Table 1 Dairy cows excreting D. viviparus larvae (positive farms are marked in bold), BTM ELISA results (available for autumn only) and occurrence of coughing (our own and farmers’ observations; data available for autumn only)
Herd | Cows excreting lungworm larvae/total cows (%) | BTM ELISA ODR value | Occurrence of coughing and larvae excretion in autumn 2015 | |||||
|---|---|---|---|---|---|---|---|---|
No. | Size | Summer 2015 | Autumn 2015 | Farmer observation | Our observation | |||
Occurrence of coughing | Occurrence of coughing | No. of coughing cows/total cows (%) | No. of coughing cows positive for larvae excretion | |||||
1 | 82 | 0/59 (0) | 0/74 (0) | 0.125 | – | + | 1/74 (1.4) | 0 |
2 | 65 | 0/55 (0) | 0/54 (0) | 0.120 | – | + | 2/54 (3.7) | 0 |
3 | 215 | 7/164 (4.3) | 23/195 (11.8) | 0.342 | + | + | 25/195 (12.8) | 3 |
4 | 90 | 0/70 (0) | 0/80 (0) | 0.230 | – | + | 7/80 (8.8) | 0 |
5 | 105 | 0/74 (0) | 0/58 (0) | 0.118 | – | + | 1/58 (1.7) | 0 |
6 | 70 | 1/68 (1.5) | 8/53 (15.1) | 0.236 | – | + | 1/53 (1.9) | 0 |
7 | 80 | 0/54 (0) | 0/54 (0) | 0.139 | – | – | 0/54 (0) | 0 |
8 | 57 | 0/54 (0) | 0/54 (0) | 0.165 | – | – | 0/54 (0) | 0 |
9 | 70 | nd | 4/50 (8.0) | 0.196 | + | + | 4/50 (8.0) | 0 |
10 | 16 | 0/15 (0) | 0/15 (0) | 0.113 | – | – | 0/15 (0) | 0 |
11 | 79 | 1/75 (1.3) | 0/72 (0) | 0.127 | – | + | 5/72 (6.9) | 0 |
12 | 71 | 0/60 (0) | 0/67 (0) | 0.132 | – | + | 6/67 (9.0) | 0 |
13 | 32 | 0/26 (0) | 0/31 (0) | 0.146 | – | – | 0/31 (0) | 0 |
14 | 31 | 0/30 (0) | 0/27 (0) | 0.216 | + | – | 0/27 (0) | 0 |
15 | 48 | 0/44 (0) | 0/44 (0) | 0.148 | – | + | 2/44 (4.6) | 0 |
16 | 77 | 0/76 (0) | 0/68 (0) | 0.148 | – | + | 6/68 (8.8) | 0 |
17 | 40 | 0/36 (0) | 0/32 (0) | 0.152 | + | + | 1/32 (3.1) | 0 |
Total | 72.2a | 9/960 (0.9) | 35/1028 (3.4) | 0.168a | 4 CS+ / 13 CS- | 12 CS+ / 5 CS- | 61/1028 (5.9) | 3/61 (4.9) |