Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-17T13:58:58.781Z Has data issue: false hasContentIssue false
  • English
  • Français

Validation of models commonly used to predict feed intake of lactating dairy cattle

Published online by Cambridge University Press:  20 November 2017

T.W.J. Keady ,
C.S. Mayne  and
D.J. Kilpatrick
T.W.J. Keady
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down BT26 6DR, Northern Ireland
C.S. Mayne
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down BT26 6DR, Northern Ireland
D.J. Kilpatrick
Affiliation:
Department of Agriculture and Rural Development, Newforge Lane, Belfast BT9 5PX, Northern Ireland
Get access

Extract

Accurate prediction of daily food intake is a fundamental prerequisite of any nutritional model designed to provide feeding recommendations for lactating dairy cattle. Consequently, much research effort has been expended over the last twenty years in developing food intake prediction models. These range from relatively simple multiple regression models to much more complex theoretical models embracing animal and food characteristics and environmental influences. However, given the major changes in the types of diet now offered to dairy cows, coupled with changes in genetic merit/milk production potential, it is important to examine if the food intake prediction models currently used within the British Isles are appropriate for to-day’s dairy cow. This paper examines the accuracy of prediction of a range of intake models for diets based on grass silage, concentrates and brewers grains.

Type
Threatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 1
Copyright
Copyright © The British Society of Animal Science 2001

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

Dulphy, J.P., Demarquilly, C. and Rémond, B. 1989. Quantités d’herbe ingérées par les vaches laitières, les génisses et les moutons: effet de quelques facteurs de variation et comparaison entre ces types d’animaux. Annales de Zootechnie, 38: 107–120.Google Scholar
Lewis, M. 1981. Equation for predicting silage intake by beef and dairy cattle. Proceedings of the Sixth Silage Conference, Edinburgh, pp. 35–36.Google Scholar
Milligan, R.A., Chase, L.E., Sniffen, C.J. and Knoblanch, W.A. 1981. Least-cost ration balanced dairy rations. A computer program users manual. Animal Science, Mimes, 54 Cornell University, Ithaca, New York.Google Scholar
Oldham, J.D., Emmans, G. and Friggens, N. 1998. Development of predictive systems to relate animal and feed characteristics to amounts and patterns of forage and total food intake by cows. In: Optimisation of Forage Quality and Intake by Ruminants. MAFF RUMINT Report, D504.Google Scholar
Vadiveloo, J. and Holmes, W. 1979. The prediction of the voluntary feed intake of dairy cows. Journal of Agricultural Science, 93: 553–562.Google Scholar