3.2.6. Cholesterol

Both 2- and 3-year-old stallions fed knotweed showed a decrease in blood cholesterol levels during Experiment 2 while those not fed knotweed experienced an increase. The statistical difference between these two groups was significant at *p* = 0.022. However, when the warm-blooded and cold-blooded were compared separately, the effect of knotweed on cholesterol was only significant in the cold-blooded horses (Figure 7).

**Figure 7.** The differences in the blood cholesterol levels of 2- and 3-year-old stallions fed with and without knotweed from the beginning to the end of Experiment 2, comparing warm-blooded and cold-blooded. Statistically different values at *p* ≤ 0.05 are marked with \*. N.S. = non-significant values.
