Browsing by Author "Yilmaz, O."

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Comparison of Icodextrin With Thymoquinone: a New Hope for Postoperative Adhesions
(Medknow Publications & Media Pvt Ltd, 2017) Yilmaz, O.; Kiziltan, R.; Celik, S.; Yildirm, S.; Alp, H. H.; Aras, A.; Kotan, C.
Objective: The purpose of this study was to compare the effects of thymoquinone and icodextrin in rats within the framework of an experimental adhesion model. Materials and Methods: Rats were separated into three groups: (1) a control group consisting of rats that had 2 ml of isotonic solution administered intraperitoneally, (2) an ICO group administered with 2 ml of 4% icodextrin, and (3) a TQ group administered thymoquinone (10 mg/kg), all following cecal abrasion. The three groups underwent a reoperation on the 7th postoperative day. Hydroxyproline levels were analyzed in the resected adhesive tissues, and histopathological investigations were conducted. Blood samples were collected for biochemical analyses. Results: Fewer postoperative adhesions were observed in the ICO and TQ groups compared with the control group. A comparison of the TQ and ICO groups revealed lowers levels of postoperative adhesions in the TQ group. Compared with the control group, malondialdehyde, 8-OH-deoxyguanosine/deoxyguanosine (8-OHdG/10dG), Coenzyme Q10 (CoQ10), and CoenzymeQ10/reduced CoenzymeQ10 (CoQ10/CoQ10H) values were found to be lower in the TQ and ICO groups. When the TQ and ICO groups were compared with respect to their biochemical parameters, the results for all of the four parameters were found to be statistically significantly lower in the TQ group (P < 0.000). The levels of hydroxyproline in the control, ICO, and TQ groups were found to be (mean +/- standard deviation) 502.25 +/- 90.39 mu g/g, 342.13 +/- 66.61 mu g/g, and 287.88 +/- 49.59 mu g/g, respectively. Conclusions: A comparison of the antiadhesive effects of thymoquinone and icodextrin revealed thymoquinone to be more effective. These results indicate that thymoquinone is an efficient and strong antiadhesive molecule.
Demographic and Clinicopathological Characteristics of Nonalcoholic Fatty Liver Disease in the East-Southeastern Anatolia Regions in Turkey
(2005) Bahcecioglu, I.H.; Koruk, M.; Yilmaz, O.; Bolukbas, C.; Bolukbas, F.; Tuncer, I.; Ozercan, I.H.
Objective: To identify the demographic and clinicopathological characteristics of patients diagnosed with non-alcoholic fatty liver disease (NAFLD) and the risk factors for fibrosis based on histopathological findings in East-Southeastern Anatolia regions in Turkey. Subjects and Methods: The study included a total of 93 patients diagnosed with NAFLD from 5 different centers. Histopathological findings were evaluated by dividing them into four categories using Matteoni classifications. Cases with fibrosis were further evaluated using Brunt classifications. Results: The patients with a nonalcoholic fatty liver were in the 3rd and 4th decade age groups. The mean age was 38 years, 76% of the patients were male, 85% were overweight, 37% were obese, 18% had type 2 diabetes mellitus, and 80.6% had hyperlipidemia. A multiple regression analysis showed that age, type 2 diabetes mellitus, and aspartate aminotransferase (AST) levels were linked with the severity of the disease. Of the 93 patients, 55 (59.1%) had fibrosis, of which 10.8% were classified as severe. The severity of fibrosis was significantly higher in obese patients. Conclusions: The risk factors for severity of NAFLD included advanced age, type 2 diabetes mellitus and serum AST level, while the risk factor for the severity of fibrosis was obesity. Copyright © 2006 S. Karger AG.
Effect of Timing of Artificial Insemination Relative To Spontaneous Estrus on Reproductive Performance and Calf Gender Ratio in Repeat Breeder Holstein Cows
(Pakistan Agricultural Scientists Forum, 2016) Bayril, T.; Yilmaz, O.; Cak, B.
This study was conducted to investigate the effect of the interval between the onset of spontaneous estrus and artificial insemination (AI) on reproductive performance and calf sex ratio in repeat breeder Holstein cows. Two hundred eighty lactating Holstein cows were used in this study. The animals were artificially inseminated at different times (0-6, 7-12, 13-18, or 19-24 h) after the onset of spontaneous estrus. Reproductive performance did not differ between cows inseminated at 0-6 h (n = 70), 7-12 h (n = 70), 13-18 h (n = 70), or 19-24 h (n = 70) after the onset of estrus [pregnancy rate: 0-6 h, 57.1%; 7-12 h, 65.7%; 13-18 h, 54.3%; and19-24 h, 62.9%; embryonic mortality rate: 0-6 h, 8.5%; 7-12 h, 5.7%; 13-18 h, 5.7%; and19-24 h, 7.1%; calving rate: 0-6 h, 48.6%; 7-12 h, 60%; 13-18 h, 48.6%; and19-24 h, 55.7%; twinning rate: 0-6 h, 2.9%; 7-12 h, 0%; 13-18 h, 5.7%; and 19-24 h 2.9%; and calf sex ratio (F/M): 0-6 h, 64/36%; 7-12 h, 48/52%; 13-18 h, 42/58%; and19-24 h, 46/54%; P>0.05]. In general, pregnancy rates of the groups inseminated at different postpartum times differed (P<0.01) and were higher in the group inseminated at >151 days postpartum. Pregnancy rates were similar in groups inseminated in the second and third parities, but were lower in the group inseminated in the fourth parity. In conclusion, rates of pregnancy, embryonic mortality, calving, and twinning of repeat breeder Holstein cows did not differ between cows subjected to AI at different times after the onset of spontaneous estrus. The timing of AI in repeat breeder cows did not influence the calf sex ratio. Pregnancy rate of repeat breeder cows was influenced by postpartum time and parity number.
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.
Evaluation of the Anthelmentic Activity of Garlic (Allium Sativum) in Mice Naturally Infected With Aspiculuris Tetraptera
(2008) Ayaz, E.; Türel, I.; Gül, A.; Yilmaz, O.
This study was performed to investigate the anthelmentic (nematodes) effect of garlic in Swiss albino mice naturally infected with Aspiculuris tetraptera. Natural infection was determined by the use of cellophane tape method on the perianal region and by the technique of centrifugal flotation of stool samples. The infected mice were divided into three groups; namely, Group 1: garlic treatment groups (n: 18), Group 2: positive control (treated with ivermectin, n: 19) and Group 3: untreated control group (n: 19). The mice in Group 1 were given orally freshly crushed garlic homogenates every day for 7 days. The animals in Group 2 were treated with ivermectin intramuscular at a dose of 0.2 mg/kg body weight. The mice in Group 3 received only serum physiologic orally. After 8 days of administrations, all mice were killed humanely using inhalation anaesthesia and then the parasites in the intestine were counted. It was observed that garlic and ivermectin were 91.24 % and 78.03 % effective against A. tetraptera in naturally infected mice, respectively. Results obtained from this study were compared statistically and differences were found to be significant (p<0.001). It was found that garlic was efficient along the duration of the treatment in mice. Garlic may be useful as an alternative treatment against nematode parasites in animals and human. This article includes a new research using Allium sativum anthelmentic effect on mouse and has been patented. © 2008 Bentham Science Publishers Ltd.
