Iranian Veterinary Journal

Iranian Veterinary Journal

Molecular and hematological investigation on Anaplasma marginale infection in Najdi and native goats in Ahvaz

Document Type : Research Paper

Authors
Hossein Hamidinejat 1
Ali Abbas Nikvand 2
maryam Abbas Zadeh 3
Seyedeh Missagh Jalali 2
Somayeh Bahrami 1
1 Professor, Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2 Associate Professor, Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
3 MscGraduated from Parasitology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
10.22055/ivj.2025.500817.2760
Abstract
    Anaplasma is one of the obligate intracellular microorganisms that infect erythrocyte of mammals, especially ruminants. Considering the important role of Anaplasma marginale (A. marginale) for anaplasmosis in cattle, several studies have shown infection with this pathogen in other livestock species, but there is no information about its infection status and pathogenicity in Najdi goats. Therefore, the present study aimed to investigate the molecular and hematological factors of A. marginale infection in Najdi and native goats in Ahvaz city. To do it, blood samples were collected from 150 apparently healthy (76 Najdi and 74 native) goats from 6 herds in suburb of Ahvaz city, and infection with A. marginale was investigated by hematological and PCR methods. In the blood smear microscopy examination anaplasma-like intra-erythrocyte inclusion bodies were diagnosed in 22.4% and 29.7% of Najdi and native goats, respectively. The whole blood PCR also revealed A. marginale infection in 27.6% and 32.4% of Najdi and native goats, respectively. There was no statistically significant difference between the values ​​of hematological indices in the infected and non-infected goats. Multispecies husbandry and grazing were observed in all studied goat herds. Considering the lack of significant difference in the hematological parameters in the infected and non-infected goats, it seems that infected goats are important as a reservoir for A. marginale. The infection with A. marginale in the studied goats may be affected by the simultaneous rearing of different livestock species.
Keywords
A. marginale
Najdi goat
Multispecies husbandry
PCR
Smear microscopy

Subjects

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