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Öğe Effects of boron supplementation to the diet on tibia mineral concentrations, peripheral blood leucocytes percentages and some selected variables of layers(EUGEN ULMER GMBH CO, 2007) Kurtoglu, V.; Kurtoglu, Firuze; Sur, E.; Bulut, Z.; Onder, F.In this study the effects of 0, 50, 100, 150, 200 and 250 mg/kg boron (B) supplementation to diets of laying hens on tibia B, Ca and P (inorganic) concentrations, tibia weight and ash levels (in % and g DM), leucocyte counts (PBL) and positivity of ANAE percentages in peripheral blood were investigated. Boron caused significant (P<0.001) increases of tibia B concentrations but decreased tibia Ca level (P<0.001). Supplementation of B did not affect tibia ash and weight. Whole blood haematocrit and haemoglobin counts were insignificantly (P>0.05) increased by B additions. There was no effect of B supplementation on peripheral blood ANAE percentages and splenic plasma cell counts (SPCC). In general, evidence from this study suggests that the effects of B supplementation on mineral metabolism may be modified by treatment time, the age of the birds, or the type of animal used. But, further research is needed in order to investigate the interaction between B and Ca to obtain maximum beneficial effects on bone metabolism of laying hens.Öğe The Effects of Various Levels of Boron Supplementation on the Performance and Some Plasma Mineral and Metabolites of Wethers(MEDWELL ONLINE, 2012) Kurtoglu, Varol; Kurtoglu, Firuze; Polat, Esat Sami; Gurbuz, EmelIn this study, the effects of various levels (0, 15, 30, 45 ppm) of Boron (B) supplementation to the wethers diet on performance parameters such as body weight, body weight gain, feed consumption, feed convertion ratio and serum Ca, P, Mg, glucose, ALP, triglyceride, total cholesterol, blood urea nitrogen, albumin and total protein levels were investigated. As animal material, a total of 32 merino male wethers 8 months age were used. These animals were divided 4 groups consisting 8 animals in each. Animals were housed and fed in individual cage. Before the experiment all animals were weighed and were grouped in equal body weight mean. This trial was made in University of Selcuk, Veterinary Faculty Experimental Farm and was lasted at 56 days. As a boron source, sodium borate was added to the diets. Boron was not supplemented to the diets of control while trial groups (group 2-4) included 15, 30 and 45 ppm B, respectively. Body weight datas were obtained on 14, 28, 42 and 56 days. Ca, Mg, P, glucose, ALP, triglyceride, total cholesterol, blood urea nitrogen, albumin and total protein were determined by spectrophotometer in blood samples obtained by vena jugularis on the 1, 28 and 56 days of the trial. Boron supplementation were increased on body weight gain and feed convertion ratio on some periods (p < 0.05). Boron additions also significantly affected the serum Ca, Mg and ALP values. In conclusion, boron might be have beneficial effects on performances and some blood parameters of wethers.Öğe Effects of vitamin e supplementation on antioxidation and lipid profiles of rats on diets supplemented with cholesterol and olive oil(ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC, 2008) Kurtoglu, Firuze; Kurtoglu, Varol; Sivrikaya, AbdullahLipid peroxidation (LPO) has been identified as an important component of atherosclerosis. In this study, the effects of supplementation with cholesterol (0.5%), olive oil (5%) and vitamin E (0.05%) on erythrocyte glutathione (GSH), plasma malondialdehyde (MDA), total cholesterol, HDL-LDL cholesterol and triacylglycerol, brain and liver MDA and GSH concentrations of rats were investigated. A total of 50 Sprague-Dawley male rats aged 6 months, and of equal body weight were used and fed a standard ration ad libitum. Animals were housed in the University of Selcuk, Veterinary Faculty Experimental Animals Unit. The experiment lasted 60 days and there were five experimental groups as follows: 1. Control, 2. Cholesterol (0.5%), 3. Olive oil (5%), 4. Cholesterol plus vitamin E (0.05%), 5. Olive oil plus vitamin E (0.05%). At the end of the experiment, blood samples were taken by cardiac puncture and erythrocyte GSH, plasma MDA, cholesterol, HDL-LDL cholesterol, triacylglycerol and also GSH and MDA concentrations in brain and liver tissue of rats were spectrophotometrically determined. Supplementation of olive oil and cholesterol into rat diets (groups 2 and 3) caused significant differences in lipid parameters; HDL cholesterol concentrations were increased in the olive oil group and LDL cholesterol was lower than in the cholesterol fed group. Moreover, these decreases in LDL and triacylglycerol concentrations were more significant with vitamin E supplementation. The high plasma MDA concentrations showed that lipid peroxidation occurred in the olive oil group and the highest brain MDA concentrations were determined also in the olive oil group. These findings suggest that vitamin E addition may decrease the sensitivities of several oils to oxidation and that monounsaturated fatty acids in olive oil may decrease the incidence of atherosclerosis by regulating blood lipid profiles.Öğe Evaluation of pH and calcium ion release of Acroseal sealer in comparison with Apexit and Sealapex sealers(MOSBY-ELSEVIER, 2007) Eldeniz, Ayce Unverdi; Erdemir, Ali; Kurtoglu, Firuze; Esener, TimurObjective. This is an in vitro assessment of pH level and calcium ion release exhibited by 3 calcium hydroxide-based root canal sealers-Sealapex, Apexit, and Acroseal. Study design. The materials were prepared according to the manufacturers' instructions and placed in 1 cm long and 4 mm diameter tubes. The tubes were then immersed in a glass flask containing 10 mL bidistilled water (n = 15), which was sealed and stored at 37 degrees C before the materials had set. The control group contained bidistilled water with empty tubes (n = 12). At predetermined time intervals (24 h, 96 h, and 7, 15, and 28 days) the pH of the bidistilled water was tested with a pH meter and for released calcium by using spectrophotometry. The data were statistically analyzed using 1-way analysis of variance for the comparison of the materials at each time point. If the difference was significant, individual comparisons were performed by Tukey multiple comparisons test (alpha = .05). Results. Sealapex produced higher pH and released significantly higher calcium amounts than the other 2 sealers at all periods (P < .05). Apexit showed higher calcium release than Acroseal at the end of 15 days (P < .05). There was no significant difference in the pH between Apexit and Acroseal (P > .05). Conclusion. The new Acroseal sealer presented the least calcium ion release and pH than Sealapex and less calcium ion release than Apexit sealer.
