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Acetylurea and acetamide or mixtures of them with urea as NPN sources in vitro. 2. Protein and fatty acid production after adaptation of the donor animal to urea

, : Acetylurea and acetamide or mixtures of them with urea as NPN sources in vitro. 2. Protein and fatty acid production after adaptation of the donor animal to urea. Archiv fur Tierernahrung 23(2): 133-142

2. Rumen fluid was obtained from a sheep which had been given for 10 or 30 days a semisynthetic diet with urea as the sole source of non-protein N. The test NPN sources, urea, acetylurea, acetamide, urea 50 with acetylurea 50% and urea 50 with acetamide 50%, were added to the rumen fluid to give 42 mg N/incubation mixture with cellulose 1 g, glucose 100 mg and starch 100 mg; 20 mu Ci Na35SO4 was added as the tracer. Incubation was from 0.5 to 6 h.


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