Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-03T02:37:10.019Z Has data issue: false hasContentIssue false
  • English
  • Français

The development of maintenance energy requirement and energetic efficiency for lactation from production data of lactating dairy cows

Published online by Cambridge University Press:  20 November 2017

R. E. Agnew ,
T. Yan ,
J. J. Murphy ,
C. P. Ferris  and
F. J. Gordon
R. E. Agnew
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, Northern Ireland BT26 6DR, UK
T. Yan
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, Northern Ireland BT26 6DR, UK
J. J. Murphy
Affiliation:
Teagasc, Moorepark Research Centre, Fermoy, Co. Cork, Ireland
C. P. Ferris
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, Northern Ireland BT26 6DR, UK
F. J. Gordon
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, Northern Ireland BT26 6DR, UK
Get access

Extract

The energy feeding systems currently adopted for dairy cows in Western Europe and North America were developed from calorimetric data published 30 years ago. However, the calorimetric measurements were usually undertaken with a small number of trained animals, housed for a short period in respiration chambers. The objective of the present study was to use production data to develop the metabolisable energy (ME) requirement for maintenance (MEm) and the efficiency of ME use for lactation (kl) for dairy cows.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 39
Copyright
Copyright © The British Society of Animal Science 2002

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

AFRC. 1993. Energy and protein requirements of ruminants. CAB International, Wallingford, Oxon, UK.Google Scholar
AFRC. 1990. Technical Committee on Responses to Nutrients, Report No 5. Nutrition Abstracts & Reviews-B 60: 729.Google Scholar
INRA. 1989. Ruminant nutrition - Recommended allowances and feed tables. John Libbey Eurotext, Paris.Google Scholar
NRC. 2001. Nutrient requirements of dairy cattle. Seventh revised edition, National Academy Press, Washington D. C. Google Scholar
SCA. 1990. Feeding standards for Australian livestock - Ruminants. CSIRO, Australia.Google Scholar
Van Es, A. J. H., 1978. Feed evaluation for ruminants. Livestock Production Science 5: 331–345.CrossRefGoogle Scholar