Sara Livesay – Epidemiologic survey of parasites in swine from the community of Merida on Ometepe Island, Nicaragua


  • To determine parasite species present in swine within the Merida community using the double sugar centrifugation technique. 
  • To quantify swine parasite loads using McMaster’s fecal counting technique. 
  • To examine the impact of parasites on the host by evaluating hematocrit, total protein and body condition score of the swine. 


The swine of Merida carry significant parasite infections that affect body condition score and productivity. If proper antihelminthic programs were implemented these parameters would change to benefit the overall health and performance of the swine. 

Experimental procedures

This study will involve collection of at least 50 fecal samples from available swine owned by Merida farmers both brought to the clinic and on farm calls.  Parasite ova will be examined in samples via light microscopy using the double sugar centrifugation flotation technique4 for slide preparation and quantified by a modified McMaster’s technique.  Blood samples will be collected into EDTA tubes and used to determine packed cell volume and total protein for each animal in the study.  Body condition scores will be also be reported as to assess overall health of the swine. In addition to animal samples, a survey will be conducted to determine current swine management practices and antihelminthic protocols. 

SL Goat     pigs