Genetic Variability of Alpha-Casein, Beta-Casein, and Kappa-Casein Genes in Holstein-Friesian, Simmental and Brown Swiss Cattle
(Hellenic veterinary Medical Soc, 2025) Cak, B.; Dede, S.; Yuksek, V; Yilmaz, O.; Demirel, Af
This study aims to determine the genotypes and allele frequencies of polymorphisms of bovine alpha S1-ca-sein (CSN1S1), alpha S2-casein (CSN1S2), /3-casein (CSN2) and kappa-casein (CSN3) genes in Holstein-Friesian, Simmental, and Brown Swiss breeds. DNA was isolated from milk samples and gene regions were amplified using optimized PCR protocols. Sanger sequencing was performed to genotyping PCR products. CSN1S1 and CSN1S2 genes in three cattle breeds were observed to be monomorphic. Three different genotypes were observed for the CSN2 gene in Holstein-Friesian and two genotypes in Brown Swiss, while the Simmental breed was monomorphic. For the CSN3 gene was observed three different genotypes in Holstein-Friesian and Brown Swiss, two different genotypes in Simmental. Also, a novel single nucleotide polymorphism (SNP) was identified in the sequence region in the CSN2 gene exon 7 of three cattle breeds in this study. This SNP, c.249C>G, were non-synonymous, which leads to the change of p.N68K in amino acid residue of bovine /3-casein. This SNP is thought to be detected for the first time in Bos taurus genus. However, it was concluded that it would be appropriate to carry out more studies on this new SNP point in larger populations.
Growth Performance and Mortality in Hybrid Converter Turkeys Reared at High Altitude Region
(Scientific Issues Natl Centre Agrarian Sciences, 2011) Yilmaz, O.; Denk, H.; Kucuk, M.
This study was to evaluate growth performance and mortality in Hybrid Converter turkeys reared under intensive conditions at high altitude region. The present study was carried out at an altitude about 1725 metres above sea level. 5040 (mixed gender) for determination of survival rate and 340 (170 per gender) Hybrid Converter poults for growth performance were utilized in the study. The experiment was terminated at 105 day of age in female and 120 day of age in male poults. Hybrid Converter poults exhibit fast-growing traits, as was observed with the body weights of 9.644 and 12.7 kg at 105 d of age for female and male birds, respectively. Body weight of male poults was 16.094 kg at 120 d of age. The weights of the female and male turkeys did differ significantly (P<0.001). The highest coefficients of variation (CV) for body weight in female poults (9.50% at 75 d of age) and male poults (10.96 % at 15 d of age) were observed. In general, CV of body weights at growth period ranged from 8.12 to 16.69 %. The average mortality for Hybrid Converter poults was 4.25% at 120 d of age. The highest mortality (2.46%) was observed at 10-13 wk of age, while the lowest mortality (0.51%) was observed at 0-4 wk of age. The results of the experiment that growth performance of Hybrid Converter poults reared under intensive conditions at high altitude were within commercial standards. The highest mortality was observed at 10-13 wk of age, in which growth rate was also the highest, while the lowest mortality was observed at 0-4 wk of age, in which growth rate was the lowest.
Growth Performances of Female and Male Holstein Calves Fed Milk and Milk Replacers
(Istanbul University, 2015) Bayril, T.; Yilmaz, O.; Çak, B.
The objective of this study was to compare growth performances of male and female Holstein calves fed milk and milk replacers. A total of 60 Holstein calves were used in the study. Calves were divided into three equal groups. In each group, there were 10 female and 10 male calves. Calves were offered colostrum for 3 days after birth and were weighed at fourth day for the trial. Initial body weights of calves in dietary treatments were statistically similar. The first, second and third groups were fed milk, milk replacer-I (CP 21% and CF 16.5%) and milk replacer-II (CP 24% and CF 18%), respectively. In addition to milk and milk replacers, calves were supplemented with ad libitum concentrate feed and alfalfa. Dietary treatment was significantly effective (P<0.05) on body weight of calves at 60 days of age. In conclusion, growth performances of calves increased with increasing protein content of milk replacer had better than those of calves fed milk replacer containing low-protein. Therefore, during the suckling period, in feeding of Holstein calves, milk or milk replacer containing high-protein should be preferred primarily.
Intraoperatively Testing the Anastomotic Integrity of Esophagojejunostomy Using Methylene Blue
(Sage Publications Ltd, 2017) Celik, S.; Almali, N.; Aras, A.; Yilmaz, O.; Kiziltan, R.
