Person: ÇIRAK, VELİ YILGÖR
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ÇIRAK
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VELİ YILGÖR
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Publication A case of paramphistomosis and clinical evaluation in a cow with intensive breeding(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2023-01-01) Yavuz, Ahmet; ÖZÜİÇLİ, MEHMET; ÇIRAK, VELİ YILGÖR; YAVAŞ, ÖZKAN; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Patoloji Anabilim Dalı.; 0000-0001-7703-8937Paramphistomosis is an infection caused by parasites belonging to the family Paramphistomidae in domestic and wild ruminants. Due to the biology of the parasites, infection is more common in grazing animals. Infections with a subclinical course may cause production losses, while deaths may occur in severe clinical infections. This case report presents a cow reared under the intensive system and diagnosed with Paramphistomosis at necropsy to draw the attention of researchers, veterinarians and breeders to the subject. A total of 3756 Paramphistomidae parasites were collected, 2434 from the rumen and 1322 from the reticulum, in the postmortem necropsy of a six-year-old Holstein cow, which did not go out to pasture after the heifer period. Histopathological examinations revealed hyperkeratosis and acanthotic areas, as well as mononuclear cell infiltrations in the mucosa of both organs. The most important point of this case is that the animal, which lived most of its life in the "intensive system", was found to be infected by a "pasture-borne" parasitic infection (Paramphistomosis). In this context, contrary to the general belief that "there are no internal parasites in animals kept under intensive production conditions", it is thought that it would be beneficial to perform clinical and laboratory examinations for endoparasitic infections (especially helminthosis) at least once a year in accordance with the concept of "preventive medicine".Publication Infestation with fleas, ticks and lice in sheltered stray dogs in Turkey(Schluetersche Verlagsgesellschaft Mbh & Co Kg, 2020-01-01) Coşkunserçe, Gözde; Çırak, Veli Yılgör; ÇIRAK, VELİ YILGÖR; Aydın, Levent; AYDIN, LEVENT; Bursa Uludağ Üniversitesi/Veteriner Fakültesi.; 0000-0003-0570-2514Sheltering stray dogs is becoming a common practice by governmental veterinary administrations in Turkey in recent years, and veterinary surgeons have been facing various health issues of these animals including parasitic diseases. Three-hundred and fifty dogs from three municipal shelters in Bursa province were examined for flea, tick and louse infestations. The prevalence of infestation was evaluated relative to host age, gender, hair length and season. Of the examined dogs, 59.7% were found to be positive for ectoparasites. Seven species were identified including three species of fleas (Ctenocephalides canis, Ctenocephalides felis, Pulex irritans), three species of ticks (Rhipicephalus sanguineus, Rhipicephalus turanicus, Haemaphysalis erinacei) and one louse species (Trichodectes canis). Our study revealed the presence of H. erinacei in dogs for the first time in Turkey. The prevalence rates for fleas, ticks and T. canis were 51.1%, 12.0% and 4.9%, respectively. The most common parasite was C. canis (43.4%) followed by C. felis (27.4%) and R. sanguineus (9.7%). Neither gender nor hair length was determined as risk factors for prevalence of ectoparasite species, whereas dog's age (<1 year) was positively associated with the infestation rates of C. canis and T. canis. Season significantly affected the prevalence of R. sanguineus and flea infestations. In conclusion, this is the first study regarding the prevalence of canine ectoparasites in Bursa province, Turkey. Taking into consideration that canine ectoparasites frequently serve as natural vectors for important zoonoses veterinarians should attempt to reduce the infestation in dog populations.Publication Trichostrongylosis in cattle from south Marmara Region of Turkey: Assessment of various factors related to faecal egg counts(Kafkas Univ, Veteriner Fakultesi Dergisi, 2010-01-01) Tınar, Recep; ŞENLİK, BAYRAM; ÇIRAK, VELİ YILGÖR; AKYOL, ÇETİN VOLKAN; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parasitemoloji Anabilim Dalı.; 0000-0003-2964-2245; 0000-0003-0570-2514A cross-sectional study was carried out to determine faecal egg density in trichostrongyle infections in relation to animal age, animal breed, management system and farm type in cattle in South Marmara region of Turkey. Rectal faecal samples were collected from 513 cattle and coprological examination were conducted by a modified McMaster technique to determine faecal egg counts (FEC) per gram of faeces. Overall egg density was 81.4 +/- 6.8 EPG and it remained generally low. The mean faecal egg counts for adults was higher than those for the youngs. However, no statistically significant difference was found between the age groups for faecal egg counts. Although mean FEC were higher in Turkish Grey than in Holstein and Karacabey Bown, no statistically significant difference could be determined among the animal breeds. Management system was the factor that influenced number of trichostrongyle eggs and animals under semi-extensive system had more egg counts than those kept under intensive management system. Animals in the governmental farm have been found less affected with significant difference than their counterparts at small scale private farms.Publication Ectoparasites of hedgehogs (Erinaceus concolor) from Turkey(Schluetersche Verlagsgesellschaft Mbh & Co Kg, 2015-07-01) Girişgin, Ahmet Onur; Şenlik, Bayram; Aydın, Levent; Çırak, Veil Yılgör; GİRİŞGİN, AHMET ONUR; ŞENLİK, BAYRAM; AYDIN, LEVENT; ÇIRAK, VELİ YILGÖR; Uludağ Üniversitesi/Veteriner Fakültesi/Parasitoloji Bölümü; 0000-0002-0020-2708; 0000-0003-2964-2245; B-5286-2017; GBN-0139-2022; HLG-4450-2023; CKL-2130-2022Hedgehogs are small, nocturnal, spiny-coated animals that have been growing in popularity as exotic pets. However, these animals are host to a wide variety of viruses, bacteria, fungi and parasites, some of which are of zoonotic character. Thus, because hedgehogs have a potential role to transmit zoonoses including arthropod-borne diseases, we examined them for their ectoparasites. The study was carried out on hedgehogs found dead mainly due to road casualties in the Bursa province of Turkey. The ectoparasites were collected by both insecticide spraying of the body and inspection on a white paper carefully. Totally three species of ticks (Rhipicephalus sanguineus, Hyalomma aegyptium, Haemaphysalis parva) and one flea species (Archeopsylla erinacei) were detected. The prevalence of mixed infestation with both ticks and fleas was 45.5%. Haemaphysalis parva was reported for the first time from hedgehogs (Erinaceus concolor) in Turkey. The occurrence of ectoparasites and their potential role as vectors of certain zoonotic diseases are briefly discussed.Publication Comparison of helminth species and their prevalence in rudd ( scardinius erythrophthalmus l. 1758) in Golbasi dam lake and Kocadere stream in Bursa province of Turkey(Tubitak Scientific & Technological Research Council Turkey, 2008-01-01) Aydoğdu, Ali; AYDOĞDU, ALİ; Selver, Melih; Çırak, Veli Y.; ÇIRAK, VELİ YILGÖR; Bursa Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksekokulu.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parasitoloji Anabilim Dalı.; 0000-0003-2778-0273; JCO-3521-2023Variations in the helminth species parasitizing the rudd, Scardinius erythrophthalmus L., and their prevalences were compared in 2 different localities (Golbasi Dam Lake and Kocadere Stream) in Bursa province in northwestern Turkey. The overall prevalences of helminth infections were 46.7% and 92.3% at Golbasi Lake and Kocadere Stream, respectively. The following helminths were detected: Dactylogyrus difformis, Diplostomum spathaceum metacercariae, Asymphlodora markewitschi, Ligula intestinalis plerocercoids, Skrajibillanus scardinii, Eustrongylides sp. larvae, and Hysterothylacium sp. larvae. Among these species, D. difformis and D. spathaceum were recorded at both sampling stations. However, D. difformis was the dominant species in rudd in Golbasi Lake (overall prevalence 40%) while D. spathaceum was prevalent in Kocadere Stream ( overall prevalence 