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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 ESSENTIAL OIL COMBINATION ON PERFORMANCE, MILK COMPOSITION, BLOOD PARAMETERS AND PREGNANCY RATE IN EARLY LACTATING DAIRY COWS DURING HEAT EXPOSURE(PAKISTAN AGRICULTURAL SCIENTISTS FORUM, 2012) Serbester, U.; Cinar, M.; Ceyhan, A.; Erdem, H.; Gorgulu, M.; Kutlu, H. R.; Celik, L. BaykalThe objective of this study was to determine effect of an essential oil combination (EOC), which contained cinnamaldehyde and diallyl disulfide on performance, milk composition, blood parameters and pregnancy rate of early lactating dairy cows during heat exposure. Twenty five Holstein cows (days in milk= 37.4 +/- 3.09) were assigned to one of two treatment groups: a Control (n=12) and EOC fed (n=13). Cows were fed a total mixed ration comprising concentrate and silage of common vetch with triticale. The concentrate differed only in the supplementation of EOC at 25 mg/kg concentrate (as fed basis). The experiment lasted 11 weeks. Dry matter intake (DMI) and milk production were measured daily while milk samples were taken twice a week. Blood samples were collected weekly, and ultrasonography was performed at 29 d and 42 d post TAI to determine pregnancy rate. Average of ambient temperature, relative humidity and temperature-humidity index (THI) were 25.9 degrees C, 73.4% and 76.8, respectively. The EOC supplementation had no effect (P> 0.05) on performance, milk composition and pregnancy rate. The EOC, however, increased (P< 0.01) insulin concentration, and tended to decrease (P= 0.074) serum total cholesterol concentration, and increase (P= 0.097) NEFA concentration. In conclusion, EOC supplementation in diets of early lactating dairy cows during heat exposure did not affect milk yield and composition, and pregnancy rate. The increase of insulin and reduction of total cholesterol observed in EOC group needs to be confirmed with further research.Öğe EFFECT OF ESTRUS SYNCHRONIZATION PROTOCOLS INCLUDING PGF(2 alpha) AND GnRH ON FERTILITY PARAMETERS IN HAIR GOATS DURING BREEDING SEASON(PAKISTAN AGRICULTURAL SCIENTISTS FORUM, 2017) Cinar, M.; Ceyhan, A.; Yilmaz, O.; Erdem, H.The present study was performed to determine the effect of PGF(2 alpha) and GnRH injections in different time intervals on fertility in Hair goats during breeding season. Totally, 80 primiparous Hair goats were divided into four groups (n=20 in each) according to the body condition scores of the animals. The animals in groups were treated as follows; first group (Ovsynch), GnRH on day 0, PGF(2 alpha) on day 7 and GnRH on day 9; second group (2PG-G), PGF(2 alpha) on day 0, PGF(2 alpha) on day 7 and GnRH on day 9; third group (PG-G), PGF(2 alpha) on day 7 and GnRH on day 9; fourth group (G), GnRH on day 9. Bucks were included into the groups on day 10-14 and insemination was performed during standing heat. Blood samples were collected to determine possible embryonic losses on day 21 for further analysis of serum progesterone concentrations. Transabdominal ultrasonography was performed to detect pregnancy on day 40-45. It was determined that in Ovsynch, 2PG-G, PG-G and G groups, estrous rate was 100%, 95%, 95% and 85%; pregnancy rate was 85%, 95%, 95% and 85%; kidding rate was 100%, 78.9%, 94.7% and 88.2%; twinning rate was 41.2%, 40%, 22.2%, 20%; litter size was 1.41, 1.40, 1.22, 1.20, respectively. However, these parameters did not show any significant difference between groups (P> 0.05). In conclusion, it is suggested that all treatment procedures may be used for estrous synchronization in Hair goats during breeding season due to the satisfactory results.Öğe Effect of ketoprofen administration 15 and 16 days after Al on conception rates in lactating Holstein cows(WILEY-BLACKWELL PUBLISHING, INC, 2008) Guzeloglu, A.; Erdem, H.; Cinar, M.; Kilic, K.; Talmac, M.; Gorgundur, A.; Gumen, A.[Abstract not Available]Öğe Effect of Meloxicam Treatment During Early Pregnancy in Holstein Heifers(WILEY, 2010) Erdem, H.; Güzeloğlu, A.We previously reported that administration of flunixin meglumine two times at a critical stage approaching pregnancy recognition associated with maintenance of the corpus luteum (CL) increased early embryo survival and pregnancy rate via an additive antiluteolytic effect with the conceptus [Vet Rec 160 (2007) 404]. In this study, the objective was to determine if a single administration of meloxicam, a non-steroid anti-inflammatory drug with a longer half-life, could be used instead of flunixin meglumine. This would avoid repeated injections in heifers following insemination at a critical stage to increase pregnancy rate due to its inhibitory effect on prostaglandin F-2 alpha synthesis. Eighty-five, 15- to 18-month-old Holstein heifers were synchronized, and following insemination (day 0) heifers were assigned to receive subcutaneous meloxicam injection (0.5 mg/kg; n = 37) on the afternoon of day 15 or were untreated as a control (n = 48). Pregnancy rates were defined as the percentage of heifers inseminated that were diagnosed pregnant by ultrasound between days 31 and 38 after artificial insemination. Effect of the treatment on pregnancy rates was analysed by chi-square test. Meloxicam treatment on day 15 after insemination dramatically decreased pregnancy rates in the heifers (52%; 25 of 48 in the control group vs 24.3%; 9 of 37 in the meloxicam-treated group; p < 0.01). This result indicates that administration of meloxicam at the time associated with pregnancy recognition processes to maintain the CL was harmful to the pregnancy even though the drug is considered to be safe during pregnancy in cattle.