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Effect of silage type and supplementation with sucrose or lactic acid on rumen fermentation in dairy cows

Published online by Cambridge University Press:  24 November 2017

J G Doherty  and
C S Mayne
J G Doherty
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR
C S Mayne
Affiliation:
Agricultural Research Institute of Northern Ireland, Hillsborough, Co Down, BT26 6DR
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Extract

Recent studies have shown increased silage intake and improved milk fat concentration in dairy cows offered restricted compared to extensively fermented silages (Chamberlain et al., 1990; Mayne 1992). Changes in milk composition may be related to increased intake per se and/or alterations in rumen fermentation parameters. A study was therefore undertaken to examine the effects of silage fermentation type, dry matter intake and the addition of water soluble carbohydrate (WSC) or lactic acid on rumen fermentation parameters in dairy cows.

Two direct cut grass silages were prepared using either an inoculant (Ecosyl, 3 1/t, ICI. pic) or Maxgrass (BP Chemicals, 6 1/t). Five silage only treatments were offered to four ruminally fistulated dairy cows in a five period, partially balanced, changeover design experiment. Each period was of 4 weeks duration. Treatment 1: Inoculant treated silage (I), 2: Maxgrass silage (M), 3: Maxgrass ad-libitum (MAL), 4: Inoculant + sucrose (500 g/day) (IS), 5: Maxgrass + lactic acid (200 ml/day) (ML).

Type
Milk Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1993: Winter meeting , March 1993 , pp. 40
Copyright
Copyright © The British Society of Animal Production 1993

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References

Chamberlain, D.G., Robertson, S., Martin, P.A. and Jackson, D.A. (1990). Effects of the addition of ammonium salts of methanoic and propanoic acids and octanoic acids at ensiling on the nutritional value of silage for milk production. Proceedings of the Ninth Silage Conference, pp. 120–122, University of Newcastle-Upon-Tyne.Google Scholar
Mayne, C.S. (1992) An evaluation of the concentrate sparing effect of four silage additives. Animal Production, 54 : 153.Google Scholar