Results of eelworm experimental infection in pig and clinical features in infected pigs

Abstract

We carried out the experimental infection with strongyloidiasis for 15 one month old healthy pigs
by dividing in three experimental batches (batch 1: strongyloides ransomi infected via pigs’ skin, batch
2: via oral and batch 3: control without infection), simuteanously observing clinical signs of 1,265 pigs
infected naturally with strongyloides in each day in order to determine the time to complete the life cycle
of Strongyloides ransomi and clinical characteristics of the infected pigs. The infection pathogens were
reared as follows: Strongyloides ransomi eggs were collected from the feces and gastrointestinal contents
of the infected pigs with very high intensity, these samples were placed in the plastic pots separately
according to the sample type, raised at room temperature for larvae development, then they were collected
by the Baermann method. The pigs were infected experimentally by 2 routes: oral and transdermal, with
a dose of 10,000 larvae/pig. As a result, with the pigs infected via oral time for Strongyloides ransomi
completing the life cycle was 6-8 days, while the period for Strongyloides ransomi completing its life cycle
via transdermal infection required about 8-11 days. The clinical symptoms of pigs infected orally and
trasndermally with strongyloides ransomi, and naturally infected pigs were similar, such as: fever, cough,
poor appetite, thin animals, dry skin, ruffled fur, and mucous membranes. paleness and diarrhea.