Recovery of chromic oxide administered in paper to grazing steers

TitleRecovery of chromic oxide administered in paper to grazing steers
Publication TypeJournal Article
Year of Publication1969
AuthorsKiesling H.E., Barry H.A., Nelson A.B., Herbel C.H.
JournalJournal of Animal Science
Volume29
Pagination361-364
Date Published1969
Keywordschromic oxide, gelatin capsules, recovery, shredded paper, tobosa
AbstractChromic oxide has been used as an external indicator to determine fecal output under a wide range of conditions with diverse results. The most common method of administering Cr23 has been as powder in gelatin capsules or mixed with the ration. One of the main problems in its use in powder form is the diurnal variation pattern of excretion (Kane, Jacobson and Moore, 1952; Linnerrud and Donker, 1961; Smith and Reid, 1955). An effort was made by Corbett, Greenhalgh and McDonald (1958) to reduce diurnal variation by using paper as a carrier for the indicator. The paper, containing 20 to 30% chromic oxide, seemed to approximate more nearly the physical characteristics of roughage rations. Corbett et al.(1960a, b) reported reduced variation when chromic oxide was administered as a component of shredded paper. Streeter and Clanton (1964) and Nelson, Kromann and Green (1966) have also found chromic-oxide-impregnated paper to be a reliable external indicator. The purpose of this study was to determine chromic oxide recovery by steers grazing tobosa (Hilaria mutica) at two stages of maturity (immature to prebloom and dormant) when chromic oxide was administered once daily as a component of shredded paper.
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