Estimation of uptake of digestive tract strongyle larvae from pasture, using oesophagus fistulated sheep.

Three Merino of Arles ewes fistulated at the oesophagus were used in autumn and spring in order to assess their larval uptake on infected irrigated pasture. The rate of transmission (ingested/available larvae of digestive tract strongyle) was low when the pasture was heavily infected; it was not otherwise modified by environmental factors.

[Relation between Muellerius capillaris infestation of molluscan intermediary hosts and of goats in Touraine]. / Relation entre l'infestation par Muellerius capillaris des mollusques hôtes intermédiaires et celle des caprins en Touraine.

32 dairy-goat farms of Touraine were investigated for Muellerius capillaris infection. Faecal and Molluscs samples were collected in Spring and Autumn. The factors of risk for goat were the abundance of Helix aspersa in Spring and of Deroceras reticulatum in Autumn. The infestivity of pasture was related to the infection of goat in Spring but not in Autumn. The faecal larval output in goats depended on the breed of goat at both periods; environmental factors were also of importance.