Journal article
Effects of grain, fructose, and histidine on ruminal pH and fermentation products during an induced subacute acidosis protocol
Journal of Dairy Science, Vol.95(4), pp.1971-1982
2012
Abstract
The effects of grain, fructose, and histidine on ruminal pH and fermentation products were studied in dairy cattle during an induced subacute acidosis protocol. Thirty Holstein heifers were randomly allocated to 5 treatment groups: (1) control (no grain); (2) grain [fed at a crushed triticale dry matter intake (DMI) of 1.2% of body weight (BW)]; (3) grain (0.8% of BW DMI). +. fructose (0.4% of BW DMI); (4) grain (1.2% of BW DMI). +. histidine (6. g/head); and (5) grain (0.8% of BW DMI). +. fructose (0.4% of BW DMI). +. histidine (6. g/head) in a partial factorial arrangement. Heifers were fed 1. kg of grain daily with ad libitum access to ryegrass silage and alfalfa hay for 10. d. Feed was withheld for 14. h before challenge day, on which heifers were fed 200. g of alfalfa hay and then the treatment diets immediately thereafter. Rumen samples were collected 5. min after diet ingestion, 60. min later, and at 3 subsequent 50-min intervals. Grain decreased ruminal pH and increased ammonia, total volatile fatty acid (VFA), acetate, butyrate, propionate, and valerate concentrations compared with controls. The addition of grain had no effect on ruminal d- and l-lactate concentrations. Fructose markedly decreased ruminal pH and markedly increased d- and l-lactate concentrations. Fructose increased total VFA and butyrate and decreased valerate concentrations. Although histidine did not have a marked effect on ruminal fermentation, increased concentrations of histamine were observed following feeding. This study demonstrates that the substitution of some grain for fructose can lower ruminal pH and increase VFA and lactate concentrations, warranting further investigation into the role of sugars on the risk of acidosis in dairy cattle.
Details
- Title
- Effects of grain, fructose, and histidine on ruminal pH and fermentation products during an induced subacute acidosis protocol
- Authors/Creators
- H.M. Golder (Author/Creator)P. Celi (Author/Creator)A.R. Rabiee (Author/Creator)C. Heuer (Author/Creator)E. Bramley (Author/Creator)D.W. Miller (Author/Creator)R. King (Author/Creator)I.J. Lean (Author/Creator)
- Publication Details
- Journal of Dairy Science, Vol.95(4), pp.1971-1982
- Publisher
- American Dairy Science Association
- Identifiers
- 991005541600707891
- Copyright
- © 2012 American Dairy Science Association.
- Murdoch Affiliation
- School of Veterinary and Biomedical Sciences
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.51 Dairy & Animal Sciences
- 3.51.84 Ruminant Nutrition
- Web Of Science research areas
- Agriculture, Dairy & Animal Science
- Food Science & Technology
- ESI research areas
- Agricultural Sciences