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Öğe Characterization of a timed insemination (TAI) program in non-lactating Brown-Swiss cattle(BLACKWELL PUBLISHING, 2007) Kose, M.; Erdem, H.; Guzeloglu, A.; Dursun, S.; Tekeli, T.[Abstract not Available]Öğe Determination of the incidence of embryonic mortality in synchronized ewes during the breeding season(CSIRO PUBLISHING, 2007) Erdem, H.; Saribay, M. K.; Tekeli, T.[Abstract not Available]Öğe Effect of the administration of flunixin meglumine on pregnancy rates in Holstein heifers(BMJ PUBLISHING GROUP, 2007) Guzeloglu, A.; Erdem, H.; Saribay, M. K.; Thatcher, W. W.; Tekeli, T.Fifty-two 15-month-old Holstein heifers were synchronised with single or double injections of prostaglandin F-2 alpha, followed by an injection of gonadotrophin-releasing hormone (GnRH) 48 hours later, and inseminated 12 to 14 hours after the injection of GnRH (day 0). Half of them were then injected twice intramuscularly with 1.1 mg/kg flunixin meglumine 12 hours apart, on the evening of day 15 and the morning of day 16, and the other 26 were not treated. Pregnancy was diagnosed by ultrasound 29 and 65 days after they were inseminated. On day 29, 20 of the treated heifers were pregnant compared with 13 of the control heifers (P<0.05); on day 65, 18 of the treated heifers were still pregnant compared with 12 of the control heifers (P<0.10).Öğe Efficiency of transabdominal ultrasonography in pregnancy diagnosis during late embryonic and early fetal stages of pregnancy in Konya Merino ewes(WILEY-BLACKWELL PUBLISHING, INC, 2008) Erdem, H.; Saribaym, M. K.; Tekeli, T.[Abstract not Available]Öğe The relationship among vitamin C, beta-carotene, vitamin A, progesterone and oestradiol 17-beta concentrations in plasma and cyst fluid of holstein cows with ovarian cyst(WILEY-BLACKWELL, 2008) Haliloglu, S.; Erdem, H.; Serpek, B.; Tekeli, T.; Bulut, Z.The aims of this study were to determine the concentrations of the progesterone, oestradiol-17-beta, vitamin A, C and beta-carotene in plasma and cyst fluid and to relate these values with cystic diameter and membrane thickness of Holstein cattle with ovarian luteal cyst. 1650 Holstein cows were examined for the presence of the ovarian cyst and luteal and follicular cystic ovaries were obtained following slaughtering in personal slaughterhouse in Konya-Turkey. 15 Luteal and 15 follicular cystic ovaries were distinguished by rectal palpation and by post mortem ultrasonographic examination. Plasma and cyst fluid, hormone and vitamin analyses were carried out by EIA method and spectrophotometric measurement respectively. Although there was no relationship between beta-carotene and vitamin A in plasma and cyst fluid of both cyst type and hormone concentrations, the vitamin C concentration of cyst fluid was found significantly higher in luteal cyst than in follicular cyst. Moreover, there is a positive correlation among values of the vitamin C concentrations of cyst fluid and cystic membrane thickness, plasma and the cyst fluid progesterone concentrations, but there is a negative correlation among the vitamin C concentrations of cystic fluid and oestradiol 17 beta levels of plasma and cyst fluid. In conclusion, vitamin C concentration of cyst fluid supported ultrasonographic and endocrinologic findings. Also, it can be postulated that vitamin C is probably effective on progesterone synthesis in the luteal tissue of cyst.
