Figure 7 . Model-based probabilities of cattle salivating across the six study days, for the three treatment groups.
There was no significant Treatment × Day interaction for occurrence of salivation (P = 0.496), nor was there an overall main effect of Treatment (P = 0.401). Model-based probabilities of salivating are shown (Figure 7). However, from initial high rates of salivating, there was a significant decline over the study period (P = 6.4×10–12), with an apparent faster rate of decline for the two treatment groups compared with the control group. There were no significant effects of Age (P = 0.619), Breed (P = 0.096) nor Sex (P = 1.000) on instances of salivation.
The results of the analysis to compare the number of days that cattle are salivating is displayed (Table 4). As in the previous analysis, no significant effects of Treatment, nor Age, Breed or Sex were detected (all P > 0.1). However, consistent with the previous analysis, the two treatment groups spent less time salivating.
Table 4 . Analysis of the number of days that cattle are salivating.