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    Antibodies to Bluetongue, Akabane and Schmallenberg viruses in native dromedary camels in Turkey
    (Univ Zagreb Vet Faculty, 2021) Pestil, Zuleyha; Dogan, Firat; Gurel, Kemal; Ataseven, Veysel S.
    Sera from 86 Turkish native camels from seven provinces in Turkey were collected and tested for specific antibodies to Bluetongue virus (BTV), Akabane virus (AKAV) and Schmallenberg virus (SBV) using ELISA. The BTV, AKAV and SBV antibodies were found in 53.5%, 51.2% and 15.1%, respectively. Furthermore, the seropositivity for multiple infection was the highest for dual infection with AKAV and BTV (25.6%), followed by triple seropositivity (9.3%). These findings indicated that BTV, AKAV and SBV circulate in camels in Turkey at a relatively high rate, and that an active surveillance program is needed for the management and tracing the dynamics of these infections in the Turkish camel population.
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    Equine and bovine papillomaviruses from Turkish brood horses: a molecular identification and immunohistochemical study
    (Univ Zagreb Vet Faculty, 2019) Kanat, Ozgur; Ataseven, Veysel S.; Babaeski, Serdar; Derelli, Fatih; Kumas, Cihan; Dogan, Firat; Dagalp, Seval Bilge
    Papillomaviruses have an oncogenic nature, developing benign or malignant tumours in association with the proliferation of cutaneous or mucosal epithelia in humans and animals. The objective of this study was to investigate, the genoprevalence of bovine papillomavirus (BPV) types 1 and -2. and equine papillomavirus (EcPV) types 1. 2 and 3 in Turkish brood horses, with or without genital lesions and skin tumours. and confirmation of the equine sarcoids by several immunohistochemical markers. A total of 42 genital swabs and 6 skin tumours were collected from Thoroughbred stallions/mares in Turkey. Overall, both EcPV and BPV specific DNA amplicons sampled were detected in genital swabs from 38.1% of the brood horses tested by PCR. The prevalence of BPV-1, BPV-2 and EcPV-2 in the Turkish brood horses was 14.3%, 2.4% and 21.4%, respectively. Furthermore, there was no significant difference between the horses that appeared to be healthy (38.7%) and symptomatic horses (36.4%) (P>0.05). Out of the six samples obtained from the six horses that had skin tumours, BPV-1 was detected in five tissue samples and four blood samples, and only one skin tumour was found to be infected with EcPV-2. This study indicates that a high prevalence of EcPV-2 and BPV-1 was found in apparently healthy horses as well as in symptomatic cases. Additionally, the horses infected subclinically with papillomaviruses may play a significant role in the epizootiology of papillomavirus infections and lead to an increase in reproductive problems in brood horse populations.
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    Estimation of production and reproductive performance losses in dairy cattle due to bovine herpesvirus 1 (BoHV-1) infection
    (Univ Zagreb Vet Faculty, 2016) Can, Mehmet F.; Ataseven, Veysel S.; Yalcin, Cengiz
    Infectious bovine rhinotracheitis caused by bovine herpesvirus 1 (BoHV-1), which negatively affects the production performance of infected cattle herds, results in considerable economic losses in dairy farms. The present study aimed to estimate farm-level production and reproductive performance losses in seropositive (SP) dairy cattle infected with BoHV-1. A total of 266 non-vaccinated cows were selected from 31 herds located in different parts of Hatay, Turkey. Data collected from SP and seronegative (SN) cows were compared with each other. Compared to the SN cows, 10% and 9% decreases were found regarding milk production (P<.01) and live weight (P<.01) in SP cows, respectively. Reproductive and mixed clinical problems in infected cows lead to the highest losses in respect of milk production and live weight, respectively. The financial loss due to the infection was estimated to be $US331 if abortion does not occur, and $US509 if abortion occurs as a result of the infection. Considering the likelihood of abortion, the average cost of infection was estimated to be $US379 per infected cow.
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    Prevalence of equine herpesvirus-1 and equine herpesvirus-4 infections in equidae species in Turkey as determined by ELISA and multiplex nested PCR
    (Elsevier Sci Ltd, 2009) Ataseven, Veysel S.; Bilge Dagalp, Seval; Guzel, Murat; Basaran, Zeynep; Tan, Mehmet T.; Geraghty, Bob
    In this report we examined the presence of specific antibodies against equine herpesvirus type 1 (EHV-1 and equine herpesvirus type 4 (EHV-4) in several equidae, including mules, donkeys, horses. The presence of EHV-1 and EHV-4 in respiratory diseases of equids, and ability of multiplex nested polymerase chain reaction (PCR) screening in simultaneous diagnosis of horses acutely infected by EHV-1 and EHV-4 were also investigated. Sera from 504 horses, mules and donkeys sampled were tested for the presence of EHV-1 and EHV-4 specific antibodies. Blood samples taken from 21 symptomatic horses and nasal swabs taken from 40 symptomatic horses were tested for the presence of EHV-1 and EHV-4 by a multiplex nested PCR. A total of 14.3% (3/21) of buffy coat samples and 32.5% (13/40) nasal swab samples were found to contain EHV-1 DNA, while 19% (4/21) buffy coat samples and 22.5% (9/40) nasal swab samples were found to be positive for EHV-4 DNA. By species, 14.5% of horses, 37.2% of mules and 24.2% of donkeys tested were EHV-1 seropositive. EHV-4 specific antibodies were detected in 237 (81.7%) of 290 horse sera tested. Results from this investigation demonstrate that EHV-1 and EHV-4 are prevalent throughout the equid population, and that donkeys and mules might also represent an important source of infection for other equids. We also showed that the multiplex nested PCR assay might be useful for diagnosis of mixed respiratory infections in horses due to EHV-1 and EHV-4. (C) 2008 Elsevier Ltd. All rights reserved.
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    Serum and milk levels of antibodies to bovine viral diarrhoea virus, bovine herpesvirus-1 and-4, and circulation of different bovine herpesvirus-4 genotypes in dairy cattle with clinical mastitis
    (Sciendo, 2023) Ataseven, Veysel S.; Ambarcioglu, Pinar; Dogan, Firat
    Introduction: Bovine viral diarrhoea virus (BVDV) and bovine herpesvirus (BoHV)-1 and -4 are important causes of respiratory diseases and reproductive disorders of dairy cattle worldwide.Material and Methods: Investigation of BVDV and BoHV-1 and -4 antibody levels in the serum and milk of dairy cattle in a group with clinical mastitis and a healthy group was undertaken using an indirect ELISA, and identification of the BoHV-4 genotypes in clinical mastitis cases was attempted by PCR and sequencing.Results: Antibodies specific to BVDV, BoHV-1 and BoHV-4 were detected in the serum and milk of all dairy cattle with clinical mastitis. The cut-off values for BVDV and BoHV-1 in the sera and milk were extremely high in both healthy and mastitic animals. However, BoHV-4 antibodies were detected only in the clinically mastitic cattle, and BoHV-4 levels were higher in milk than in sera among these animals. Genotypes I and II of BoHV-4 were detected in the milk samples of four seropositive cows with clinical mastitis from the same herd.Conclusion: The results of this investigation demonstrate that clinical mastitis cases in the same herd may have aetiology in different BoHV-4 genotypes.