molecular epidemiology of giardia and cryptosporidium infections in dairy calves originating from three sources in western australia.a longitudinal study was undertaken to determine the spread of naturally acquired giardia and cryptosporidium in dairy cattle in western australia. samples were collected weekly from birth to weaning, and only calves that were sampled four or more times were included in the analysis. it was found that calves rapidly acquire infections with cryptosporidium parvum and giardia, with cryptosporidium being the first to appear within 1-3 weeks after birth whereas giardia was most prevalent in calves 4 ...200415265565
cryptosporidium suis n. sp. (apicomplexa: cryptosporidiidae) in pigs (sus scrofa).molecular and biological characteristics of a new species of cryptosporidium from the feces of pigs (sus scrofa) is described. oocysts are structurally indistinguishable from those of cryptosporidium parvum; they are passed fully sporulated, lack sporocysts, and measure 4.9-4.4 microm (mean = 4.6 microm) x 4.0-4.3 microm (mean = 4.2 microm); length to width ratio 1.1 (n = 50). cryptosporidium suis is not transmissible to nude mice and is poorly infectious for cattle. molecular and phylogenetic a ...200415357067
prevalence of cryptosporidium genotypes in pre and post-weaned pigs in australia.a total of 289 pig faecal samples were collected from pre-weaned and post-weaned piglets and sows from 1 indoor and 3 outdoor piggeries located in the south-west region of western australia and screened at the 18s rrna locus for the presence of cryptosporidium. an overall prevalence of 22.1% (64/289) was identified. cryptosporidium was more prevalent in post-weaned animals (p<0.05); 32.7% (51/156) versus 10.6% (13/123) for pre-weaned animals. sequence analysis identified cryptosporidium suis in ...200818486131
longitudinal investigation of protozoan parasites in meat lamb farms in southern western this study, 96 faecal samples were collected from pregnant merino ewes, at two broad-acre, commercial sheep farms in southern western australia, on two separate occasions (16 and 2 weeks prior to lambing). following lambing, 111 (farm a) and 124 (farm b) female crossbred lambs (2-6 weeks old), were individually identified using ear tags (a numbered tag and a radio-frequency tag). a total of 1155 faecal samples were collected only from these individually identified lambs on five separate sampl ...201121733584
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