Extended Data Fig. 6: Critically important AMU costs of 74 UK breed-to-finish pig systems by a) breeding and b) finishing husbandry type.
From: Trade-offs in the externalities of pig production are not inevitable

There were significant differences between breeding husbandry types (χ2 = 10.9, df=2, p < 0.01, n = 43) but not finishing husbandry types (Kruskal-Wallis p = 0.1, n = 43). Post-hoc Dunn’s analyses found that critically important AMU cost was higher in indoor-bred systems compared with outdoor-bred systems. Letters above boxplots show the results from Dunn’s post-hoc tests, controlled for multiple comparisons using the Holm method, with different letters indicating significant differences between median values (p > 0.05). Upper and lower hinges correspond to the first and third quartiles. Upper and lower whiskers extend to 1.5 times the interquartile range from upper and lower hinges respectively. The middle horizontal bar is the median.