| seroepidemiological study on dictyocaulus viviparus infections in first year grazing cattle in northern germany. | in lower saxony, 103 of 258 (39.9%) first year grazing cattle herds were found to be serologically positive for antibodies against dictyocaulus viviparus. risk of infection was higher for cattle herds with an early turnout and a long grazing period, i.e. more than 150 days. herds that were observed by the farmers at least once a day were less frequently seropositive than other herds. the early observation of clinical signs enables farmers to treat the animals in time and to prevent the spread of ... | 1993 | 8333134 |
| A survey on Dictyocaulus viviparus antibodies in bulk milk of dairy herds in Northern Germany. | Parasitic bronchitis caused by the bovine lungworm, Dictyocaulus viviparus, occurs worldwide in temperate areas. The parasite is found predominantly in calves and heifers, but dairy cattle can suffer from lungworms when they become infected for the first time or if they have lost immunity due to lack of exposure to lungworm larvae during the grazing season. The present study was performed to determine the D. viviparus bulk milk antibody prevalence in dairy herds in the East Frisian region of nor ... | 2012 | 21917343 |