Metabolizable energy (ME; kcal/kg; means and standard deviation, SD), were determined in feline digestibility studies and compared to those calculated using predictive equations.

a<p>Predicted ME using equation with modified Atwater factors <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054405#pone.0054405-AAFCO1" target="_blank">[4]</a>.</p>b<p>The difference between measured and estimated ME.</p>c<p>The absolute value of the difference between measured and estimated ME.</p>d<p>Predicted ME using NRC <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054405#pone.0054405-NRC1" target="_blank">[2]</a> equations.</p>e<p>Predicted ME using equation developed from the experimental animal feeding studies.