Distribution of sheep into “normal” and “elevated” groups for serum Hp and SAA concentration across the time course of primary infestation withPsoroptes ovisand treatment with an endectocide (PIT trial)
* The status of APP levels in sheep sera (n = 12 for each time point) was determined by comparison to pre-infestation levels using the R Statistical Package.
** All sheep were treated with an injectable endectocide at week 6 post-infestation. In these analyses the animals were described as being “normal” as in day 0 (pre-infestation) or “elevated”. As the results showed a normal distribution, all values above the 0.999 quantile of the distribution were considered to be elevated, giving a 99.9% specificity and undefined sensitivity.