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Microbial activity in grass-fed in-vitro continuous cultures in response to infusion of graded levels of soluble sugars

  • M.R.F. Lee (a1), D.K. Leemans (a1), D.R. Davies (a1), R.J. Merry (a1), J. M. Moorby (a1), M.O. Humphreys (a1), M.K. Theodorou (a1), J.C. MacRae (a2) and N. D. Scollan (a1)...

Extract

Novel lines of high sugar ryegrass have been shown to increase the efficiency of N use and milk production in zero-grazed cattle (Miller et al., 1999). An experiment was carried out to determine whether this was in part due to an increase in the efficiency of microbial protein synthesis in response to the amount and availability of water soluble carbohydrate (WSC) increasing the balance between energy and nitrogen supply to the rumen microbial population.

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Carro, M.D., Miller, E.L., 1999, Effect of supplementing a fibre basal diet with different nitrogen forms on ruminal fermentation and microbial growth in an in-vitro semi-continuous culture system (RUSITEC), British Journal of Nutrition, Vol. 82, pp. 149.
Czerkawski, J.W., Breckenridge, G., 1977, Design and development of a long-term rumen simulation technique (RUSITEC), British Journal of Nutrition, Vol. 38, pp. 371.
Lawes Agricultural Trust, 1997, Gentstat 5, Rothamstead Experimental Station, Harpendon, Hertfordshire, UK.
Miller, L.A., Neville, M.A., Baker, D.H., Evans, R.T., Theodorou, M. K., MacRae, J. C., Humphreys, M. O., Moorby, J. M., 1999, Milk production from dairy cows offered perennial ryegrass selected for high water soluble carbohydrate concentrations compared to a control grass, Proceedings of the British Society of Animal Science 1999, pp. 208.

Microbial activity in grass-fed in-vitro continuous cultures in response to infusion of graded levels of soluble sugars

  • M.R.F. Lee (a1), D.K. Leemans (a1), D.R. Davies (a1), R.J. Merry (a1), J. M. Moorby (a1), M.O. Humphreys (a1), M.K. Theodorou (a1), J.C. MacRae (a2) and N. D. Scollan (a1)...

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