Studies on prevalence and histomorphology of Sarcocystis species infecting cattle in Andhra Pradesh, India

Abstract

The present study was carried out to determine the prevalence of bovine sarcocystosis and identify the different species of cysts in cattle in different regions of Chittoor district, Andhra Pradesh. A total of 150 slaughtered cattle over a period of 1 year were examined both macroscopically and microscopically for the presence of infection. Out of 150 slaughtered cattle examined, macroscopic sarcocysts were observed in nine cattle and were exclusively found in oesophagus. Examination of tissue samples collected from different predilection sites from each of 150 cattle by pepsin-HCl digestion method revealed presence of live banana shaped bradyzoites under light microscopy in 134 cattle. Six cattle that were positive by macroscopic examination were also positive by microscopic examination of tissues. The overall prevalence of infection in cattle of Chittoor district was 91.33%. The prevalence of macroscopic and microscopic sarcocysts was 6.57 and 93.43% respectively. Statistically a significant relationship between the prevalence of infection among different age groups ( < 0.001) and no significant relationship ( > 0.001) between the prevalence of infection in male (91.76%) and female (90.76%) cattle was observed. In both male and females the prevalence of infection increased with age. Microscopically sections of tissues from cattle that were positive by tissue digestion technique revealed thin walled cysts (4.5 ± 0.5 µm) in 131 samples and thick walled cysts (0.5 ± 0.12 µm) in six cattle.

Parasitic affections of edible offales of slaughtered animals at El-Shohada abattoir, Monofia governorate, Egypt

“…Also, these results disagree with Abebe et al (2015) who recorded that 8.43% of 510 randomly selected slaughtered sheep and 8.5% of 420 randomly selected slaughtered goats were infected with C. ovis. The results of the current work revealed that the incidence of macroscopic Sarcocyst agree with Saeid et al (2015) who couldn't detect any macroscopic cysts in cattle and disagree with Mounika et al (2018) who observed macroscopic sarcocysts in nine cattle mainly in esophagus. The incidence in sheep disagrees with Aysen et al (2007) who found macrocysts of Sarcocyst ovifelis in (24.5%) of sheep mainly in esophagus.…”

Investigation of Sarcocystis spp. in slaughtered cattle and sheep by peptic digestion and histological examination in Sulaimani Province, Iraq

“…A prevalence of 100% was reported by Shekarforoush et al [29]. The prevalence rates of 95.5%, 91.33%, and 88.2% were reported by Mavi et al [30], Mounika et al [31], and Shahraki et al [32], respectively.…”

Sarcocistosis in cattle slaughtered in slaughterhouse with federal inspection in Santa Catarina

“…A dificuldade de diagnosticar e evidenciar lesões macroscópicas de cistos musculares na inspeção de carnes em abatedouros faz com que este músculo venha a ser comercializado, o que não ocorre, por exemplo, com lesões provocadas por cisticercos de Taenia saginata, que são facilmente visualizadas e diagnosticadas na musculatura, uma vez que ambos parasitos têm predileção por músculos com bom suprimento sanguíneo. As observações de macrocistos de Sarcocystis na musculatura (cardíaca ou diafragma) normalmente são causadas por S. hirsuta e S. hominis, porém S. cruzi é a espécie mais frequente na musculatura de bovinos, no Brasil e no mundo (Ghisleni et al, 2006;Mounika et al, 2018;Nourani et al, 2010;Nourollahi-Fard et al, 2015). Por serem intracelulares os sarcocistos de Sarcocystis estão protegidos das defesas imunes do hospedeiro, por esta razão na maioria dos casos não ocorre uma resposta inflamatória e o achado do protozoário em lâminas de músculo estriado é comum na rotina histopatológica (Tessele et al, 2013).…”