Fig. 3

Cumulative hair growth (mm) of dogs fed a low or adequate selenium diet. Hair growth was measured weekly in the groin of Labrador retrievers fed a diet containing a low (6.5 μg/MJ) or adequate (46.1 μg/MJ) concentration of selenium. Black triangles are dogs on the adequate selenium diet, open squares are dogs on the low selenium diet. Values at week zero indicate the average baseline values at weeks 2, 5 and 8 of the pre-feed period, where hair had been removed at week 0. Symbols represent the means and error bars indicate their standard errors, based on the raw data