Investigations of Avian Leukosis Virus Subgroup J and Reticuloendotheliosis Virus Infections in Broiler Breeders in China
نویسنده
چکیده
Avian leukosis virus subgroup J (ALV-J) and reticuloendotheliosis virus (REV) were detected in Arbor Acres (AA) parent broiler breeders between September 2008 and December 2009 in China. Samples from blood (n=1331) and sick chickens (n=152) were obtained from 19 flocks in China for serology, histopathology and PCR analysis. Serologic analysis revealed that the anti-ALV-J, -REV or -ALV-J and REV antibody responses were 10.2%, 42.6% and 6%, respectively. Fifty-seven chickens showed signs of neoplasia based on gross and microscopic examination. The type of tumors included myelocytomas, hemangiomas, lymphosarcomas and fibrosarcoma. Seropositivity of tumor bearing chickens for ALV-J, REV or ALV-J and REV was 19.3%, 42.1% and 3.5%, respectively. PCR results showed that the positive rate was 43.9%, 14% and 5.3% for ALV-J, REV or ALV-J and REV respectively, in 57 tumor bearing chickens. The data presented in this report demonstrate that ALV-J or REV infections (or co-infections) rates in AA flocks are relative high in China.
منابع مشابه
Detection of avian leukosis virus subgroup J in albumen of commercial and native fowl eggs using RT-PCR in Fars province of Iran
The subgroup J of ALV (ALV-J) has emerged as an important pathogen of meat-type chickens since1989. This virus is responsible for economic losses due to both mortality and depressed performance inchickens. So, the objective of this study is the detection of ALV-J in the albumen of commercial and nativefowl eggs using RT-PCR. Three hundred and seventy egg albumens were randomly selected from dif...
متن کاملSerologic profile of avian leukosis virus subgroup-J, Mycoplasma gallisepticum and Mycoplasma synoviae in broiler grandparent flocks of Iran.
Avian Leukosis Virus Subgroup-J (ALV-J). Mycoplasma gallisepticum (MG) and MycopJasma synviae (MS) are important pathogens in chickens that cause severe economical losses in poultry industry throughout the world. Seven broiler grandparent flocks of Iran (six broiler strains) were sampled randomly at the ages of 8-63 wk (100 samples from each flock) for antibody detection to ALV-J, MG, and MS ...
متن کاملInvestigations on the Presence of Antibodies to Avian Leukosis Virus Subgroup-J (ALV-J) in Broiler Breeders and Broilers
The aim of this study was to investigate the presence of antibodies to ALV-J in broilers and broiler breeders. For this, 5 broiler units and 1 broiler breeding unit in the Marmara region were visited. Seventy 4-6 -week-old chicks from the broiler units, consisting of 14 chicks from each broiler unit, were selected. Seventeen chickens from the broiler breeding unit were also selected. The chicks...
متن کاملMetastatic cutaneous neuro- myofibroblastic sarcoma induced by avian leukosis virus subgroup J in a rooster (Gallus gallus domesticus)
An adult native cock (Gallus gallus domesticus) referred to the aviary clinic with multiple different sizes of round dermal nodules. The bird died few days later, and was then submitted for further evaluation. Macroscopic and microscopic examinations as well as a PCR test were done to identify type and cause of the tumor. In histopathological assessment of biopsy specimen, it consisted of inter...
متن کامل