Öğe Effect of meloxicam treatment on pregnancy rates in Holstein heifers(CSIRO PUBLISHING, 2007) Guzeloglu, A.; Erdem, H.[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 Evaluation of Coagulation Profiles in Cattle With Retained Placenta(2009) Irmak, K.; Erdem, H.; Civelek, Turan; Turgut, KürşadResults of this study indicated that cattle with retained placenta had a spectrum of haemostatic dysfunction, 3 of 10 cattle with retained placenta had at least 3 abnormal coagulation profiles (PT, FDPs, PLT).Öğe Evaluation of the use of GnRH after two-dose PGF(2 alpha) treatment for a timed insemination programme in Holstein dairy heifers(BLACKWELL PUBLISHING, 2007) Erdem, H.; Guzeloglu, A.[Abstract not Available]Öğe Evaluation of tularaemia courses: a multicentre study from Turkey(ELSEVIER SCI LTD, 2014) Erdem, H.; Ozturk-Engin, D.; Yesilyurt, M.; Karabay, O.; Elaldi, N.; Celebi, G.; Korkmaz, N.In this multicentre study, which is the largest case series ever reported, we aimed to describe the features of tularaemia to provide detailed information. We retrospectively included 1034 patients from 41 medical centres. Before the definite diagnosis of tularaemia, tonsillitis (n=653, 63%) and/or pharyngitis (n=146, 14%) were the most frequent preliminary diagnoses. The most frequent clinical presentations were oropharyngeal (n=832, 85.3%), glandular (n=136, 13.1%) and oculoglandular (n=105, 10.1%) forms. In 987 patients (95.5%), the lymph nodes were reported to be enlarged, most frequently at the cervical chain jugular (n=599, 58%), submandibular (n=401, 39%), and periauricular (n=55, 5%). Ultrasound imaging showed hyperechoic and hypoechoic patterns (59% and 25%, respectively). Granulomatous inflammation was the most frequent histological finding (56%). The patients were previously given antibiotics for 1176 episodes, mostly with -lactam/-lactamase inhibitors (n=793, 76%). Antituberculosis medications were provided in seven (2%) cases. The patients were given rational antibiotics for tularaemia after the start of symptoms, with a mean of 26.8 +/- 37.5days. Treatment failure was considered to have occurred in 495 patients (48%). The most frequent reasons for failure were the production of suppuration in the lymph nodes after the start of treatment (n=426, 86.1%), the formation of new lymphadenomegalies under treatment (n=146, 29.5%), and persisting complaints despite 2weeks of treatment (n=77, 15.6%). Fine-needle aspiration was performed in 521 patients (50%) as the most frequent drainage method. In conclusion, tularaemia is a long-lasting but curable disease in this part of the world. However, the treatment strategy still needs optimization.Öğe Prevention of embryonic death using different treatment procedures in ewes(WILEY-BLACKWELL PUBLISHING, INC, 2006) Ataman, M. B.; Akoz, M.; Saribay, M. K.; Erdem, H.[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.Öğe The Relationship Between Ascorbic Acid, Oestradiol 17 Beta and Progesterone in Plasma and in Ovaries During the Sexual Cycle in Cattle(ECOLE NATIONALE VETERINAIRE TOULOUSE, 2001) Serpek, B.; Başpınar, N.; Haliloğlu, S.; Erdem, H.This study was carried out to detect the relationships between levels of vitamin C in plasma, corpus luteum, follicular fluid and those of progesterone and oestradiol 17 beta in Holstein cows getting through different periods of sexual cycle, presented at slaughterhouse. Prior to slaughter, blood samples from each cow were collected. After slaughter, ovaries of animals were taken then, the stage of sexual cycle was determined post-mortem. Diameters of corpora lutea and follicles were determined by ultrasonography. Follicular fluids were aspirated while corpora lutea were incised and weighted. The progesterone and oestradiol 17 beta concentrations were determined by EIA method. Levels of vitamin C were determined by spectrophotometer. Vitamin C concentrations in the corpus luteum were correlated with weights/diameters of corpora lutea as well as plasma progesterone levels. In addition, there was also a positive correlation between plasma vitamin C levels and diameter of the corpus luteum. Furthermore, a positive correlation was also evidenced between plasma progesterone levels and diameter/weight of corpora lutea. Oestradiol 17 beta levels in follicle fluids increase in parallel with an increase in follicle diameter. On the contrary, small follicles, irrespective of stage of oestrus cycle had, significantly higher vitamin C content than large follicles. In conclusion, it may be speculated that vitamin C might be used in the synthesis of collagen during formation of the corpus luteum, consumed in increased quantities while oestradiol 17 beta biosynthesis occurred.