OBJECTIVES The purpose of this study was to characterize sets of extended-spectrum β-lactamases (ESBL)-producing Enterobacteriaceae collected longitudinally from different flocks of broiler breeders, meconium of 1-day-old broilers from theses breeder flocks, as well as from these broiler flocks before slaughter. METHODS Five sets of ESBL-producing Escherichia coli were studied by multi-locus ...

AIM Worldwide, Mycoplasma synoviae (MS) is an important pathogen of poultry, especially for chicken and turkey. It causes respiratory tract infection and infectious sinusitis. The study was conducted to determine the seroprevalence of MS infection with associated risk factors and identification of MS organism in unvaccinated flocks of commercial breeder farms of the Chittagong district, Banglad...

BACKGROUND From 2014 to 2015 in China, many broiler breeder and layer hen flocks exhibited a decrease in egg production and some chickens developed hepatitis syndrome including hepatomegaly, hepatic necrosis and hemorrhage. Avian hepatitis E virus (HEV) and avian leucosis virus subgroup J (ALV-J) both cause decreasing in egg production, hepatomegaly and hepatic hemorrhage in broiler breeder and...

Four flocks of Layer breeders, consist of 28000 (7000 birds each) at 25 weeks of age, hatchery and one day old chicks were subjected to swab sampling in order to isolate Staphylococcus aureus during the period from May till June 2008. Results revealed that more than half of the overall swab samples were positive (52.04%). Different isolation rates were recorded between four flocks, ranging from...

Commercial poultry operations involve four types of birds: broiler (meat producing) chickens, layer (table egg) chickens, turkeys, and ducks. Each type differs greatly in size and nutrient requirements. Breeder flocks for each of the species are a major part of the industry, and those flocks also have different nutrient requirements. Distinctly different diets are required for each species and ...

Eimeria necatrix-specific ELISA, using a recombinant antigen (the cDNA-clone NP19 expressing protein), was utilized to detect antibodies against E. necatrix in breeder pullet flocks that had previously received an attenuated live vaccine to E. necatrix. Vaccinated flocks were discriminated significantly from non-vaccinated flocks by their antibody titers and antibody positive rates at 30-55 day...

Italy has experienced recurrent incursions of H5N2 avian influenza (AI) viruses in different geographical areas and varying sectors of the domestic poultry industry. Considering outbreak heterogeneity rather than treating all outbreaks of low pathogenicity AI (LPAI) viruses equally is important given their interactions with the environment and potential to spread, evolve and increase pathogenic...

Campylobacter is the leading cause of bacteria-induced diarrheal disease, and the major vehicle for transmitting this microorganism to humans is poultry. Recent research has shown that Campylobacter can pass from the breeder hen to her progeny through the fertile egg, which is now considered to be a significant source of entry into the broiler flocks. Because of the importance of the organism i...

All Australian states currently (or will shortly in 2005), require commercial poultry to follow mandatory vaccination programs as described in a set of Standard Operating Procedures (SOPs) developed by the Newcastle Disease (ND) Management Group (NDMG) and endorsed by the respective state government authorities. Those states that previously adopted the SOPs in 2003 allowed a transition period f...