Duck Isolates Research Articles

Newcastle disease virus surveillance in Hong Kong on local and imported poultry

Surveillance of apparently healthy ducks, geese and fowl originating in Hong Kong and the People's Republic of China at a poultry dressing plant in Hong Kong yielded 67 isolates of Newcastle disease virus. More than twice as many viruses were isolated from the cloaca than from the trachea. Twelve representative isolates were examined in virulence tests--all six of the fowl isolates and two of five duck isolates behaved as velogenic strains, the other four were lentogenic.

Isolation, identification and characterization of <i>Salmonella</i> from duck

The present study was performed with the aim to isolate and identify Salmonella organism from diarrhoeic and apparently healthy ducks and to characterize duck Salmonella by biochemical test. Antibiotic sensitivity analysis of duck Salmonella was performed. A total of 65 cloacal samples were collected from ducks of three different regions such as Char Nilokkhiya, BAU Poultry Farm and Boyra, Mymensingh. Out of 65 samples 9 (13.07%) were found positive. The antibiotic sensitivity pattern showed that the duck isolates were highly sensitive to ciprofloxacin, kanamycin, nalidixic acid, co-trimoxazole and cephalexin but these isolates were highly resistant to chloramphenicol. Key words: Salmonella, duck, isolation, identification, characterization DOI = 10.3329/bjvm.v6i1.1331 Bangl. J. Vet. Med. (2008). 6 (1): 07-12

Characterization and Antibiogram of <i>Escherichia coli</i> Associated with Mortality in Broilers and Ducklings in Bangladesh

Mortality in broilers (6.56%) and growing ducks (11.0%) caused by Escherichia coli was recorded in the experimental flocks study during the period from May to August 2003. E. coli organisms isolated from broiler birds affected with characteristic lesions of omphalitis and yolk sac infection, fibrinous pericarditis and peri-hepatitis , hemorrhagic enteritis, and accumulation of excessive pericardial and peritoneal fluid, whereas from ducks with lesions of hemorrhagic enteritis and extensive epicardial hemorrhages. Each of the 21 isolates collected from broilers and 11 isolates from ducks was characterized by cultural and biochemical studies, of which 8 isolates from broilers and 5 isolates from ducks were tested for antibiotic sensitivity with 9 different antibiotics. The antibiotic sensitivity pattern showed that the isolates were highly sensitive to ciprofloxacin but an increasing trend of resistance was recorded in broilers (7 / 9) than duck (4 / 9) isolates. It may be concluded from the results of this study that the high rate of E. coli infection in broilers and ducks along with the high resistance of isolates to antibiotics constitute a threat to the poultry industry in Bangladesh. Key words: Escherichia coli infection; mortality; broilers; ducks; characterization; antibiogram doi: 10.3329/bjvm.v2i1.1927 Bangl. J. Vet. Med. (2004). 2 (1) : 09-14