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Effect of Body Condition at Calving and Dietary Energy Supply on Milk Yield, Milk Quality and Dry-Matter Intake in Lactating Cows

Published online by Cambridge University Press:  22 November 2017

G.P. Jones  and
P.C. Garnsworthy
G.P. Jones
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD
P.C. Garnsworthy
Affiliation:
Department of Agriculture and Horticulture, University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD
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Extract

Recent work concluded that when lactating dairy cows are fed a relatively high energy diet (Garnsworthy and Jones, 1987), increasing the dietary undegradable protein (UDP) supply to those which are fat at calving leads to increased mobilisation of body fat reserves; however, increasing the UDP supply to those which are thin at calving results in reduction of voluntary feed intake, but does not affect the change in condition or milk yield. Little difference was found in yields of cows fat at calving receiving a relatively high UDP diet post calving, and cows thin at calving receiving a high or low UDP diet. Similar results were obtained with diets of lower energy and protein content (Jones and Garnsworthy, 1987). The investigation reported here aimed to examine the effect of body condition at calving on the response to energy level in the diet.

Type
Dairy Cow
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1988 , March 1988 , pp. 111
Copyright
Copyright © The British Society of Animal Production 1988

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References

Garnsworthy, P.C. and Jones, G.P. 1987. The influence of body condition at calving and dietary protein supply on voluntary food intake and performance in dairy cows. Animal Production 44: 347–353.Google Scholar
Jones, G.P. and Garnsworthy, P.C. 1987. The effect of body condition at calving and dietary protein supply on milk yield, milk quality and dry-matter of dairy cows. Proceedings of the 38th Annual Meeting of the European Association of Animal Production, Lisbon.Google Scholar