Hostname: page-component-7479d7b7d-c9gpj Total loading time: 0 Render date: 2024-07-11T23:13:34.045Z Has data issue: false hasContentIssue false
  • English
  • Français

The effect of asynchronous diets on the function of the rumen in the lactating dairy cow

Published online by Cambridge University Press:  05 November 2021

A.R. Henderson ,
P.C. Garnsworthy ,
J.R. Newbold  and
P.J. Buttery
A.R. Henderson
Affiliation:
University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LEI 2 5RD, UK
P.C. Garnsworthy
Affiliation:
University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LEI 2 5RD, UK
J.R. Newbold
Affiliation:
BOCM Pauls PO Box 39, 47 Key St., Ipswich, Suffolk, IP4 1BX, UK
P.J. Buttery
Affiliation:
University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LEI 2 5RD, UK
Get access

Extract

Sinclair et al. (1993) found that a diet formulated to be synchronous with regard to hourly release of nitrogen and energy increased microbial protein synthesis by 14% in sheep. Dairy cows in early lactation experience a shortfall of energy and protein, with available protein determining the overall efficiency of metabolism (MacRae and Lobley, 1986) and subsequent milk production. It is therefore necessary to maximise microbial protein yield during this period. In this study diets were designed for lactating dairy cows to contain the same feed ingredients, but to release nitrogen and energy in the rumen at different times. Rumen fermentation parameters, nutrient flows to the small intestine and production performance were investigated.

Type
Programme
Information
Proceedings of the British Society of Animal Science , Volume 1998 , 1998 , pp. 19
Copyright
Copyright © The British Society of Animal Science 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Faichney, G.J. 1975 The use of markers to partition digestion within the gastrointestinal tract of ruminants. In: Digestion and Metabolism in the Ruminant (Eds McDonald, I.W. and Warner, A.C.I.) pp. 261–276. Armidale, University of New England.Google Scholar
MacRae, J.C. & Lobley, G.E. 1986 Interactions between energy and protein. In: Control of Digestion and Metabolism in the Ruminant (Eds Milligan, C.P., Dobson, A. & Grovum, W.L.). Prentice-Hall, Englewood Cliffs, NJ, pp.367–385.Google Scholar
Ørskov, E.R. & McDonald, I. 1979 The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science 92: 499–503.CrossRefGoogle Scholar
Sinclair, L.A., Garnsworthy, P.C., Newbold, J.R. & Buttery, P.J. 1993 Effect of synchronising the rate of dietary energy and nitrogen release on rumen fermentation and microbial protein synthesis in sheep. Journal of Agricultural Science. 120: 251–263.10.1017/S002185960007430XCrossRefGoogle Scholar