Table 1 Cryptosporidium prevalence in veal herds found in Brittany farms according to 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%)