Trade-offs between nutrient intake and faecal avoidance in herbivore foraging decisions: the effect of animal parasitic status, level of feeding motivation and sward nitrogen content

alimentation behaviour comportamiento comportement contamination faeces feces feeding foraging grazing heces ingestion de substances nutritives nitrogen content nutrient intake nutrientes nutrients ovin ovinos pastoreo recherche de nourriture sheep strategies substance nutritive teladorsagia circumcincta teneur en azote