To determine the epidemiology of outbreaks of avian influenza A virus (subtypes H5N1, H9N2) in chickens in Bangladesh, we conducted surveys and examined virus isolates. The outbreak began in backyard chickens. Probable sources of infection included egg trays and vehicles from local live bird markets and larger live bird markets.

Newcastle disease (ND) is a major threat to poultry industry production throughout developing countries. The Newcastle disease viruses (NDVs) infecting industrialized and indigenous poultry in Iran are velogenic strains and responsible for the frequent outbreaks of ND in poultry farms even in vaccinated flocks causing serious economic losses in the commercial and indigenous poultry. However, va...

The study was aimed at evaluation of the applicability of selected microsatellite markers in examining genetic diversity in five Polish local chicken varieties (two groups of native crested chickens, crestless native chickens from Subcarpathian region and two groups of native miniature chickens) and reveal their genetic relationships to five purebreds (Leghorn, Rhode Island Red, Sussex, Greenle...

Response of Nigerian indigenous (local) and broiler chickens to experimental Eimeria infections was investigated by measures of clinical signs, packed cell volume (PCV), body weights (BW), feed consumption, faecal oocyst counts (oocyst per gram), and microscopic intestinal lesions. Three-week-old chickens of each breed received single pulse infections with 2500, 5000, and 100.000 sporulated Eim...

s of papers 41 tumor development, NO production by LPS activated AEC from RSVinjected AR and AP chickens was higher than NO production by LPS activated AEC from age-matched, vehicle-injected AP and AR controls. Macrophages isolated from regressing tumors had higher NO production and exhibited greater cytotoxicity than macrophages isolated from progressing tumors. Based on these data, the inabil...

A study of Newcastle disease (NCD) seroprevalence rates in local scavenging chickens in central Ethiopia was conducted on 180 chickens raised under a traditional management system in three selected agricultural-climatic zones. The study revealed the occurrence of high rates of NCD virus antibodies in local chickens in all three agricultural-climatic zones. Hemagglutination inhibition test was u...

By directional training, young domestic chickens have been shown to use a magnetic compass; the same method has now been used to analyse the functional characteristics and the physical principles underlying the chickens' magnetic compass. Tests in magnetic fields with different intensities revealed a functional window around the intensity of the local geomagnetic field, with this window extendi...

BACKGROUND Crossed beaks have been reported to occur in Appenzeller Barthuhn, a local Swiss chicken breed. The assumed causes for this beak deformity which are also seen in other bird species including domestic chickens, range from environmental influences to genetic factors. The aim of this project was to characterize the prevalence, the phenotype, and the underlying genetics of crossed beaks ...

The importance of testing the use natural adaptogenic preparations in local poultry farming breeding broiler chickens is aimed at maximizing productive potential work and increasing survival rate chickens. From first day to age seven weeks, effects succinic citric acid on growth live weight, waste were experimentally tested four groups. results confirmed positive effect these drugs important ec...