Table 1.
Cryptosporidium prevalence in veal herds found in Brittany farms according to animal age.
| Animal age | ||||
|---|---|---|---|---|
| Farm | 5 weeks No. positive/No. sample (%) |
15 weeks No. positive/No. sample (%) |
22 weeks No. positive/No. sample (%) |
Total number of positive animals* (%) |
| CA1 | 1/6 (16.6%) | 2/6 (33.3%) | 1/6 (16.6%) | 4/6 (66.6%) |
| CA2 | 3/10 (30%) | 4/10 (40%) | 3/10 (30%) | 8/10 (80%) |
| CA3 | 4/10 (40%) | 6/10 (60%) | 0/10 (0%) | 6/10 (60%) |
| MO1 | 0/10 (0%) | 0/10 (0%) | 1/10 (10%) | 1/10 (10%) |
| IV1 | 6/10 (60%) | 7/10 (70%) | 1/10 (10%) | 10/10 (100%) |
| IV2 | 4/10 (40%) | 4/10 (40%) | 3/10 (30%) | 6/10 (60%) |
| IV3 | 2/8 (25%) | 7/8 (87.5%) | 3/8 (37.5%) | 8/8 (100%) |
| IV4 | 3/10 (30%) | 4/10 (40%) | 0/10 (0%) | 6/10 (60%) |
| IV5 | 4/10 (40%) | 2/10 (20%) | 3/10 (30%) | 5/10 (50%) |
| MA1 | 8/10 (80%) | 3/10 (30%) | 1/10 (10%) | 9/10 (90%) |
| MA2 | 7/10 (70%) | 3/10 (30%) | 1/10 (10%) | 7/10 (70%) |
| MA3 | 6/10 (60%) | 6/9** (66.6%) | 0/9** (0%) | 8/10 (80%) |
| MA4 | 6/10 (60%) | 4/9** (44.4%) | 1/9** (11.1%) | 6/10 (60%) |
| MA5 | 7/8 (87.5%) | 6/8 (75%) | 0/8 (0%) | 8/8 (100%) |
| MA6 | 7/10 (70%) | 3/10 (30%) | 2/10 (20%) | 8/10 (80%) |
| Total | 68/142 (47.9%) |
59/140 (42.1%) |
20/140 (14.3%) |
100/142 (70.4%) |
* A calf is considered to be positive if at least one out of the three samples is positive.
**The number of animals is 9 because one calf died between the age of 5 and 15 weeks.