Seasonal fluctuations of gastrointestinal nematodes of imported beef feeder calves in northeast Iowa.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D041981:Gastrointestinal Tract / Q000382:microbiology*; D007484:Iowa; D009348:Nematoda; D009349:Nematode Infections / Q000706:statistics & numerical data*; D010507:Periodicity; D012621:Seasons
CATTLE/diseases; GASTROINTESTINAL SYSTEM/microbiology; NEMATODE INFECTIONS/statistics; PERIODICITY