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    Bovine Leukemia Virus Antibodies in Dairy Cattle Farms and Milk Cooling Tanks
    (UNIV FED RIO GRANDE DO SUL, 2014) Kale, Mehmet; Hasircioglu, Sibel; Yavru, Sibel; Yapici, Orhan; Gur, Sibel; Avci, Oguzhan; Sunar, Omer
    Background: Bovine leukemia virus (BLV) is a retrovirus. It is common infectious viruses of cattle with worldwide distribution. Milk from infected cows often contains BLV-infected cells are a common cause of infection. Eradication and control of BLV is based on early diagnostic. Both serum and milk samples can be tested by ELISA and it is possible to test either individual samples or, at a herd level, milk cooling tanks (MCT) samples. The aim of this study is to determine BLV antibodies (Abs) in the MCT, milk cans, and individual blood and milk samples of dairy cows in dairy cattle managements located in Burdur center and its districts and to follow and study the infection on the milk production chain. Materials, Methods & Results: Milk samples were collected from 50 main MCT. Studies were carried out in the managements that seven BLV Ab (+) and seven Ab (-) in their main MCT were located. For this purpose, milk samples were collected from mixed milk cans that were collected from managements providing milk for main MCT. Blood and milk samples were collected from dairy cows, housed in managements where BLV Ab (+) and Ab (-) was detected. Highest and lowest percent BLV (+) management, percent BLV (+) can numbers and percent milk amount were in 1 ton and 2 ton MCT, respectively. Moreover, these parameters were paralleled in all MCT. Percent BLV (+) and milk amounts were highest in 3 ton MCT and lowest in 2 ton MCT. In addition, these parameters were paralleled in all MCT. Distributions in BLV (+) managements ranged from 15 to 75%. It was detected at the individual animal levels, BLV (+) milk sample distributions ranged between 7.4 and 38.4%. Age range of the BLV (+) cows was between 3 and 11 years. Individual BLV tests between milk and serum samples were correlated positively in 5 managements (71.4%). On the other hand, the correlation was not detected in 2 of the managements (28.6%) that the individual milk and serum samples were collected. BLV (+) managements (%), BLV (+) cans (%) and milk volumes (%) were highest in 1 ton MCT and lowest in 3 ton MCT as BLV Ab (-). In addition, these 3 parameters were correlated in all MCT. BLV (+) cow numbers (%) and milk yields of the cows (%) were also correlated in all MCT. Although the MCT were found to be BLV (-), 3.9-37.5 % of the managements that provided milk to BLV (-) MCT were BLV (+). Furthermore, only 7.2-9.2 % of individual milk tests for the cows in managements that provided milk into BLV (+) MCT was BLV (+). Age of the BLV (+) animals was ranged between 3 and 11 in all MCT. The individual BLV tests between milk and serum samples were correlated positively in two managements (28.6 %). On the other hand, the correlation was not detected in 5 of the managements (71.4 %) that the individual milk and serum samples were collected. Discussion: The current study concluded that sampling milk cans is more appropriate than sampling MCT for BLV program. There was a correlation among the number of BLV (+) managements providing milk to milk tanks, number of cans and amount of milk in the cans. Furthermore, there was a correlation between the number of BLV (+) animals and milk volume of BLV (+) animals. Stage of a lactation period could be important for BLV screening since this appeared to affect the BLV test outcomes. There were also no effects of BLV infection on the milk yield and were no correlations between the individual blood and milk sample tests from the same animals. Moreover, blood samples of the cows with Ab (-) milk samples should be tested individually for BLV infection.
