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Effect of the content of vegetable crude protein in the diet on the utilization of urea in dairy cows. 1. Digestion of nitrogen and utilization of urea for bacterial protein synthesis in the rumen

Voigt, J.; Piatkowski, B.; Krawielitzki, R.; Sommer, A.; Ceresnakova, Z.; Engelmann, H.; Vancisin, J.; Girschewski, H.; Chrastinova, L.

Archiv fur Tierernahrung 33(4/5): 327-340

1983

ISSN/ISBN: 0003-942X
Accession: 001190159
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The utilization of feed urea in the rumen was tested in 2 experiments with a total of 4 newly lactating dairy cows with rumen and duodenal re-entrant cannulae. With the energy supply constant in each case, the rations in experiment A contained 8.7, 12.4 and 14.6 and those of experiment B 10.7, 13.7 and 17.1% crude plant protein in DM. After supplementation with 120 and 150 g urea daily there were 11.9, 15.7 and 17.8 (A) and 13.8, 16.7 and 20.2 (B) % crude protein in DM.

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Related References

Voigt, J.; Piatkowski, B.; Krawielitzki, R.; Sommer, A.; Ceresnáková, Z.; Engelmann, H.; Vancisin, J.; Girschewski, H.; Chrastinová, L. 1983: Effect of the content of plant crude protein in the ration on the utilization of urea by the milk cow. 1. Nitrogen digestibility and utilization of urea for bacterial protein synthesis in the rumen Archiv für Tierernahrung 33(4-5): 327-340
Tarakanow, B.W.; Sommer, A.; Voigt, J. 1984: Effect of the content of crude plant protein in the feed on the utilization of urea in dairy cows. 3. Incorporation of 15N from urea in rumen bacteria and protozoa Archiv fur Tierernahrung 34(5/6): 397-409
Voigt, J.; Piatkowski, B.; Ceresnakova, Z.; Krawielitzki, R.; Adam, K. 1984: Effect of the content of crude plant protein in the feed on the utilization of urea in dairy cows. 2. Metabolism of urea Archiv fur Tierernahrung 34(5/6): 387-395
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