Authors
BEA Borhami, K El-Shazly, M.A. Akkada, A.R. Abou, Naga, A.M Nour, M.A Abaza
Publication date
1979/11/1
Journal
Journal of animal science
Volume
49
Issue
5
Pages
1306-1311
Publisher
American Society of Animal Science
Description
Two adult Fresian bulls fitted with permanent rumen fistulae were fed a high fiber diet in which 33% of the nitrogen was urea. The ration was offered in two equal portions every 12 hours. Samples of whole rumen contents were withdrawn before feeding and at 1, 2, 4, 6, 8 and 10 hr after feeding. Rates of ammonia-N incorporation into microbial protein using (15 NH 4) 2 SO 4 (30% enriched), and volatile fatty acids were determined in each sample in vitro. Rumen volumes were measured using CrEDTA. Microbial protein synthesis determined by the use of 15 N was compared with that estimated by DAP and AEP Markers.
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BEA Borhami, K El-Shazly, AR Abou Akkada, MA Naga… - Journal of animal science, 1979
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