Browsing by Author "Bayram, D."

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Effects of Lambing Season, Sex and Birth Type on Growth Performance in Norduz Lambs
(Elsevier Science Bv, 2007) Yilmaz, O.; Denk, H.; Bayram, D.
The aim of this study was to evaluate effects of two production systems (spring and winter), sex and birth type on growth performance in Norduz lambs. Data were collected using 103 and 140 lambs born during the winter and spring, respectively. Lambs born in the winter were heavier (P < 0.01) than those born in the spring at birth, 90 and 180 days of age by 0.5, 1.6 and 1.7 kg, respectively. Ram lambs were heavier (P < 0.01) than ewe lambs at birth, 90 and 180 days of age by 0.5, 1.0 and 2.3 kg, respectively, while lambs born as singles were heavier (P < 0.01) than lambs born as twins at birth, 90 and 180 days of age by 0.9, 1.6 and 2.3 kg, respectively. Lambs born in the winter recorded a higher (P < 0.01) pre-weaning ADG (15 g/day) than spring-bom lambs, while ram lambs recorded a higher (P < 0.01) pre-weaning ADG (11g/day) than ewe lambs. The effect of birth type was not significant on pre-weaning ADG. The influence of lambing season and sex were also not significant on post-weaning ADG. Lambs born as singles recorded a higher (P < 0.01) post-weaning ADG (16 g/day) than lambs born as twins. Results suggest the winter season to give rise to heavier lambs at weaning and post-weaning and suggest lambs born in different seasons to have distinctly different growth patterns. The data also confirm that the influence of sex and type of birth on growth to be very important and to be take into account sheep production. (c) 2005 Elsevier B.V. All rights reserved.
The Impact of High Fructose on Cardiovascular System: Role of Α-Lipoic Acid
(Sage Publications Ltd, 2016) Saygin, M.; Asci, H.; Cankara, F. N.; Bayram, D.; Yesilot, S.; Candan, I. A.; Alp, H. H.
The aim of this study was to evaluate the role of alpha-lipoic acid (alpha-LA) on oxidative damage and inflammation that occur in endothelium of aorta and heart while constant consumption of high-fructose corn syrup (HFCS). The rats were randomly divided into three groups with each group containing eight rats. The groups include HFCS, HFCS + alpha-LA treatment, and control. HFCS was given to the rats at a ratio of 30% of F30 corn syrup in drinking water for I 0 weeks. alpha-LA treatment was given to the rats at a dose of 100 mg/kg/day orally for the last 6 weeks. At the end of the experiment, the rats were killed by cervical dislocation. The blood samples were collected for biochemical studies, and the aortic and cardiac tissues were collected for evaluation of oxidant-antioxidant system, tissue bath, and pathological examination. HFCS had increased the levels of malondialdehyde, creatine kinase MB, lactate dehydrogenase, and uric acid and showed significant structural changes in the heart of the rats by histopathology. Those changes were improved by alpha-LA treatment as it was found in this treatment group. Immunohistochemical expressions of tumor necrosis factor cc and inducible nitric oxide synthase were increased in HFCS group, and these receptor levels were decreased by alpha-LA treatment. All the tissue bath studies supported these findings. Chronic consumption of HFCS caused several problems like cardiac and endothelial injury of aorta by hyperuricemia and induced oxidative stress and inflammation. alpha-LA treatment reduced uric acid levels, oxidative stress, and corrected vascular responses. alpha-LA can be added to cardiac drugs due to its cardiovascular protective effects against the cardiovascular diseases.