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The influence of body condition and level of feeding on the heat production of nonpregnant, nonlactating dairy cows

Published online by Cambridge University Press:  20 November 2017

R E Agnew ,
J W Birnie ,
F J Gordon  and
T Yan
R E Agnew
Affiliation:
The Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down, Northern Ireland, UK BT26 6DR
J W Birnie
Affiliation:
The Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down, Northern Ireland, UK BT26 6DR
F J Gordon
Affiliation:
The Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down, Northern Ireland, UK BT26 6DR
T Yan
Affiliation:
The Agricultural Research Institute of Northern Ireland, Large Park, Hillsborough, Co Down, Northern Ireland, UK BT26 6DR
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Extract

Chowdhury and Ørskov (1994) observed that heat production in sheep was reduced by approximately 10% below that at fasting when the animal was offered one third of the predicted maintenance requirement through intragastric nutrition. These authors also suggested that this indicated a glucose deficient state in the fasted animal, and that as a result the heat production at fasting was artificially raised. In agreement with Ørskov and MacLeod (1990), Chowdhury and Ørskov (1994) further stated that when measuring heat production to estimate basal metabolism animals should have their heat production measured when being offered one third of maintenance rather than fasting, although this was not tested by experiment. Birnie et al., (2000) reported that fasting heat production was influenced by the condition score of the cow. The objectives of this experiment were firstly to investigate the influence of maintenance and sub-maintenance levels of feeding on the observed heat production in nonpregnant, nonlactating dairy cows offered a more normal diet and secondly to further examine the influence of cow condition score on the fasting heat production.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 205
Copyright
Copyright © The British Society of Animal Science 2001

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References

Birnie, J.W., Agnew, R.E. and Gordon, F.J. 2000. The influence of body condition on the fasting energy metabolism of nonpregnant, nonlactating dairy cows. Journal of Dairy Science, 83, 1217–1223.Google Scholar
Chowdhury, S.A. and Ørskov, E.R. 1994. Implications of fasting on the energy metabolism and feed evaluation in ruminants. Journal of Animal Feed Science, 3, 161 – 169.Google Scholar
Ørskov, E.R. and MacLeod, N.A. 1990. Dietary induced thermogenesis and feed evaluation in ruminants. Proceedings Nutrition Society, 49, 227–237.Google Scholar