Table 1 Prevalences of S. chromogenes infected heifers and S. chromogene s infected teat apexes per age class and mean number of infected teat apexes per heifer
From: Prevalence of Teat Apex Colonizations by S. Chromogenes in Young and Primigravid Dairy Heifers
Age class | N heifers | Prevalence % of heifers | OR 95% CI | Prevalence % of apexes | Mean infected number of infected teat apexes per heifer |
|---|---|---|---|---|---|
8 – 12 months | 22 | 91% |  | 45% | 2 |
gt12 – 20 months | 52 | 77% | 08 01 – 49 | 34% | 175 |
gt20 – 28 months | 37 | 351% | 54 11 – 269 | 162% | 185 |
gt28 – 34 months | 12 | 500% | 100 16 – 631 | 271% | 216 |