Some studies on blood parasites in camels (Camelus dromedarius) at shalatin city, red sea governorate

Mahran, O. M.

doi:10.21608/avmj.2004.178964

Cited by 13 publications

(2 citation statements)

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“…Although camels are hardy animals and can withstand the harsh conditions of dry areas due to their unique, adaptive physiology, their health can be adversely affected by a range of specific diseases (11,12), including those transmitted by bloodborne parasites. Such diseases can cause anemia, emaciation, and even death in severe cases when camels are infected (13). Camel anaplasmosis has been reported as a subclinical disease in dromedary camels of Tunisia, India, and Saudi Arabia (14).…”

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confidence: 99%

Molecular detection and characterization of Anaplasma marginale infecting cattle, buffalo, and camel populations in southern Egypt

2023

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Anaplasmosis is a severe tickborne disease of ruminants caused by Anaplasma marginale. A. marginale is distributed worldwide and attacks erythrocytes, resulting in an increased body temperature, anemia, jaundice, abortion, and, in some cases, death. Animals infected with this pathogen become lifelong carriers. In this study, we aimed to detect and characterize A. marginale isolated from cattle, buffalo, and camel populations using novel molecular techniques in southern Egypt. In total, 250 samples (from 100 cattle, 75 water buffaloes, and 75 camels) were analyzed by PCR for the presence of Anaplasmataceae, specifically A. marginale. The animals varied in breed, age, and gender, with most showing no signs of severe disease. By species, A. marginale was found in 61 out of 100 (61%) cattle, 9 out of 75 (12%) buffaloes, and only 5 out of 75 (6.66%) camels. All A. marginale-positive samples were examined for the heat-shock protein groEL gene and, additionally, for major surface protein 4 (msp4) and major surface protein 5 (msp5) genes to enhance specificity. Phylogenetic analysis of A. marginale targeted three genes (groEL, msp4, and msp5). This study provides the first report on using three genes for A. marginale detection in Camelus dromedarius in southern Egypt and generated new phylogenetic data for A. marginale infections in camels. A. marginale infection is endemic in different animal species in southern Egypt. Screening herds for A. marginale is recommended even when the signs of anaplasmosis are absent.

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Section: Introductionmentioning

confidence: 99%

Molecular detection and characterization of Anaplasma marginale infecting cattle, buffalo, and camel populations in southern Egypt

2023

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“…At the molecular level, three populations (Baladi, Maghrebi, and Sudani) were found to have a high degree of genetic purity with a lower degree of mixing, so they are considered pure populations [ 4 ]. These populations are used for different purposes [ 28 ], and about half of the Egyptian camels are present in the Shalateen area [ 20 ]. The Egyptian camels produce about 20.8, 2.3, 0.62, and 0.09 thousand tons of milk, meat, hides, and fibers, respectively [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Genetic similarity and diversity among three camel populations reared in Egypt

Abdel-Aziem

Mabrouk

EL-KADER

et al. 2022

Journal of Genetic Engineering and Biotechnology

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Background Molecular genetics has been extremely useful in determining the relation between animal populations and documenting the degrees of genetic variation found within them. The present study was undertaken to evaluate genetic diversity and the relationships between the three camel populations reared in Egypt: Maghrabi, Sudani, and Baladi using mitochondrial 16S sequences and other breeds of camels in the world. Methods Blood samples were collected from camels belonging to these three populations. Genomic DNA was extracted from the collected blood samples and subjected to PCR using specific primers for mitochondrial 16S region. The amplified products were purified using DNA purification kit to remove residual primers and dNTPs. Sequencing was performed in the Macrogen Incorporation. The amplified products were submitted to GenBank/NCBI under accession numbers OM 278349 and OM 278350 Results Sequencing was done on the partial mitochondrial 16S amplified fragments at 530 bp. This amplified area had two haplotypes. There was one substitution (G/A) at nucleotide 309 of the amplified segment. The nucleotide (π) and Hd stand for haplotype diversity, respectively, at 0.00008 and 0.042, and the average number of pairwise nucleotide differences, k, is 0.042, according to Fu’s Fs statistic and Tajima’s D, which is −1.10686. Genetic distance percentages between the three populations under study range from 0.000 to 0.0312. A phylogenetic analysis of Egyptian camel populations and other Camelus dromedarius populations revealed a strong relationship between them. Conclusions This study suggests that the 16S rRNA sequencing in mitochondria plays a critical role in genetic variation studies and analysis of phylogeny between camel populations and breeds.

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Prevalence and pathology of camel filariasis in Iran

2008

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A total of 1,070 camels of different ages and of both sexes slaughtered at Mashhad slaughterhouse were inspected for infection with Dipetalonema evansi. Microfilariae were found in peripheral blood smears of 221 (20.7%) camels (14% females and 23% males). In a second study, the testicles, epididymises, spermatic cords, and lungs of 197 male camels were examined, and 165 (83.7%) were infected with adult forms of D. evansi. Tissue sections from 30 infected and ten uninfected camels were collected and processed routinely for further histopathological studies. The arteries infected with D. evansi in the region of nodules in testis showed chronic reaction characterized by proliferative and hyperplastic changes of the endothelial and fibrous connective tissue layers, narrowing the lumen or occluding it. The testicles were either hypertrophic or atrophic and showed chronic orchitis with infiltration of lymphocytes, eosinophils, macrophages and fibroblasts, parenchymal degeneration, and necrosis and, in some cases, with hematoma and hydrocele formation. Necrosis of the alveolar walls, atelectasis, pulmonary edema, and fibrosis of the pulmonary parenchyma with chronic interstitial pneumonia and rarely mineralization of the wall of the blood vessels were also seen in some of the infected animals. D. evansi is highly endemic and constitutes an important health problem to camels in this area, resulting in high morbidity, impaired working capacity, and lowered productivity.

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Some studies on blood parasites in camels (Camelus dromedarius) at shalatin city, red sea governorate

Cited by 13 publications

References 0 publications

Molecular detection and characterization of Anaplasma marginale infecting cattle, buffalo, and camel populations in southern Egypt

Molecular detection and characterization of Anaplasma marginale infecting cattle, buffalo, and camel populations in southern Egypt

Genetic similarity and diversity among three camel populations reared in Egypt

Prevalence and pathology of camel filariasis in Iran

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