Background: Intraoperative testing of gastrointestinal anastomosis effectively ensures anastomotic integrity. This study investigated whether the routine use of methylene blue intraoperatively identified leaks to reduce the postoperative proportion of clinical leaks. Methods: This study retrospectively analyzed consecutive total gastrectomies performed from January 2007 to December 2014 in a university hospital setting by a general surgical group that exclusively used the methylene blue test. All surgeries were performed for gastric or junctional cancers (n = 198). All reconstructions (Roux-en Y esophagojejunostomy) were performed using a stapler. The methylene blue test was used in 108 cases (group 1) via a nasojejunal tube. No test was performed for the other 90 cases (group 2). Intraoperative leakage rate, postoperative clinical leakage rate, length of hospitalization, and mortality rate were the outcome measures. Results: The intraoperative leakage rate was 7.4% in group 1. The postoperative clinical leakage rate was 8.6%. The postoperative clinical leakage rate was 3.7% in group 1 and 14.4% in group 2 (p = 0.007). There were no postoperative clinical leaks when an intraoperative leak led to concomitant intraoperative repair. The median length of hospital stay was 6 days in group 1 and 8 days in group 2 (p<0.001). One death occurred in each group. No test-related complications were observed. Conclusion: The methylene blue test for esophagojejunostomy is a safe and reliable method for the assessment of anastomosis integrity, especially in cases with difficult esophagojejunostomic construction.
Investigation of Calpastatin (Cast) Gene Polymorphism in Norduz Sheep by Pcr-Rflp Method
(Hellenic veterinary Medical Soc, 2024) Yilmaz, O.; Cak, B.; Demirel, A. F.
The objective of this research was to determine polymorphism in the calpastatin (CAST) gene in a group of 102 Norduz sheep. Polymorphism was identified using the PCR-RFLP technique. The amplified PCR product with the length of 622 bp was digested with restriction enzymes MspI. It was found that the M and N alleles were present in CAST/MspI locus, their frequency being 78.43% and 21.57%, respectively. Homozygous for the M allele (MM) produced two bands of 336 and 286 bp. Three bands of sizes 622, 336 and 286 bp were seen in case of heterozygous genotype (MN), and homozygous for the N allele (NN) showed a 622 bp band only. The frequencies of homozygous MM, heterozygous MN and homozygous NN genotype were 64.7%, 27.5% and 7.8%, respectively. The genotype frequency distributions were in Hardy-Weinberg Equilibrium. In conclusion, the current study is the first study on genotyping of the CAST gene in Norduz sheep. The CAST gene was polymorphic in Norduz sheep. In the CAST gene, the predominant allele in the population was M, with a frequency of 78.43%. The MM and MN genotypes represented 92.2% of the genotype frequencies. The MM genotype was the most common, and NN genotype had the lowest genotype frequency. These results also indicate that in order to be used the polymorphism in the exon 1C/1D region of the CAST gene as a biomarker in Norduz sheep, primarily, association studies with economic traits should be performed.
Investigation of Some Morphological Traits of Boer X Hair F1 Crossbred and Pure Hair Goat Kids Raised in Semi-Intensive Conditions
(Universidad de la Frontera, 2017) Bolacali, M.; Öztürk, Y.; Yilmaz, O.; Küçük, M.; Karslı, M.A.
