Keywords : Chicken

Molecular fingerprinting of methicillin resistant Staphylococcus aureus strains isolated from human and poultry in Duhok, Iraq

Hishiyar A Hado; Mahde S Assafi

Iraqi Journal of Veterinary Sciences, In Press
DOI: 10.33899/ijvs.2020.126375.1310

Methicillin-resistant Staphylococcus aureus (MRSA) has been recently identified in poultry and farm workers. The aim of this work was to investigate the epidemiological relatedness of MRSA among chickens and farmworker. MRSA isolates (n=50) from human (n=14) and from chikens (n=36) were tested for molecular epidemiological relatedness between human and poultry. RAPD-PCR was carried out for fingerprinting of MRSA isolates genome. Seven genotypes group (A-G) have been identified. All human MRSA were belonging to genotype A. Whereas, chickens MRSA isolates was belonging to different genotype patterns groups (A-G). To conclude, human MRSA was belonging to one genotype pattern but the chickens MRSA strains were belonging to seven genotypes. The genotype pattern A was the most dominant among all MRSA isolates. It is possible that the chickens play an important role for the human exposure to MRSA by direct contact. Further studies are required to address the relatedness between human and chicken MRSA.

Experimental histopathological study of chicks infected with Cryptosporidium baileyi isolated from wild pigeons in Mosul

Saevan Saad Al-Mahmood

Iraqi Journal of Veterinary Sciences, 2011, Volume 25, Issue 1, Pages 43-49
DOI: 10.33899/ijvs.2011.5704

The aim of this study was to investigate naturally occurring cryptosporidiosis in pigeons in Mosul city as well as the pathology of experimental C. baileyi infection in chicks. Prevalence of the naturally occurring cryptosporidiosis in the pigeons was 30% according to morphological features of the isolated oocysts and distribution of the lesions of the experimental infection in chicks, the cryptosporidium was diagnosed as C. baileyi. Using a dose of 1000 oocysts, the infection was induced in chikens. Oocysts shedding was noted in the infected chickens at the 7th post – infection (p.i.) day and increased till the 15th p.i. day. Infected chicks showed dullness and anorexia. Microscopically p.i. day 7, there were necrosis of the tips of some of the intestinal villi, mucinous degeneration of the intestinal mucosa, and the presence of large numbers of the parasite in the tips of the intestinal villi. On p.i. day 10, necrosis of the tips of the villi was more extensive and the necrotic cells were sloughed into the lumen and accumulated as debris. Inflammatory mononuclear cells were seen infiltrating the various layers of the intestine. Similar but more extensive lesions were seen on p.i. day 15.