In the study the energy metabolic parameters and requirement for the 4 ~ 8 week old growing pheasants were studied by means of the gradient feeding test, metabolic test and comparative slaughter test.

In addition to scoring lower on memory tests, those with metabolic syndrome were also 13% more likely to show cognitive impairment on the visual test.

To simulate aging, the same bees were then placed in plastic tubes and exposed to a high-oxygen environment, a metabolic stress test.