Xiao, L Periparturient rise in the excretion of Giardia sp. cysts and Cryptosporidium parvum oocysts as a source of infection for lambs. [electronic resource] - The Journal of parasitology Feb 1994 - 55-9 p. digital Publication Type: Journal Article ISSN: 0022-3395 Subjects--Topical Terms: Age FactorsAnimalsAnimals, NewbornCryptosporidiosis--parasitologyCryptosporidium parvum--isolation & purificationFeces--parasitologyFemaleGiardia--isolation & purificationGiardiasis--parasitologyPregnancyPregnancy Complications, Parasitic--parasitologySheepSheep Diseases--parasitology