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Browsing by Author "Alkan, Feray"

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    Article
    An Assessment of Bovine Herpes Virus 4 as a Causative Agent N Abortions and Neonatal Death
    (Aosis, 2020) Dagalp, Seval B.; Babaoglu, Ali R.; Dogan, Firat; Farzani, Touraj A.; Alkan, Feray
    Numerous viruses, including bovine viral diarrhoea virus (BVDV), bovine herpes virus 1 (BoHV-1) and bovine herpes virus 4 (BoHV-4), and other pathogens are the most common causes of reproductive disorders and are responsible for huge economic losses in livestock production. This study investigates the aetiological role of BoHV-4 in fertility problems such as abortions, stillbirth and birth with unviable calves. Retrospective samples from 38 animals, including 17 aborting cows, 17 aborted foetuses, three stillborn calves and one unviable newborn calf were analysed. The BoHV-4 genome was detected in 25 (65.7%) animals by polymerase chain reaction. In 14 of these infected animals, we detected co-infection with BVDV, while the co-presence of BoHV-1 was also detected in one animal. In addition to the high prevalence of BoHV-4 genome in materials related to fertility problems, isolation of Bo H V-4 from the brain of one stillborn calf indicated a causal link between BoHV-4 and fertility problems, such as abortion, stillbirths or birth with unviable calves.
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    Article
    Characterisation of Env and Gag Gene Fragments of Bovine Leukemia Viruses (Blvs) From Cattle in Turkey
    (Springer Wien, 2011) Alkan, Feray; Oguzoglu, Tuba Cigdem; Timurkan, Mehmet Ozkan; Karapinar, Zeynep
    The aim of this work was to investigate the molecular characteristics of bovine leukemia viruses (BLVs) in Turkey. The variability of env and gag fragments of BLVs was examined using DNA from blood samples obtained for sequence analysis of BLVs in four cattle herds from three different geographical areas in Turkey. The env gene sequences were highly similar to those of Brasilian, Argentine, and Japanese BLV strains, while gag genes from Turkish BLV isolates showed greatest similarity to those of Iranian isolates. This paper is the first report on the partial characterisation of env and gag genetic fragments of BLVs from Turkey.