Abstract
Coccidiosis is of great economic importance in many farm animals. This study involved analysis of 280 faecal samples collected from 12 traditional goat farms from Nay Pyi Taw area, Myanmar. Faecal samples were examined by the flotation method and concentrated oocysts were identified on the basis of morphological characters. Of 280 faecal samples examined, 168 (60.0%) were positive for Eimeria oocysts. Three different Eimeria species were identified and their positive detection rates in the herd were: E. arloingi (25.4%), followed by E. hirci (20.7%) and E. christenseni (13.9%). Identifications were confirmed by 18S rDNA and COI sequences. 18S rDNA sequences showed 100% homology with, respectively, E. christenseni reported from Australia, E. arloingi reported from Australia and Iran, and E. hirci from Australia. COI sequences of E. christenseni, E. hirci, and E. arloingi, respectively, exhibited 98.9%, 98.4%, and 98.5% similarities with those reported from Australia. This is the first report of Eimeria infection in Myanmar goats.
Highlights
Coccidiosis of farm animals is caused by coccidial parasites of the genus Eimeria which develop in the small and the large intestines
Of the 16 Eimeria species identified in goats worldwide, E. arloingi, E. ninakohlyakimovae, E. christenseni, and E. caprina were considered to be the most pathogenic species [14, 18, 29, 35]
Three 18S sequences obtained from this study showed 100% homology with E. christenseni (KX845684) reported from Australia and grouped in the same clade
Summary
Coccidiosis of farm animals is caused by coccidial parasites of the genus Eimeria which develop in the small and the large intestines. Many Eimeria infections in goats are asymptomatic; some species have been associated with diarrhoea and stunted growth [6, 33]. Of the 16 Eimeria species identified in goats worldwide, E. arloingi, E. ninakohlyakimovae, E. christenseni, and E. caprina were considered to be the most pathogenic species [14, 18, 29, 35]. According to reports from Sri Lanka, Malaysia, China, and India, the most frequent species of Eimeria in goats in Asian countries are E. ninakohlyakimovae, E. christenseni, E. arloingi, E. parva, E. caprina, and E. alijevi [11, 14, 36, 42].
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