Data and code from: Mycotoxin contamination & the nutritional content of corn targeted for animal feed

This dataset contains raw data (Excel spreadsheet, .xlsx), R statistical code (RMarkdown notebook, .Rmd), and rendered output of the R notebook (HTML). This comprises all raw data and code needed to reproduce the analyses in the manuscript:

Pokoo-Aikins, A., C. M. McDonough, T. R. Mitchell, J. A. Hawkins, L. F. Adams, Q. D. Read, X. Li, R. Shanmugasundaram, E. Rodewald, P. Acharya, A. E. Glenn, and S. E. Gold. 2024. Mycotoxin contamination and the nutritional content of corn targeted for animal feed. Poultry Science, 104303. DOI: 10.1016/j.psj.2024.104303.

The data consist of the mycotoxin concentration, nutrient content, and color of different samples of corn (maize). We model the effect of mycotoxin concentration on the concentration of several different nutrients in corn. We include main effects of the different mycotoxins as well as two-way interactions between each pair of mycotoxins. We also include analysis of mycotoxin effects on the L variable from the color analysis, because it seems to be the one most important for determining the overall color of the corn. We use AIC to compare the models with and without interaction terms. We find that the models without interaction terms are better so we omit the interactions. We present adjusted R-squared values for each model as well as the p-values associated with the average slopes (effect of each mycotoxin on each nutrient). Finally, we produce the figures that appear in the above cited manuscript.

Column metadata can be found in the Excel spreadsheet.

Included files

• Combined LCMS NIR Color data.xlsx: Excel file with all raw data (sheet 1) and column metadata (sheet 2).
• corn_mycotoxin_analysis_archived.Rmd: RMarkdown notebook with all analysis code
• corn_mycotoxin_analysis_archived.html: rendered output of R notebook