J. Anim Sci.
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J. Anim Sci. 1975. 41:1189-1198.
© 1975 American Society of Animal Science
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Ammoniated Acid Hydrolyzed Wood Residue as a Source of Nitrogen for Ruminants1

L. L. Erlinger2 and Terry Klopfenstein

University of Nebraska, Lincoln 68503

Abstract

The potential of ammoniated acid hydrolyzed sawdust (NH4-HSD) as a source of supplemental nitrogen was examined in a series of metabolism and growth trials. The first metabolism trial was designed to examine the availability of the nitrogen acquired in the ammonia neutralization process with sheep. The digestibility of NH4-HSD nitrogen was lower (P<.05) than that of urea nitrogen. The lower nitrogen digestibility was reflected in lower (P<.05) blood urea values. Nitrogen retention as a percent of nitrogen intake and as a percent of absorbed nitrogen followed the same trend as apparent nitrogen digestibility.

In a second sheep metabolism trial the effects of an unammoniated HSD (NaOH neutralized) upon nitrogen utilization in rations supplemented with soybean meal and urea were examined. The feeding of this material at the 10 and 20% ration level resulted in a linear decrease (P<.025) in both percent consumed nitrogen retained and percent absorbed nitrogen retained. Rumen ammonia levels were lower (P<.05) at 2 hr post-feeding and blood urea concentrations lower (P<.05) at 6 hr post-feeding for lambs fed NaOH-HSD.

Footnotes

1 Published with the approval of the Director as Paper No. 3894, Journal Series, Nebraska Agricultural Experiment Station. The authors gratefully acknowledge the support provided by Dierks Division, Weyerhaeuser Company, Hot Springs, Arkansas.

2 Present address: The Kerr Foundation, P.O. Box 280, Poteau, Oklahoma 74953.






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Copyright © 1975 by the American Society of Animal Science.