Abstract
AMMONIA is always present in the rumen liquor of sheep1 and the concentration varies with the kind of protein in the ration, but the addition of starch-rich foods such as maize meal or flaked maize to high-protein rations depresses the concentration2–4.
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PHILLIPSON, A., DOBSON, M. & BLACKBURN, T. Assimilation of Ammonia Nitrogen by Rumen Bacteria. Nature 183, 402–404 (1959). https://doi.org/10.1038/183402a0
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DOI: https://doi.org/10.1038/183402a0