| prevalence and infection pattern of naturally acquired giardiasis and cryptosporidiosis in range beef calves and their dams. | the prevalence and infection pattern of naturally acquired giardiasis and cryptosporidiosis in 20 ranch raised beef calves and their dams from birth to weaning was determined. rectal fecal samples were collected from calves at 3 days of age and weekly thereafter; cows' fecal samples were collected at the time of calving, 1 week later and four times during the summer grazing period. blood samples were collected from the calves at 3 days of age to determine igg(1) concentrations. giardia lamblia c ... | 2003 | 12781473 |