PMID- 24119801 OWN - NLM STAT- MEDLINE DCOM- 20150911 LR - 20181202 IS - 1525-3198 (Electronic) IS - 0022-0302 (Linking) VI - 96 IP - 12 DP - 2013 TI - Effects of grain, fructose, and histidine feeding on endotoxin and oxidative stress measures in dairy heifers. PG - 7881-91 LID - S0022-0302(13)00695-4 [pii] LID - 10.3168/jds.2013-7113 [doi] AB - Ruminal endotoxin and plasma oxidative stress biomarker concentrations were studied in dairy heifers challenged with grain, fructose, and histidine in a partial factorial study. Holstein-Friesian heifers [n=30; average body weight (BW) of 359.3+/-47.3 kg] were randomly allocated to 5 treatment groups: (1) control (no grain); (2) grain [crushed triticale at 1.2% of BW dry matter intake (DMI)]; (3) grain (0.8% of BW DMI) + fructose (0.4% of BW DMI); (4) grain (1.2% of BW DMI) + histidine (6g/head); and (5) grain (0.8% of BW DMI) + fructose (0.4% of BW DMI) + histidine (6 g/head). Rumen samples were collected by stomach tube 5, 65, 115, 165, and 215 min after diet consumption and blood samples at 5 and 215 min after consumption. Rumen fluid was analyzed for endotoxin concentrations. Plasma was analyzed for concentrations of the following oxidative stress biomarkers: reactive oxygen metabolites (dROM), biological antioxidant potential (BAP), advanced oxidation protein products, and ceruloplasmin, and activity of glutathione peroxidase. Dietary treatment had no effect on concentrations of endotoxin or oxidative stress biomarkers. We observed no interactions of treatment by time. Ruminal concentrations of endotoxin decreased during the sampling period from 1.12x10(5) +/- 0.06 to 0.92x10(5) endotoxin units/mL +/- 0.05 (5 and 215 min after diet consumption, respectively). Concentrations of dROM and the oxidative stress index (dROM/BAP x 100) increased over the sampling period, from 108.7 to 123.5 Carratelli units (Carr U), and from 4.1 to 4.8, respectively. Ceruloplasmin concentrations markedly declined 5 min after the consumption of diets, from 190 to 90 mg/L over the 215-min sampling period. Overall, a single feeding challenge for dairy cattle with grain, fructose, and histidine, and combinations thereof, may not be sufficient to induce marked changes in endotoxin or oxidative stress biomarker concentrations. CI - Copyright (c) 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved. FAU - Golder, H M AU - Golder HM AD - Dairy Science Group, Faculty of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia 2570; SBScibus, Camden, New South Wales, Australia 2570. Electronic address: heleng@sbscibus.com.au. FAU - Lean, I J AU - Lean IJ FAU - Rabiee, A R AU - Rabiee AR FAU - King, R AU - King R FAU - Celi, P AU - Celi P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131011 PL - United States TA - J Dairy Sci JT - Journal of dairy science JID - 2985126R RN - 0 (Endotoxins) RN - 30237-26-4 (Fructose) RN - 4QD397987E (Histidine) SB - IM MH - Animal Feed/*analysis MH - Animal Nutritional Physiological Phenomena MH - Animals MH - Body Weight MH - Cattle/blood/*physiology MH - Diet/veterinary MH - Edible Grain/*metabolism MH - Endotoxins MH - Female MH - Fructose/*pharmacology MH - Histidine/*pharmacology MH - Oxidative Stress/*drug effects MH - Poaceae/metabolism MH - Rumen OTO - NOTNLM OT - endotoxin OT - fructose OT - histidine OT - oxidative stress EDAT- 2013/10/15 06:00 MHDA- 2015/09/12 06:00 CRDT- 2013/10/15 06:00 PHST- 2013/06/10 00:00 [received] PHST- 2013/08/21 00:00 [accepted] PHST- 2013/10/15 06:00 [entrez] PHST- 2013/10/15 06:00 [pubmed] PHST- 2015/09/12 06:00 [medline] AID - S0022-0302(13)00695-4 [pii] AID - 10.3168/jds.2013-7113 [doi] PST - ppublish SO - J Dairy Sci. 2013;96(12):7881-91. doi: 10.3168/jds.2013-7113. Epub 2013 Oct 11.