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Combined effects of intraruminal application of acetate, propionate and distension on silage intake by dairy cows

Published online by Cambridge University Press:  22 November 2017

J.N. Mbanya
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, LS2 9JT
M.H. Anil
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, LS2 9JT
J.M. Forbes
Affiliation:
Department of Animal Physiology and Nutrition, University of Leeds, LS2 9JT
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Extract

There Is considerable evidence that end products of carbohydrate fermentation and distension of the rumen are involved in limiting intake in ruminants. Intraruminal Infusion of acetate or propionate (Montgomery et al., 1963) distension of the rumen (Campling and Balch, 1961) depressed hay Intake in cattle It is unlikely, however, that any single factor is entirely responsible for terminating feeding but that the effects of the changes that occur In the rumen during a meal, such as production of SCFA, changes In pH, osmolality, rumen distension, are Interpreted as a whole to induce satiety.

In a previous study with dairy cows distension of the rumen together with Intraruminal infusions of sodium acetate and sodium propionate had additive effects on hay Intake (Anil et al, 1987) and a similar experiment has now been carried out with silage.

Type
Prediction and Measurement of Intake by Cattle
Copyright
Copyright © British Society of Animal Production 1989

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References

Adams, G.B. and Forbes, J.M. 1981. Proceedings of the the Nutrition Society, 40 44A.Google Scholar
Anil, M.H., Forbes, J.M. and Mbanya, J.N. 1987. Journal of Physiology, 386 61P.Google Scholar
Campling, R.C. and Balch, C.C. 1961. British Journal of Nutrition, 15 523530.Google Scholar
Montgomery, M.J., Schultz, L.H. and Baumgardt, B.R. 1963. Journal of Dairy Science, 48 13801384.Google Scholar