5.7. Statistical Analysis
Data were analyzed using the GLIMMIX procedure of SAS (version 9.4; SAS Institute, Cary, NC, USA) as a replicated 4 × 4 Latin square design. Data were checked for normality using the UNIVARIATE procedure of SAS (version 9.4; SAS Institute) before analysis. Variables that were measured repeatedly over time (pH, lactate, VFA, NHIn addition, linear, quadratic, and cubic contrasts were tested to examine trends in effects of the dose. Significance was declared at 