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    Bovine Viral Diarrhea Virus (BVDV) Infection in Relation to Fertility in Heifers
    (JAPAN SOC VET SCI, 2011) Kale, Mehmet; Yavru, Sibel; Ata, Ayhan; Kocamuftuoglu, Mesih; Yapici, Orhan; Hasircioglu, Sibel
    In this study, blood scrum and leukocyte samples were collected from 400 Holstein heifers, all of which appeared to be healthy. Antibodies (Ab) against bovine viral diarrhea virus (BVDV) were detected in 57 serum samples, and BVDV antigen (Ag) was detected in 38 leukocyte samples. There were statistically important differences between the average first insemination ages (FIT) of the BVDV (Ag-/Ab+) heifers (p<0.0001) (pregnant p<0.05, nonpregnant p<0.0001) and BVDV (Ag-/Ab-) heifers. The average conception rates (CR) of BVDV (Ag-/Ab+) heifers and BVDV (Ag-/Ab-) heifers were not significant statistically. There were statistically important differences in average FIT between persistent infected (PI) BVDV (Ag+/Ab-) heifers (p<0.0001; PI pregnant p<0.05, PI nonpregnant p<0.0001) and BVDV (Ag-/Ab-) heifers. No significant differences in average CR between PI BVDV (Ag+/Ab-) heifers and BVDV (Ag-/Ab-) heifers were found. The differences in average FIT between BVDV (Ag+/Ab+; p<0.0001; nonpregnant p<0.0001) and BVDV (Ag-/Ab-) heifers were important statistically. Although there were no BVDV (Ag+/Ab+) pregnant heifers, the differences in average CR between BVDV (Ag+/Ab+) pregnant heifers and BVDV (Ag-/Ab-) heifers were found to be statistically important (p<0.0001). We conclude that fertility is affected in heifers with BVDV (Ag-/Ab+, Ag+/Ab- and Ag+/Ab+).
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    Canine coronavirus infection in dogs in Turkey: Virological and serological evidence
    (AGRICULTURAL RESEARCH COMMUNICATION CENTRE, 2016) Avci, Oguzhan; Bulut, Oya; Yapici, Orhan; Hasircioglu, Sibel; Simsek, Atilla
    In the present study, virological and serological investigations were performed to determine the presence and prevalence of Canine corona virus (CCoV) infection in dog population in Turkey. Sera samples were analyzed for specific antibodies against CCoV by indirect enzyme linked immunosorbent assay (i-ELISA) while leukocyte samples were inoculated onto monolayers of Madin Darby Canine Kidney permanent cell culture. The cells were examined for viral antigen by direct immunofluorescence (IF) test after third passage. CCoV seropositivity was found in 46 (24.46%) of 188 dogs by indirect ELISA while only one leukocyte sample (0.53%) was detected as antigen positive by IF. Seropositive and antigen identification results were considered as indication of infection. From the results of this study it can be concluded that CCoV infection is widespread in the Turkish dog population and the virus may be attributed to be one of the important viral agents in dogs. In conclusion diagnosis of CCoV is difficult because it can easily be mixed with respiratory, enteric and generalized infections by other viral, bacterial and parasitic agents, but diagnosis and the vaccine application are essential for the control and prevention of CCoV infections.
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    Detection of central nervous system tissue as bovine spongiform encephalopathy specified risk material in traditional Turkish meat products
    (WILEY, 2012) Kale, Mehmet; Hasircioglu, Sibel; Ozturk, Cagdas; Kale, A. Selcen Akcan; Dogruer, Yusuf
    BACKGROUND: This study used enzyme-linked immunosorbent assay kits to investigate the presence of central nervous system (CNS) tissue in commercial raw and processed traditional Turkish meat products offered for consumption in various markets. RESULTS: Ninety-six raw traditional Turkish meat products (32 fresh raw beef patties, 32 cig kofta, 32 pastirma) and 64 processed traditional Turkish meat products (32 doner kebabs and 32 fresh processed beef patties) were analysed. CNS tissue was not found in pastirma, doner kebab, or fresh processed beef patty samples. The levels of CNS contamination in fresh raw beef patties were low (0.1% absorbance standard; 3.1%) and moderate (0.2% absorbance standard; 6.2%). The level of contamination in the cig kofta was low (0.1% absorbance standard; 18.8%). CONCLUSION: CNS tissue was present in all raw traditional Turkish meat products except for pastirma. (C) 2011 Society of Chemical Industry
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    Serologic Investigation for West Nile Virus Infection in Commercial Domestic Chickens (Gallus gallus domesticus)
    (MEDWELL ONLINE, 2012) Yapici, Orhan; Kale, Mehmet; Gur, Sibel; Mamak, Nuri; Yavru, Sibel; Hasircioglu, Sibel; Bulut, Oya
    In this study, West Nile Virus antibody presence (WNV) in white leghorn chickens located in various commercial domestic chicken establishments in Konya was studied serologically. Blood sampling from 380 white leghom chickens within the age range of 20-40 weeks was carried out. Blood serum samples were studied by West Nile Competition ELISA kit. All samples were found seronegative.