Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on diff...

The koala retrovirus (KoRV) is a gammaretrovirus closely related to the gibbon ape leukemia virus and induces leukemias and immune deficiencies associated with opportunistic infections, such as chlamydiosis. Here we characterize a KoRV newly isolated from an animal in a German zoo and show infection of human and rat cell lines in vitro and of rats in vivo, using immunological and PCR methods fo...

avian influenza is an important disease of poultry with the potential to cause major epidemics resulting in significant economic losses. the presence of avian influenza viruses (aiv) in chickens in iran has not been previously reported. an avian influenza outbreak in broiler, layer and breeder farms occurred during a very hot summer in july 1998. three aiv isolates designated as 101, 102 and 10...

This report reviews the infectious diseases (bacterial, protozoal and viral) of cattle which are transmissible by mating or insemination, with reference to pathological consequences, diagnosis and effective prophylactic measures. While brucellosis, campylobacteriosis and trichomoniasis are generally under good control (although sporadic outbreaks may still occur), each disease has its diagnosti...

background: avian influenza (ai) viruses have been isolated from a wide diversity of free-living avian species representing several orders. since 1998, h9n2 ai outbreaks have been one of the major problems in iranian poultry industry. in 2006, h5n1 was reported in swans in the north of iran first , but until now there has been no official report from commercial flocks in iran. objectives: the a...