scholarly journals Occurrence of Chicken Infectious Anemia Virus in Industrial and Backyard Tunisian Broilers: Preliminary Results

Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 62
Author(s):  
Antonietta Di Francesco ◽  
Giulia Quaglia ◽  
Daniela Salvatore ◽  
Sonia Sakhria ◽  
Elena Catelli ◽  
...  
Keyword(s):  
Complete Genome ◽  
Immunosuppressive Agent ◽  
Epidemiological Investigation ◽  
Sequence Analyses ◽  
Chicken Infectious Anemia Virus ◽  
Chicken Infectious Anemia ◽  
Anemia Virus ◽  
High Degree ◽  
Backyard Chicken ◽  
Degree Of Similarity

Chicken infectious anemia virus (CIAV) is an economically important and widely distributed immunosuppressive agent in chickens. This study performed an epidemiological investigation on CIAV circulation in 195 Tunisian broilers, belonging to 13 lots from five industrial farms and in one rural farm. Fifteen animals were detected positive by a VP1 nested PCR. The amplicons were molecularly characterised by complete genome sequencing. All positive samples obtained in this study were from the rural farm, whereas the industrial farms sampled were negative. Nucleotide and amino acid sequence analyses showed a high degree of similarity among the sequences obtained, suggesting the circulation of a single CIAV strain in the positive lot. Phylogenetic analysis based on the CIAV VP1 nucleotide sequence and/or the complete genome showed that the sequences obtained in this study clustered with CIAV strains previously detected in Tunisia, Italy and Egypt, belonging to genogroup II. Our results highlight the need for constant CIAV surveillance in backyard chicken production.

scholarly journals Genetic Heterogeneity among Chicken Infectious Anemia Viruses Detected in Italian Fowl

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 944
Author(s):  
Giulia Quaglia ◽  
Giulia Mescolini ◽  
Elena Catelli ◽  
Giacomo Berto ◽  
Filippo Muccioli ◽  
...  
Keyword(s):  
Dna Amplification ◽  
Molecular Characteristics ◽  
Distribution Map ◽  
Present Survey ◽  
Broiler Breeder ◽  
Non Invasive ◽  
Chicken Infectious Anemia Virus ◽  
Chicken Infectious Anemia ◽  
Anemia Virus ◽  
Backyard Chicken

Chicken infectious anemia virus (CIAV) is a pathogen of chickens associated with immunosuppression and with a disease named chicken infectious anemia. The present survey reports an epidemiological study on CIAV distribution in Italian broiler, broiler breeder and backyard chicken flocks. Twenty-five strains were detected by a specifically developed nested PCR protocol, and molecularly characterized by partial VP1 gene or complete genome sequencing. Viral DNA amplification was successfully obtained from non-invasive samples such as feathers and environmental dust. Sequence and phylogenetic analysis showed the circulation of field or potentially vaccine-derived strains with heterogeneous sequences clustered into genogroups II, IIIa, and IIIb. Marker genome positions, reported to be correlated with CIAV virulence, were evaluated in field strains. In conclusion, this is the first survey focused on the molecular characteristics of Italian CIAVs, which have proved to be highly heterogeneous, implementing at the same time a distribution map of field viruses worldwide.

SEROLOGICAL STUDIES ON CHICKEN INFECTIOUS ANEMIA VIRUS IN GHARBEIA PROVINCE

2008 ◽  
Vol 6 (2) ◽  
pp. 196-208
Author(s):  
Moshira, A. El-abasy ◽  
Gamal, R. Hassab El-nabby ◽  
Ahmed, S. Hegasy ◽  
Salwa, M. Helmy
Keyword(s):  
Chicken Infectious Anemia Virus ◽  
Serological Studies ◽  
Chicken Infectious Anemia ◽  
Anemia Virus

scholarly journals Negative modulation of the chicken infectious anemia virus promoter by COUP-TF1 and an E box-like element at the transcription start site binding δEF1

