Table 1.

Models tested and their adequacy to explain the data for all cattle. AIC, Akaike information criterion.

model	parameters affected by immune response	adequate fit to data?	number of parameters, km		AICm − AIC0
M0	α2, α3, α4, α5, r1, r2, r3	yes	26
M1	α3, α4, r2, r3	yes	20	−8.99	−281.99
M2	α4, r2, r3	yes	18	−7.32	−385.35
M3	α3, r2, r3	yes	18	−18.91	−362.19
M4	α3, α4, r3	no	18	−243.35	86.71
M5	α3, α4, r2	no	18	−148.16	−103.68
M6	r2, r3	no	16	−218.44	−63.12