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Öğe Effects of subclinical bovine leukemia virus infection on fertility of Holstein cows and heifers(2007) Yavru S.; Kale M.; Ata A.; Yapkic O.; Bulut O.; Gulay M.S.The purpose of this study was to determine the serological prevalence of bovine leukemia virus (BLV), and describe whether there are effects of BLV infection on the fertility of dairy cattle in Burdur, Turkey. The study population was 182 clinically healthy Holstein cows (>2-years-old) and 81 heifers (17- to 20-months-old) from a commercial dairy herd in Burdur. BLV prevalence was 66.48% (121/182) and 62.96% (51/81) in cows and heifers, respectively. There were no significant differences between BLV antibody-negative and antibody-positive cows for days open (DO; P = 0.2567) or between BLV antibody-negative and antibody-positive heifers for first service age (FSA; P = 0.65). Moreover, differences in conception rates (CR) between BLV antibody-negative and antibody-positive cows or heifers were insignificant (P > 0.1). In conclusion, even though the prevalence of BLV infection in Burdur region was found to be high, no effect of BLV infection was detected for fertility.Öğe The effects of vaccination on the immune responses of dairy cattle seropositive to bovine viral diarrhea virus (BVDV)(2013) Mamak N.; Hasircioglu S.; Gokce H.I.; Yavru S.; Kale M.; Yildiz R.; Avci O.The aim of the study was to determine the effects of vaccination on the antibody titres of daily cattle seronegative and seropositive to Bovine Viral Diarrhea Virus (BVDV). For this purpose, 23 cattle were used in the study. Before the vaccination, 23 cattle from two different dams (consisted of 15 and 8 in each) were tested for presence of BVDV specific antibodies and antigens. In the study, 16 (69.6%) and 2 (8.7%) animals were found to seropositive and persistently infected [antigen (+) but antibody (-)], respectively. Remaining 5 cattle (21.7%) were detected as seronegative. Sixteen seropositive and five seronegative cattle were vaccinated with an inactive commercial BVDV vaccine. In the study, serum and blood samples were collected before and after vaccination and analysed for the precence of BVDV specific antibodies and antigens using Enzyme Linked Immunosorbent Assay (ELISA). Serum Neutralization Test (SNT) was also used to detect BVDV neutralizing specific antibodies. Antibody titres in serum samples collected from vaccinated seropositive animals were significantly (p = 0.001, p<0.001) increased compare to those of samples collected before vaccination detected by ELISA. Finally, it was thought that vaccination of seropositive cattle for BVDV may result in long-lasting and strong immunity compared to those of seronegative animals which may benefical to protect cattle against BVDV infection. © Medwell Journals, 2013.Öğe First report on seroprevalence of bluetongue, border disease and peste des petits ruminants virus infections in sheep in kyrgyzstan(Agricultural Research Communication Centre, 2014) Yapici O.; Bulut O.; Avci O.; Kale M.; Tursumbetov M.; Yavru S.; Simsek A.In this study, the presence of antibodies against Bluetongue Virus (BTV), Border Disease Virus (BDV) and Peste des Petits Ruminants virus (PPRV), were evaluated for the first time in Kyrgyzstan. A total of 655 serum samples were collected from healthy sheep (Jaydara breed) from different regions of Kyrgyzstan (144 from Issik Gol region, 208 from Narin region, 189 from Talas region and 114 from Çuy region). Commercially available competitive ELISA kits were used to detect antibodies against tested samples. Seroprevalence was found to be 36.94%, 7.32% and 35.11% against BTV, BDV and PPRV infections, respectively. Significant differences in antibody prevalences were found among both BTV-BDV and BDV-PPRV groups (P< 0.001) only. This is the first report on seroprevalence of viral infections for BTV, BDV and PPRV in the Jaydara breed of sheep within Kyrgyzstan. © 2014, Agricultural Research Communication Centre. All rights reserved.Öğe A serological survey of bovine herpesvirus-1 infection in beef herds in Turkey(2007) Duman R.; Yavru S.; Bulut O.; Kale M.3001 beef serum samples collected from 25 herds selected from central and southern regions of Turkey for the presence of BHV-1 infections by serum neutralization test. The results revealed that 78.26% of the herds from central Turkey and all of the herds from southern Turkey had seropositive animals at titres of 1:4 and above. The prevalence of BHV1 infection was found as 35.08% in central Turkey and 38.75% in southern Turkey. In conclusion, this was a decrease in prevalence of BHV-1 infection in central and southern Turkey in beef population.Öğe Seroprevalence of viral upper respiratory infections in dairy cattle(KAFKAS UNIVERSITY, 2009) Duman R.; Yavru S.; Kale M.; Avci O.In this research, dairy cattle, located in Konya in Central Anatolian Region and its surrounding and had respiratory system symptoms, were investigated for the seroprevalence Infectious Bovine Rhinotracheitis (IBR), Bovine Viral Diarrhea Virus (BVDV), Bovine Respiratory Syncytial Virus (BRSV), Parainfluenza Virus type 3 (PI-3) and Bovine Adenovirus type 3 (BAV-3). For that purpose, 5800 animals, one year old and over, and bred in the private farms, were investigated and the blood samples were collected from 278 animals with respiratory system disease symptoms and high body temperatures. These samples were tested for presence of antibodies against IBR, BVDV, BRSV, PI-3 virus and BAV-3 by ELISA that was bought commercially. The seroprevalences which were determined for 5 viruses in cattle -(IBR, BVDV, BRSV, PI-3 virus and BAV-3)- were 35.25%, 96.04%, 94.40%, 92.80% and 85.97%, respectively. On the other hand, 0.35% (1 animal) of the dairy cattle sampled did not have any antibodies against the viruses. The existence of antibodies against the viruses were as such; 1.43% of cattle (4 animals) had antibodies against only one virus, 2.87% of cattle (8 animals) had antibodies against two, 14.02% of cattle (39 animals) had antibodies against three, 49.64% of cattle (138 animals) had antibodies against four and 31.65% of cattle (88 animals) had antibodies against five viruses. It was determined that IBR, BVDV, BRSV, PI-3 and BAV-3 infections were widespread and seroprevalences were high.
