Person: GONCAGÜL, GÜLŞEN
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GONCAGÜL
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GÜLŞEN
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Publication Antimicrobial susceptibility of bacteria isolated from goats with subclinical mastitis in the southern marmara region of Turkey(Polish Soc Veterinary Sciences Editorial Office, 2021-05-01) Gunaydin, Elcin; Cokal, Yavuz; Goncagul, Gulsen; GONCAGÜL, GÜLŞEN; Bursa Uludağ Üniversitesi/Mennan Pasinli Meslek Yüksek Okulu.; HPG-8698-2023The mastitis of dairy goats is a disease of economic importance worldwide and is mostly associated with bacterial infections. The aim of this study was to isolate the bacteria causing subclinical mastitis, and determine the susceptibility of some clinical isolates against several antimicrobial agents frequently used to control bacterial subclinical mastitis in dairy goats in the Southern Marmara Region. A total of 68 Saanen goats were used for this investigation and subclinical mastitis was determined by using California Mastitis Test. As a result of bacteriological analysis of milk samples, 30 different bacteria species have been identified and non-aureus staphylococci found to be the predominant bacteria species with the rate of 22.1%. The species with the highest isolation rate among the isolates were Escherichia coli (18.9%), Staphylococcus aureus (15.7%), Streptococcus agalactiae (14.2%) and Staphylococcus epidermidis (7.9%). The antimicrobial susceptibility of the high isolation rate species including Escherichia coli, Staphylococcus aureus, Streptococcus agalactiae, Staphylococcus epidermidis, Streptococcus uberis, Enterococcus faecalis, Staphylococcus haemolyticus and Mannheimia haemolytica to twelve antibiotics were determined by disc diffusion method. Bacterial strains analyzed showed highest sensitivity to ofloxacin (87.9%), followed by cefuroxime (85.8%) and cefazolin (83.6%). In conclusion, subclinical mastitis still remains a problem in dairy goats, and for the elimination of subclinical mastitis, besides protective measures, determination of the bacteria causing mastitis and their antibiotic sensitivities should be a priority.Publication Investigation of salmonella SPP. and thermophilic campylobacter SPP. In feeds from commercial layer farms in bandırma(Parlar Scientific Publications (P S P), 2021-01-01) Günaydın, Elçin; Cokal, Yavuz; Goncagül, Gülşen; GONCAGÜL, GÜLŞEN; HPG-8698-2023Salmonella and Campylobacter infections are the most important diseases worldwide, and poultry and its food products play an important role in the transmission of both infections to humans. Therefore, the surveillance studies on the sources of pathogenic micro-organisms contamination of poultry flocks are important. In this study, Salmonella spp. and thetntophilic Campylobacter spp. were surveyed in feeds from commercial layer fauns making their own feeds. For this purpose, 24 layer fauns were visited in Banditina and a total 72 feed samples were collected to be three feed samples from each feed mill's finished feed areas. In the result of the study, Salmonella spp. were isolated from 4 out of 24 (16.66%) finished feed areas and all of the other feed samples collected finished feed areas of 20 feed mills (83.33%) were found to be negative for Salmonella. Salmonella positive feed samples were serotyped as S. Typhimurium. Also, all feed samples were negative for the presence of thermophilic Campylobacter spp. This results show that the evidence that feed may be a risk factor for the contamination of Salmonella to flocks making their own feeds. Moreover, detection of S. Typhimurium given top priority by EU due to their public health concern from feed samples was thought to be a candidate of contamination source of egg and egg by-products. To summarize, two food-borne pathogens should be thoroughly investigated in feed samples in Salmonella and Camplobacter surveillance programs at poultry. and contamination of feed samples should be minimized through strict control programs in order to provide healthy poultry units. poultry by-products for the maintenance of public health.Publication Rev-1 conjunctival vaccine administration in Turkey(Polish Soc Veterinary Sciences Editorial Office, 2021-11-01) Goncagül, Gülşen; Günaydın, Elçin; Kardoğan, Özlem; Cokal, Yavuz; Salcı, Emsal Sinem Özdemir; GONCAGÜL, GÜLŞEN; ÖZDEMİR SALCI, EMSAL SİNEM; Bursa Uludağ Üniversitesi/Mennan Pasinli Atçılık Meslek Yüksekokulu; Bursa Uludağ Üniversitesi/Veteriner Fakültesi; AAH-5294-2021; CRL-5667-2022Brucellosis in sheep and goats has a major economic and zoonotic importance, and implementation of strategies for its control and eradication is essential in endemic areas. In this study, the enhanced abortion cases in small ruminants after conjunctival Rev-1 vaccine administration was examined by PCR in terms of probability of vaccine induced abort cases. Of the examined 77 cotyledons from the aborted fetuses belonging to 68 sheep and 9 goats, 70 (90.90%) were found to harbour Brucella spp. DNA. In the first, second and third trimester of gestation, the rate of 100%, 40% and 42.85% positive results were determined from the cotyledons of the small ruminants, respectively. In conclusion, the conjunctival route of Rev-1 vaccine administration was safe during field vaccination, compatible with the serological tests and induces less abortion compared with the subcutaneous route as long as the period of pregnancy is taken into consideration during the vaccination period.