Concentration of ammonia and synthesis of microbial protein in the forestomach of sheep fed on a diet with various sources of nitrogen

Kurilov, N.V.; Turchinskii, V.V.

Byulleten' Vsesoyuznogo Nauchno issledovatel' skogo Instituta Fiziologii, Biokhimii i Pitaniya Sel' skokhozyaistvennykh Zhivotnykh (2/58): 24-28


Accession: 000845542

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Inclusion of urea in the ration of sheep induced a sharp rise in ammonia concentration in the rumen after feeding. After a meal with plant proteins, NH3 in the rumen increased more gradually and fluctuated less widely. Combined feeding with readily-soluble proteins and urea increased both the minimum value and average daily concentrations of NH3 in the rumen. The stage of conversion of dietary protein into microbial protein depended on the solubility of the N source. The presence in the ration of highly soluble N sources, to a significant extent, facilitated microbial synthesis in the forestomach.