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. 2018 Oct 17;13(6):1214–1223. doi: 10.1017/S1751731118002665

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© The Animal Consortium 2018

This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-ncnd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.

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Correlation of the different blood metabolites that were affected by the feed additive, as well as forage and grain intake and reticular pH below the subacute ruminal acidosis (SARA)-threshold, measured during a pure forage feeding regimen or a 65% concentrate-challenge. A heat map of Spearman correlation coefficients was generated for different concentration levels. The red color indicates a positive correlation coefficient, and the blue color represents a negative coefficient. ADMA=asymmetric dimethylarginine; AST=aspartate aminotransferase; BHBA=ß-hydroxybutyrate; C=carnitine; DOPA=dihydroxyphenylalanine; GLDH=glutamate dehydrogenase; GGT=γ-glutamyltransferase; Met-SO=methionine-sulfoxide; NEFA=non-esterified fatty acids; PC=phosphatidylcholine; aa=diacyl.