Determination and Diversity of Bovine Coccidia in Zabol, East of Iran

Document Type: Original Articles

Authors

1 Department of Pathobiology, School of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 Department of Pathobiology, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran.

3 Department of clinical science, Special centre of domesticated animal research, University of Zabol, Zabol, Iran.

4 Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran

Abstract

The present study was designed to investigate the prevalence of Eimeria spp. in Zabol, east of Iran. The samples were examined microscopically for the presence of oocysts from February 2015 to December 2016. Out of 196 cattle, 124 (63.26%) were identified to be positive for Eimeria species. Eight species of Eimeria were found as follows: E. bovis (42.54%), E. zuernii (38.67%), E. subspherica (5.52%), E. brasiliensis (4.97%), E. ellipsoidalis (4.41%), E. cylindrical (1.65%), E. pellita (1.65%), and E. wyomingensis (0.55%). Multiple infections with two or three species were identified in 56 (45.16%) and 2 (1.61%) cases, respectively. The infection rate was observed to be higher in calves (75%) as compared to adult cattle (59.02%). The prevalence of Eimeria was greater in female cattle (67.94%). The highest prevalence and mean number of oocysts were observed in winter (69%) and autumn (209.09), respectively. All the faecal samples had an oocysts per gram of feces (OPG) less than 1000. The prevalence of infection and mean OPG were directly correlated with rainfall and relative humidity and inversely correlated with temperature. Considering the high prevalence of bovine coccidiosis in Zabol, increasing awareness of farmers and veterinarians regarding the economic importance of bovine coccidiosis should be regarded as an important factor in preventing and controlling the infection.
Keywords: Prevalence, Cattle, Eimeria spp., Risk factors, Iran

Keywords

Main Subjects


Article Title [French]

La détermination et la diversité de coccidies bovines à Zabol dans l’Est iranien

Abstract [French]

L’objectif de cette étude était d’évaluer la prévalence des espèces d’Eimerias à Zabol dans l’Est iranien. Les échantillons ont été examinés au microscope de Février 2015 à Décembre 2016 afin de déterminer la présence d’oocystes. Sur 196 bovins, 124 (63,26%) étaient positifs pour les espèces d’Eimeria. Les huit espèces identifiées étaient les suivantes : E. bovis (42,54%), E. zuernii (38,67%), E. subspherica (5,52%), E. brasiliensis (4,97%), E. ellipsoidalis (4,41%), E. cylindrique (1,65%), E. pellita (1,65%) et E. wyomingensis (0,55%). Les taux d’infections multiples causées par deux ou trois espèces étaient respectivement de 56 (45,16%) et 2 (1,61%). La prévalence des infections était plus élevée chez les bovins (75,00%) que chez les adultes (59,02%). Les bovins femelles étaient les plus infectées et constituaient 67,94% des cas détectés. La prévalence la plus élevée et le nombre moyen d'oocystes ont été respectivement observés en hiver (69,00%) et en automne 209,098. Tous les échantillons fécaux avaient un OPG (oocystes par gramme de fèces) inférieur à 1000. La prévalence de l'infection et l'OPG moyen corrélaient directement aux taux de précipitations et d'humidité relative, alors qu’il montrait une corrélation inverse avec la température. Etant donnée la forte prévalence de la coccidiose bovine à Zabol, il faut considérer la sensibilisation des agriculteurs et des vétérinaires à l'importance économique de la coccidiose bovine comme un facteur important dans la prévention et le contrôle de l'infection.

Keywords [French]

  • Prévalence
  • Bovins
  • Eimeria spp
  • facteurs de risque
  • Iran

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