Erratum to: Evaluation of chemical castration with calcium chloride versus surgical castration in donkeys: testosterone as an endpoint marker.

Unfortunately, after publication of this article [1] it was noticed that an incorrect version of Fig. 8 (Fig. 1 here) was introduced during the production process. The correct figure can be seen below. The original article has also been updated to reflect this.

Fig. 1

Serum concentrations of testosterone in both (S) and (C) groups. Graphic representation of changes in serum testosterone levels of donkeys at day 0 (pre-castration) vs. days 15, 30, 45, and 60 following surgical or chemical castration. Values are expressed as means ± SEM, n = 6 animals per group. Mean values are significantly different by repeated measures ANOVA followed by Tukey post-test. **P < 0.01 vs. day 0; ***P < 0.001 vs. day 0