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  • Title: Ammonia production from amino acids and urea in the caecal contents of the chicken.
    Author: Karasawa Y, Kawai H, Hosono A.
    Journal: Comp Biochem Physiol B; 1988; 90(1):205-7. PubMed ID: 3396327.
    Abstract:
    1. Ammonia production from urea and amino acids in the caecal contents of the chicken was evaluated using 15N-labeled nitrogenous compounds. 2. About 43% of each of urea nitrogen and glutamine amide nitrogen was converted to ammonia nitrogen, but only 25% of epsilon-nitrogen of the added arginine, a precursor of urea, was found in ammonia. 3. Amino nitrogen of the separately added glutamic acid and glycine to be converted to ammonia was 19-20% of their added amounts, whereas that of alpha-alanine was 11%. 4. It is concluded that dietary and urinary amino acids and urea which find their ways into the caeca are useful nitrogen sources for ammonia production by microflora in the caeca of the chicken.
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