The spring-rise phenomenon: the relationship between the time of lambing and the commencement of the rise in faecal worm-egg counts.
D000818:Animals; D005243:Feces / Q000382:microbiology*; D005260:Female; D006374:Helminthiasis, Animal; D011247:Pregnancy; D012098:Reproduction; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*