Table 1 Median somatic cell count (× 103 cells/mL) for two herds (A, B) and for two pre-milking teat disinfection treatments (PTD: that received pre-milking teat disinfectant and NPTD: did not receive disinfectant) at five sampling dates during lactation
From: Effect of pre-milking teat disinfection on new mastitis infection rates of dairy cows
Herd | A (n = 97) | B (n = 167) | p-value | |||
161 (127–205) | 169 (144–198) | 0.54 | ||||
Treatment | PDT | NPDT | ||||
169 (144–198) | 170 (145–199) | 0.93 | ||||
Herd | A | B | ||||
Sample day | PTD | NPTD | p-value | PTD | NPTD | p-value |
1-post- calving | 98 (68–141) | 125 (87–180) | 0.98 | 352 (272–456) | 409 (316–530) | 0.99 |
2-May | 34 (23–50) | 31 (21–46) | 1.00 | 75 (58–97) | 80 (62–104) | 1.00 |
3-July | 156 (109–223) | 119 (83–171) | 0.97 | 120 (93–156) | 134 (104–174) | 0.99 |
4-August | 231 (160–333) | 279 (194–402) | 0.99 | 134 (103–173) | 115 (88–148) | 0.99 |
5-October | 1300 (905–1877) | 1411 (981–2025) | 1.00 | 301 (230–392) | 246 (189–321) | 0.96 |