Antibiofilm activity of a lytic Salmonella phage on different Salmonella enterica serovars isolated from broiler farms.

Bacteriophages have been mainly used in treating infections caused by planktonic bacterial cells in the veterinary sector. However, their applications as antibiofilm agents have received little attention. Accordingly, a previously isolated Salmonella infecting Siphoviridae phage was investigated for host range against 15 Salmonella enterica isolates (S.

Bacteriological and molecular study of species associated with central nervous system manifestation in chicken flocks.

Background And Aim: species often cause systemic health problems in poultry flocks, sometimes including nervous systems manifestations. This impact of has rarely been studied. This study aimed to define an alternative pathogenic pathway for spp.

Detection of Novel Goose Parvovirus Disease Associated with Short Beak and Dwarfism Syndrome in Commercial Ducks.

Derzsy's disease causes disastrous losses in domestic waterfowl farms. A genetically variant strain of Muscovy duck parvovirus (MDPV) and goose parvovirus (GPV) was named novel goose parvovirus (NGPV), which causes characteristic syndrome in young ducklings. The syndrome was clinically characterized by deformity in beaks and retarded growth, called short beaks and dwarfism syndrome (SBDS).

Efficacy of Live Attenuated Vaccine and Commercially Available Lectin Against Avian Pathogenic Infection in Broiler Chickens.

In this study, the protective efficacy of an live attenuated vaccine was compared to the preventive administration of lectin preparation before the challenge. Two hundred broiler chicks were divided into eight equal groups. The first group was used as a negative control group.

The occurrence of the multidrug resistance (MDR) and the prevalence of virulence genes and QACs resistance genes in E. coli isolated from environmental and avian sources.

Colibacillosis is a major disease affecting poultry leads to high morbidity and mortality which causing tremendous economic losses worldwide. These economic disparities are amplified among low and middle-income where sanitation and hygiene are challenged by the increasing demand for quality sources of animal protein. With a view to investigating the prevalence of virulence genes and QACs resistance genes as well as monitoring the antibiogram of E.

The occurrence of disinfectant and antibiotic-resistant genes in isolated from chickens in Egypt.

Aim: This work aimed to determine the occurrence of antibiotic and disinfectant resistance genes in isolated from chickens in Egypt.

Materials And Methods: Organs (liver, lung, heart, yolk sac, and bone marrow) of 1500 chicken samples were collected from diseased chickens suffered from colibacillosis with PM findings as CRD, diarrhea and omphalitis from different governorates of Egypt as: Giza, EL-Bahira, Fayoum, El-Dakahlia, El-Ismalia, and El-Sharkia during 2015-2016. These samples were labeled and transported immediately on ice to the Reference laboratory for quality control on poultry production (RLQP).

Initiation and regulation of immune responses to immunization with whole inactivated vaccines prepared from two genetically and antigenically distinct lineages of Egyptian influenza A virus subtype H5N1.

Following the introduction of highly pathogenic avian influenza (HPAI) virus subtype H5N1, the Egyptian government implemented a massive poultry vaccination campaign as the cornerstone of its policies to control the virus. The efficacy of vaccination has been evaluated primarily by measuring titers of antibodies inhibiting the hemagglutinating activity of the viral hemagglutinin (HA). However, other aspects of the host response remain poorly understood.

Antibiotic resistance and polymorphism in the quinolone resistance-determining region of Campylobacter spp. isolated from 1-day-old ducklings.

Thirty-three isolates of Campylobacter coli and three isolates of Campylobacter jejuni were recovered from 150 1-day-old ducklings. All isolates were sensitive to chloramphenicol and amikacin, but resistant to sulfamethoxazole-trimethoprim (SXT) by the disc diffusion method. Most isolates were susceptible to tetracycline and erythromycin, but resistant to ofloxacin and ciprofloxacin.

Different counteracting host immune responses to clade 2.2.1.1 and 2.2.1.2 Egyptian H5N1 highly pathogenic avian influenza viruses in naïve and vaccinated chickens.

In Egypt, two distinct lineages of H5N1 highly pathogenic avian influenza (HPAI) viruses, "classic 2.2.1.

Epidemiology and molecular characterisation of duck hepatitis A virus from different duck breeds in Egypt.

Duck hepatitis virus (DHV) is an acute highly contagious disease of ducklings caused by three distinct serotypes of duck hepatitis A virus (DHAV), a member of the RNA family Picornaviridae, where serotype 1 is the most widespread serotype worldwide. To date, little if any is known about the prevalence and genetic characterisation of DHAV outside Asia. The current study describes surveillance on DHV in 46 commercial duck farms in Egypt with a history of high mortality in young ducklings from 3 to 15 day-old from 2012 to 2014.

Surveillance on A/H5N1 virus in domestic poultry and wild birds in Egypt.

Background: The endemic H5N1 high pathogenicity avian influenza virus (A/H5N1) in poultry in Egypt continues to cause heavy losses in poultry and poses a significant threat to human health.

Methods: Here we describe results of A/H5N1 surveillance in domestic poultry in 2009 and wild birds in 2009-2010. Tracheal and cloacal swabs were collected from domestic poultry from 22024 commercial farms, 1435 backyards and 944 live bird markets (LBMs) as well as from 1297 wild birds representing 28 different types of migratory birds.

Effect of cocirculation of highly pathogenic avian influenza H5N1 subtype with low pathogenic H9N2 subtype on the spread of infections.

Widespread prevalence of avian influenza H9N2 subtype in the Middle East region and its detection in Egypt in quail in early summer 2011 added another risk factor to the Egyptian poultry industry in addition to highly pathogenic H5N1 subtype. This situation increases the need for further surveillance and investigation of H9N2 viruses in commercial and household chickens. This work describes detection and genetic characterization of recently isolated H9N2 viruses from chicken flocks.

Complete genome characterization of avian influenza virus subtype H9N2 from a commercial quail flock in Egypt.

The suspected presence of avian influenza virus subtype H9N2 in poultry in Egypt is a major concern since this subtype is widely distributed in different countries in the Middle East, here we describe the full genetic characterization of an avian influenza A virus (Qa/Egypt/11; H9N2) of subtype H9N2 that was previously isolated from a clinically normal quail flock in Giza, Egypt in May 2011. The nucleotide sequence analysis of the hemagglutinin gene of the isolated Egyptian virus showed the highest similarity with one group of recent Israeli strains (97 %) circulating from 2006-2010. Sequence homology and phylogenetic analysis indicated that the Qa/Egypt/11 isolate belonged to the A/quail/Hong Kong/G1/1997-like lineage with new mutations identified in all viral proteins.