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Depression in silage intake by infusion of propionate into the rumen of the dairy cow

Published online by Cambridge University Press:  22 November 2017

M.H. Anil ,
J.N. Mbanya  and
J.H. Forbes
M.H. Anil
Affiliation:
AFRC Institute of Food Research, Bristol Laboratory, Langford, Bristol BS18 7DY
J.N. Mbanya
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, Leeds LS2 9JT
J.H. Forbes
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, Leeds LS2 9JT
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Extract

It is important to understand the factors which limit forage intake in ruminants. Most work carried out on sheep has now been extended to the dairy cow. The effects and possible roles of the short chain fatty acids In the control of forage intake in the dairy cow, in particular, hay intake have already been reported (Mbanya, 1988). One of the factors in question is propionate which depresses intake when given intraportally in sheep, but hay intake in the dairy cow was not affected by intraruminal propionate. The aim of this study was to test the role of propionate in the control of silage intake which has economical importance in the dairy industry.

Five rumen fistulated Friesian cows in early lactation (mean yield 25 kg/day) were used in a Latin-square experiment and individually fed grass silage (DM: 229g/kg; CP: 158g/kg DM; MAD fibre = 349g/kg DM; ether extract: 42g/kg DM; ash: 96g/kg DM) ad libitum plus 6 kg of concentrate fed twice daily. 3h intraruminal infusions of the following were made on different days: Control (no infusion), 4,6 and 8 moles of sodium propionate in 41 water. Silage intake was measured during the 3h and for 2h post-infusion.

Type
Prediction and Measurement of Intake by Cattle
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1989 , March 1989 , pp. 76
Copyright
Copyright © British Society of Animal Production 1989

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References

Mbanya, J.N. 1988. Effects of ruminal administration of acetate, propionate and distension on forage intake by dairy cows. PhD thesis. University of Leeds.Google Scholar