2008 ◽  
Vol 89 (12) ◽  
pp. 2998-3003 ◽  
Author(s):  
Myrna M. Miller ◽  
Keith W. Jarosinski ◽  
Karel A. Schat
Keyword(s):  
Fluorescent Protein ◽  
Transcription Start ◽  
Upstream Promoter ◽  
Chicken Infectious Anemia Virus ◽  
E Box ◽  
Promoter Construct ◽  
Chicken Infectious Anemia ◽  
Lmh Cells ◽  
Green Fluorescent ◽  
Anemia Virus

Expression of enhanced green fluorescent protein (EGFP) under control of the promoter-enhancer of chicken infectious anemia virus (CAV) is increased in an oestrogen receptor-enhanced cell line when treated with oestrogen and the promoter-enhancer binds unidentified proteins that recognize a consensus oestrogen response element (ERE). Co-transfection assays with the CAV promoter and the nuclear receptor chicken ovalbumin upstream promoter transcription factor 1 (COUP-TF1) showed that expression of EGFP was decreased by 50 to 60 % in DF-1 and LMH cells. The CAV promoter that included sequences at and downstream of the transcription start point had less expression than a short promoter construct. Mutation of a putative E box at this site restored expression levels. Electromobility shift assays showed that the transcription regulator delta-EF1 (δEF1) binds to this E box region. These findings indicate that the CAV promoter activity can be affected directly or indirectly by COUP-TF1 and δEF1.

Chicken Infectious Anemia Virus Infection in Israeli Commercial Flocks: Virus Amplification, Clinical Signs, Performance, and Antibody Status

10.1637/7072 ◽  
2004 ◽  
Vol 48 (1) ◽  
pp. 108-118 ◽  
Author(s):  
I. Davidson ◽  
M. Kedem ◽  
H. Borochovitz ◽  
N. Kass ◽  
G. Ayali ◽  
...  
Keyword(s):  
Virus Infection ◽  
Clinical Signs ◽  
Chicken Infectious Anemia Virus ◽  
Chicken Infectious Anemia ◽  
Anemia Virus

Immune Complex Vaccines for Chicken Infectious Anemia Virus

2011 ◽  
Vol 6 (1) ◽  
pp. e21-e22
Author(s):  
Karel A Schat ◽  
Nelson Rodrigo da Silva Martins ◽  
Priscilla H O'Connell ◽  
Michael S Piepenbrink
Keyword(s):  
Immune Complex ◽  
Chicken Infectious Anemia Virus ◽  
Chicken Infectious Anemia ◽  
Anemia Virus

scholarly journals Synergetic pathogenicity of Newcastle disease vaccines LaSota strain and contaminated chicken infectious anemia virus

2019 ◽  
Vol 98 (5) ◽  
pp. 1985-1992 ◽  
Author(s):  
Qi Su ◽  
Tuanjie Wang ◽  
Fanfeng Meng ◽  
Zhizhong Cui ◽  
Shuang Chang ◽  
...  
Keyword(s):  
Newcastle Disease ◽  
Chicken Infectious Anemia Virus ◽  
Chicken Infectious Anemia ◽  
Anemia Virus

scholarly journals Complete Genome Sequences of Two Salmonella Viruses, VSe11 and VSe102 (Family Myoviridae, Subfamily Ounavirinae), with a Very High Degree of Similarity

2018 ◽  
Vol 6 (21) ◽  
Author(s):  
Nikolay V. Volozhantsev ◽  
Egor A. Denisenko ◽  
Angelina A. Kislichkina ◽  
Vera P. Myakinina ◽  
Valentina M. Krasilnikova ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Complete Genome ◽  
Genome Sequences ◽  
Coding Sequences ◽  
Content Type ◽  
Double Stranded Dna ◽  
Poultry Farms ◽  
High Degree ◽  
Degree Of Similarity ◽  
Very High

ABSTRACT Two lytic double-stranded DNA bacteriophages, VSe11 and VSe102, infecting broad-spectrum Salmonella enterica were isolated from the sewage of two different poultry farms. The phage genomes comprise 86,360 bp and 86,365 bp, respectively, with a G+C content of 39.0%, and both contain 129 putative coding sequences.

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