Sarcocystis spp. in sheep and goats: frequency of infection and species identification by morphological, ultrastructural, and molecular tests in Bahia, Brazil

Parasitology Research
Marta Vasconcelos BittencourtLuis F P Gondim

Abstract

Sarcocystis spp. are cyst-forming coccidia that infect numerous animals species, including several livestock species. Despite the importance of sheep and goat production in Brazil, little it is known about the Sarcocystis species that infect small ruminants in the country and their potential impact on meat condemnation due to the presence of macroscopic cysts of the parasite. The aims of the present study were to determine the frequency of infection by Sarcocystis spp. in goats and sheep intended for human consumption in Bahia State, Brazil, as well as to identify the parasite species in selected samples. The entire tongue, esophagus, and heart were collected from 120 goats and 120 sheep. Tissues were examined for Sarcocystis spp. by macroscopic evaluation, light microscopy, electron microscopy, and molecular tests. Microscopic cysts of Sarcocystis spp. were detected in 95.8 % of sheep and 91.6 % of goats. Using either transmission electron microscopy or partial sequencing of the 18S region of the ribosomal DNA (rDNA) for species identification, Sarcocystis tenella and Sarcocystis arieticanis were observed in sheep and Sarcocystis capracanis in goats. Macroscopic cysts were not detected in the analyzed samples. We concluded tha...Continue Reading

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Citations

Oct 2, 2019·Acta Parasitologica·Camila Encarnação MinuzziFernanda Silveira Flores Vogel
Feb 2, 2018·Food Science & Nutrition·Reza Zolfaghari EmamehSeppo Parkkila
May 24, 2019·Animals : an Open Access Journal From MDPI·Dina M MetwallyManal F El-Khadragy
Apr 2, 2019·Veterinary Parasitology : Regional Studies and Reports·Camila E MinuzziFernanda S F Vogel

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