Skip to main content
×
Home
    • Aa
    • Aa

The estimation of the digestibility and metabolizable energy content of ruminant feedingstuffs from the gas production when they are incubated with rumen liquor in vitro

  • K. H. Menke (a1), L. Raab (a1), A. Salewski (a1), H. Steingass (a1), D. Fritz (a1) and W. Schneider (a1)...
Summary
SUMMARY

A rapid method for measuring gas production during incubation of feedingstuffs with rumen liquor in vitro is described. Gas production in 24 h from 200 mg feed dry matter was well correlated with digestibility of organic matter, determined in vivo with sheep. Multiple regression analysis, when it included data from proximate analysis, resulted in an equation (R = 0·98) for prediction of metabolizable energy content, based on 30 experiments with rations varying in protein and crude fibre content, and 59 other experiments with concentrates. Energy content was in the range of 7·7–13·2 MJ ME/kg D.M. (± S.D. = 11·17 ± 1·08). The residual standard deviation of the equation was 0·25 MJ. Gas production was measured in calibrated syringes. The only chemical determinations needed are dry matter, protein and fat. Differences in activity between batches of rumen liquor are corrected by reference to gas production with standard feedingstuffs (hay meal and maize starch).

Copyright
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

K. H. Menke & U. Ehrensvärd (1974). Die Bestimmung der Stoffbilanz und die Berechnung der Stöchiometrie und der Energiebilanz bei der Vergärung von Pansensaft in vitro. Zeitschrift für Tierphysiologie, Tierernährung und Futlermittelkunde 34, 2435.

J. M. A. Tilley & R. A. Terry (1963). A two-stage method for the in vitro digestion of forage crops. Journal of the British Grassland Society 18, 104111.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

The Journal of Agricultural Science
  • ISSN: 0021-8596
  • EISSN: 1469-5146
  • URL: /core/journals/journal-of-agricultural-science
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 1
Total number of PDF views: 137 *
Loading metrics...

Abstract views

Total abstract views: 1754 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 22nd September 2017. This data will be updated every 24 hours.