardia 36(13):465-492. DOI:10.3733/hilg.v36n13p465. September 1965.

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Abstract

Percentage botanical composition on a weight basis of cattle and sheep diets, and preference ratings for certain plants, for animals grazing on a mature annual range are presented. Composition of the dietary samples was determined by the microscopic point method on forage material collected through esophageal fistulas. The same microscopic techniques were used to determine composition of herbage clipped in the field. Dietary comparisons are made between individual animals, cattle and sheep, morning and evening grazing, grazing on consecutive days, and between lightly and heavily used range. Individual sheep differed more in diet than did cattle. Differences in most dietary components among cattle and sheep decreased as herbage became limited.

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