360.
Kim SW, Kawashima R, Uesaka S. Importance of trace elements in farm animal feeding. XXXIX. Action mechanism of effects of amino acid and protein on trace element toxicity in cellulose digestion by rumen bacteria. Kyoto Daigaku Shokuryo Kagaku Kenkyusho Hokoku.m 1969; 32:17-23. (CA75) [Addn. of Na4EDTA with urea weakened the toxicities of Cu and Zn; the effect was almost the same as when casein was used as N source. F toxicity was weakened by addn. of urea to casein or casamino acids as N sources. When urea was used as N source, addn. of F and Mo greatly decreased the NH3 concn. in the medium; addn. of F and Mo had little effect on NH3 concn. in the medium when casamino acids were used as N source.]
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