Journal
ANIMAL FEED SCIENCE AND TECHNOLOGY
Volume 171, Issue 2-4, Pages 246-250Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.anifeedsci.2011.11.006
Keywords
Plant extracts; Calves; Metabolites
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Funding
- Xunta de Galicia (Spain) [XUGA 2002/CG320]
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This study investigated the in vivo effects of a commercial blend of plant extracts (carvacrol, cinnamaldehyde and capsaicin) on serum metabolic parameters closely connected with energy and protein metabolism (glucose; L-lactate; non-esterified fatty acids, NEFA; urea nitrogen, SUN; creatinine: total protein, TSP) and enzymes associated with hepatic function (aspartate-aminotransferase, AST and gamma-glutamyl transferase, GGT) in finishing-stage Belgian Blue bull calves maintained in a commercial feedlot. Monitoring was performed over 86 days in 24 animals randomly allotted to two groups: (1) a control group (CTR, no supplementation; n = 10), and (2) a group receiving dietary supplementation with a commercial blend of plant extracts (PEX, 100 mg/kg DM of concentrate; n = 14). Under the conditions of our study, supplementation with the commercial blend did not give detrimental effects, but the opposite: the decrease in serum L-lactate, NEFA and creatinine levels and the increase in SUN concentrations; suggests an improvement in the energy status and protein turnover of the supplemented animals. (C) 2011 Elsevier B.V. All rights reserved.
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