Effect of level of infection by gastrointestinal nematodes and anthelmintic treatment on milk yield in dairy sheepMaría Martínez-Valladares, Elías Martín-Ramos, Myriam Esteban-Ballesteros, Rafael Balaña-Fouce and Francisco Antonio Rojo-VázquezParasite, 28 (2021) 71DOI: https://doi.org/10.1051/parasite/2021068