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Articles by Tekin Sahin
Total Records ( 5 ) for Tekin Sahin
  Sabri Yurtseven , Mehmet Cetin , Irfan Ozturk , Abdullah Can , Mustafa Boga , Tekin Sahin and Huseyin Turkoglu
  This study was performed to evaluate the effect of different feeding systems (choice feeding and conventional system) on performance and emission of carbon dioxide (CO2) and enteric methane (CH4) in dairy Awassi ewes. One chamber was equipped with gas analyzers to measure CH4 and CO2 for 23 h day-1. In total, 16 ewes were used. The ewes were divided into two groups: the Free Choice (FC) group received feed ingredients separately and the Total Mixed Ration (TMR) group received a standard mixed concentrate: forage diet in a ratio of 60:40. The results showed no significant differences between treatments in performance parameters. However, the results of CH4 and CO2 measurement indicated significant differences between groups in the amounts of CH4 and CO2 produced per kg dry matter intake. The ewes in the FC group produced less CH4 per animal than the ewes that received the TMR system. In ewes on the FC system, the level of propionate was greatly increased relative to the total VFA components. There were no significant differences in ruminal pH and acetate level between treatments. The results indicate that the FC system may be a potential mitigating effect on enteric emission of CH4 and CO2.
  Tekin Sahin , Sema Yaralioglu Gurgoze , Ilker Camkerten and Nazmi Yuksek
  This study was performed to investigate, the effect of transport on erythrocyte glutathione peroxidase activity, plasma lipid peroxidations concentrations and some mineral substances levels in feedlot beef cattle. The study material consisted of male beef cattle (n = 30; 1-2 years old), transported from Adana to Sanliurfa. Blood samples were taken before and after transport. Decrease in erythrocyte glutathione peroxidase activity (from 12.70±2.0-9.67±1.1 IU g-1 Hb) and increase in plasma lipid peroxidations concentrations (from 1.627±0.14-2.196±0.26 nmol mL-1) were found in cattle exposed to transport stress. These differences were not statistically different. In addition; transport stress caused significant (p<0.01) decreases in the levels of zinc (from 2.034±0.15-1.503±0.05 μg mL-1), cupper (from 1.608±0.095-1.330±0.072 μg mL-1) and increase in the levels of iron (from 1.60±0.136-2.05±0.125 μg mL-1). Transport stress did not affect Magnesium levels.
  Halil Selcuk Biricik , Nihat Sindak , Adil Ozturk , Tekin Sahin and Ilker Camkerten
  The objective of this study was to determine spectral changes in femoral arterial flow in response to administration of Xylazine (XYL) for sedation. Ten adult dogs weighing between 9 and 16 kg were used in the study. Doppler imaging were performed before and 15-20 min after intramuscular administration of XYL (2% solution, 2.2 mg kg-1, i.m). For the color-coded doppler sonography, a doppler system was used. Once, right femoral artery was localized, the following parameters measured: Peak Systolic (PSV), End Diastolic Velocity (EDV) and Resistive Index (RI). RI was calculated. Duplex scans of femoral artery showed the characteristic triphasic velocity waveform. The mean PSV before sedation was 0.35±0.019 m sec-1. After administration of XYL the mean PSVs significantly decreased to 0.26±0.016 m sec-1, whereas EDV and RI values showed no significant differences.
  Ilker Camkerten , M. Kazim Borku , Aslan Kalinbacak , Guzin Ozkurt Borazan , Tekin Sahin and M. Sinan Aktas
  The aim of this study was to evaluate the clinical utility of lactate level in calves with Bovine Respiratory Diseases (BRD). About 28 calves with bronchopneumonia (trial group) and 20 healthy (control group) were used in this study. While 18 calves in the trial group recovered, 10 of them died in the first 24 h. It was determined that plasma lactate values of these 10 animals were significantly higher (p<0.01) than those of the recovered ones. Consequently, it has been concluded that the level of plasma lactate measurements in calves with BRD is a helpful prognostic parameter in veterinary practice.
  Guzin Ozkurt-Borazan , M. Sinan Aktas , Ilker Camkerten , Ahmet Gokcen , Hudai Ipek , Tekin Sahin and Nilgun Uren-Paksoy
  The aim of this study was to examine erythrocyte Superoxide Dismutase (SOD), Catalase (CAT) and Malondialdehit (MDA) level in bovine with hypodermosis. Study included 9 cattle diagnosed as hypodermosis (study group) and 10 healthy cattle (control group) making a total of 19 in the age group between 16 and 18 months montafon heifer. Parasitological examination in all larvae revealed Hypoderma bovis. No significant differences were observed in erythrocyte SOD, CAT activities and MDA levels between control and study groups. However, mean average of decreased SOD and CAT activities and increased MDA level associated with presence of oxidative stress and antioxidative imbalance in bovine with hypodermosis.
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