80.7%). L. intestinalis plerocercoids were present only in Golbasi Lake, while S. scardinii, A. markewitschi, Eustrongylides sp. larvae, and Hysterothylacium sp. were detected only in Kocadere Stream. It is concluded that within the same fish species the distribution of helminths and their prevalence vary substantially, especially for some parasites, between 2 different habitats ( lake and stream).Publication Prevalence of anoplocephalidae-infections according to fecal examination in sport horses(Ankara Üniversitesi, 2015-01-01) Gülegen, Ender; Girişgin, Ahmet Onur; Girişgin, Oya; Çırak, Veli Yılgör; Gülegen, Ender; GİRİŞGİN, AHMET ONUR; GİRİŞGİN, OYA; ÇIRAK, VELİ YILGÖR; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Sağlığı ve Hayvansal Üretim, Araştırma ve Uygulama Merkezi; Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı; Uludağ Üniversitesi/Karacabey Meslek Yüksek Okulu; 0000-0002-0020-2708; 0000-0001-9896-1093; JRY-1676-2023; B-5286-2017; JJV-7704-2023; JIT-4266-2023Aim of the present study was to determine the prevalance of Anoplocephalidae infections on enterprices where horses are kept for sport purposes (race, jumping, etc). A total of 460 horses of different age, gender and breed from 18 centres located in Bursa, Balikesir, Kocaeli, Tekirdag and Eskisehir were examined. Individual faecal samples were collected per rectum or freshly voided faeces. The samples were examined by means of sedimentation+centrifugation-flotation technique used saturated sugar solution (d=1.3) as medium. Anoplocephalidae-eggs were detected in 56 (12.2%) horses, whereas on 8 (44.4%) farms at least one horse was found to be infected. The lowest and the highest within farm prevalence was 4.3% and 70%, respectively. Males and Arabian purebred horses had significantly higher infection rates than females and the other breeds, respectively. Differences in prevalence in relation to age -animals between 1 and 3 years of age being more affected than older and younger ones- are seen.Publication In vivo exposure of Albendazole sulphoxide by Haemonchus contortus and correlation between plasma and target tissue or gastrointestinal content dispositions in goats(Wiley, 2021-04-24) Gökbulut, Cengiz; Çırak, Veli Y.; Aypak, Süleyman; Avcı, Hamdi; Sekkin, Selim; Yalınkılınç, Hande S.; Boğa, Buket; Ayaz, Erol; ÇIRAK, VELİ YILGÖR; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; FYC-2043-2022Sheep and goats are sharing different helminth parasites including Haemonchus contortus. Control of these helminths is based mainly on the use of anthelmintics. However, in goats, the application of anthelmintics is often carried out mainly at dosages determined for sheep without knowing the real effects and metabolism features. One of the several anthelmintic classes used against these parasites is (pro) benzimidazoles which are still widely in use in small ruminants in many countries. The objective of this study was to determine (i) the correlation between plasma and tissue or gastrointestinal content dispositions of ricobendazole (RBZ) in goats and (ii) the in vivo exposure of ricobendazole by H. contortus. Ten goats were experimentally infected with 10,000 larvae of H. contortus. Four weeks of post-infection, the animals received RBZ subcutaneously at 5 mg/kg body weight. Two goats were sacrificed per time at 1, 2, 4, 6 and 12 h after drug administration and, blood, bile, urine, liver, lung, muscle and kidney gastrointestinal tissues/fluids were collected. Adult H. contortus were collected from abomasum, and all samples were analysed by HPLC system. Ricobendazole (RBZ) and its sulphone metabolite were extensively excreted by urine and distributed to all tissues and digestive tract, mainly into the abomasum fluid. RBZ concentration in the lung and ABZSO(2) in the kidney were relatively higher than those of other tissues, respectively. The parent drug and its metabolite were recovered in both male and female H. contortus. This study indicates that in goats the plasma concentration profiles of RBZ are strongly correlated with those achieved in different target tissues or fluids, which in turn, reflect the amount of drug taken up by parasites.