Öğe The Relationship Between Ascorbic Acid, Oestradiol 17? And Progesterone in Plasma and in Ovaries During the Sexual Cycle in Cattle(2001) Serpek, B.; Başpınar, N.; Haliloğlu, S.; Erdem, H.This study was carried out to detect the relationships between levels of vitamin C in plasma, corpus luteum, follicular fluid and those of progesterone and oestradiol 17? in Holstein cows getting through different periods of sexual cycle, presented at slaughterhouse. Prior to slaughter, blood samples from each cow were collected. After slaughter, ovaries of animals were taken then, the stage of sexual cycle was determined post-mortem. Diameters of corpora lutea and follicles were determined by ultrasonography. Follicular fluids were aspirated while corpora lutea were incised and weighted. The progesterone and oestradiol 17? concentrations were determined by EIA method. Levels of vitamin C were determined by spectrophotometer. Vitamin C concentrations in the corpus luteum were correlated with weights/diameters of corpora lutea as well as plasma progesterone levels. In addition, there was also a positive correlation between plasma vitamin C levels and diameter of the corpus luteum. Furthermore, a positive correlation was also evidenced between plasma progesterone levels and diameter/weight of corpora lutea. Oestradiol 17? levels in follicle fluids increase in parallel with an increase in follicle diameter. On the contrary, small follicles, irrespective of stage of oestrus cycle had, significantly higher vitamin C content than large follicles. In conclusion, it may be speculated that vitamin C might be used in the synthesis of collagen during formation of the corpus luteum, consumed in increased quantities while oestradiol 17? biosynthesis occurred.Öğe Response of Four Grapevine (Vitis Spp.) Genotypes to Direct or Bicarbonate-Induced Iron Deficiency(Spanish Natl Inst Agricultural & Food Research & Technolo, 2010) Sabır, Ali; Bilir-Ekbic, Hatice; Erdem, H.; Tangolar, S.In Turkey, calcareous soil conditions usually cause significant decreases in grape yield. Understanding the physiological responses of grapevine genotypes under such conditions would yield invaluable knowledge to recover these problems. This study was thus conducted on the comparative evaluation of the responses of four Vitis spp. materials (a cultivar, 'Alphonse Lavallee', and three rootstocks, 'Fercal', '99 R' and '1613 C'), differing in tolerance potential to direct and lime-induced chlorosis. In greenhouse, rooted cuttings were grown in inert perlite using containers for two years with complete Hoagland nutrients solution except for Fe as variable. The experiment comprised five applications performed for three times per year. Iron applications (FeNaEDTA) in 9 and 36 mg L(-1) doses and their combinations with 840 mg L(-1) NaHCO(3) were compared with control (iron-free Hoagland solution). FeNaEDTA addition into nutrient solution induced significant increases in iron and chlorophyll contents across the genotypes. The highest Fe level was determined in 'Fercal' (169.8 mg kg(-1)) with 36 mg L(-1) FeNaEDTA. Bicarbonate additions restricted the vegetative development of '1613 C'. For instance, iron content of '99 R' was 137.9 mg kg(-1) when treated with 9 mg L(-1) FeNaEDTA, whereas the iron value reduced to 73.9 mg kg(-1) when NaHCO(3) was added. 'Alphonse Lavallee' and 'Fercal' displayed their lime-tolerances by exhibiting little reduction of both iron and chlorophyll contents. Therefore, 'Fercal' would be proven as a favorable rootstock for regions with calcareous soil. Tolerance to NaHCO(3)-induced Fe shortage appeared to be genotype-dependent. Chlorophyll content of young leaves positively correlated with Fe concentration, indicating the vital role of iron in chlorophyll content of leaves.Öğe Ultrasonographic Examination of the Scrotal Content in the Rabbit(Wiley-Blackwell Publishing, Inc, 2009) Aksoy, M.; Erdem, H.; Hatipoglu, F.; Lehimcioğlu, N. C.; Akman, O.; Özkan, K.This study was performed to describe a practical technique for ultrasound examination of the scrotal content of the rabbit. The scrotal content of normal rabbits and those with induced lesions (i.e. needle biopsy of the testis and epididymal ligation) were viewed using a portable scanner connected to a 5 or 7.5 MHz real time, B-mode linear array transducer. The effect of frequency (5 and 7.5 MHz), pad material placed under the testicle (rubber, plastic and carton) and the presence of a water sack between the probe and organ were examined to optimize the technique. The best image quality was obtained using a 5-MHz probe when the testicle was fixed on a rubber pad and covered by a water sack. Testicular parenchyma was imaged as homogeneous and moderately echoic. Caput and cauda epididymis were identified as homogeneous and less echoic compared with the testis parenchyma. Variations in the testicular echotexture that occur secondarily to epididymal ligation and testis biopsy could be screened readily. In conclusion, real-time ultrasonography, performed as described in this study, may provide a valuable tool to screen scrotal contents and to identify certain pathological conditions that affect fertility in the rabbit.