The aim of the study was to determine various morphological characteristics from birth to the age of 150th day of Boer x Hair goat F1 crossbred (BH) kids and pure Hair goat (HG) kids raised in semi-intensive conditions and reveal factors such as the effects of genotype, dam age, dam’s live weight, year, birth type and sex on this parameter. This study was applied between the years 2011-2012 in Çatak in the Van region and between the years 2013-2014 at the Yuzuncu Yil University Research and Practice Farm. Various body measurements; wither height, back height, rump height, sacrum height, body length, chest length, chest depth, chest circumference, circumference of leg, cannon bone circumference, chest width, front-rump width, mid-rump width were determined 29.8, 28.4, 28.7, 26.2, 28.7, 17.0, 13.3, 30.4, 26.9, 5.2, 5.9, 6.0, and 8.7 cm at birth, respectively; 43.8, 43.8, 44.6, 40.6, 43.6, 22.2, 19.3, 51.7, 41.4, 6.6, 9.2, 9.3, and 11.3 cm at 60th day, respectively; 56.1, 53.4, 54.4, 47.5, 53.3, 27.3, 24.1, 61.4, 49.6, 7.3, 10.6, 11.1, and 13.2 cm at 150th day, respectively for BH kids; 27.3, 25.9, 29.3, 25.3, 27.1, 15.9, 12.3, 29.0, 21.3, 5.1, 5.0, 5.6, and 7.4 cm at birth, respectively; 40.4, 40.1, 42.9, 37.6, 40.5, 22.3, 18.4, 48.1, 36.4, 6.0, 7.9, 9.1, and 10.8 cm at 60th day, respectively; 50.3, 49.2, 51.0, 45.7, 50.4, 27.5, 22.9, 57.3, 43.4, 6.5, 9.5, 10.7, and 11.9 cm at 150th day, respectively for HG kids. When all of the data was considered, it was concluded that the BH kids are much better than the HG kids for both morphological and zoometric values. © 2017, Universidad de la Frontera. All rights reserved.
Investigation of Survival Rate, Growth Performance and Some Body Measurements of Saanen X Hair Goat F1 Crossbred and Pure Hair Goat Kids Raised in Semi-Intensive Conditions
(2013) Yilmaz, O.; Kucuk, M.; Bolacali, M.; Cak, B.
The goal of this study was to determine survival rate, growth performance and some body measurements of Saanen x Hair goat F1 crossbred and pure Hair goat kids raised in semi-intensive conditions. The study was conducted at Research Farm of Yuzuncu Yil University in Van province, Turkey. Data were collected using 72 Saanen x Hair goats F1 crossbred and 41 Hair goat kids born in February and April in 2011. The survival rates of Saanen x Hair goat F1 crossbred and Hair goat kids at 90 (weaning) and 180 days of age were 90.28 and 90.24 %; 84.72 and 90.24 %, respectively. Effects of genotype, gender and birth type on survival rates of kids at 90 and 180 days of age were not significant (P>0.05). Body weights at birth, weaning and 180 days of age of Saanen x Hair goat F1 crossbred and Hair goat kids were 3.13 and 3.15 kg; 12.22 and 11.90 kg; 22.52 and 21.82 kg, respectively. Effects of dam's age (P<0.05) and dam's live weight (P<0.01) on birth weight of kids were significant; effects of gender, birth type (P<0.05) and dam's live weight (P<0.01) on live weight of kids at 90 days of age (weaning) were significant. The effect of only dam's live weight (P<0.01) on live weight of kids at 180 days of age was significant. Wither heights, body lengths, chest circumferences, chest lengths and chest depths of Saanen x Hair goat F1crossbred and Hair goat kids at 180 days of age were 54.5 ve 52.3 cm; 56.1 ve 53.2; 64.3 ve 65.7 cm; 31.4 ve 30.4 cm; 25.7 ve 25.7 cm, respectively. The findings of the present study showed that survival rates and live weights in various growth periods of Saanen x Hair goat F1 crossbred and Hair goat kids raised in semi-intensive conditions were similar. Furthermore, wither heights, chest circumference, chest lengths and chest depths of Saanen x Hair goat F1 crossbred and Hair goat kids did not differ, however body length was significant in favour of Saanen x Hair goat F1 crossbred kids.
Milk Yield Performances of Brown Swiss Cows Raised at Mus Alparslan State Farm in Turkey
(National Centre for Agrarian Sciences, 2015) Cak, B.; Yilmaz, O.
This research was carried out to reveal milk yield performances of Brown Swiss cows bred at Mus Alparslan State Farm in Turkey, and contribute to projection of the farm in the future. In the research, a total of 935 data belonging to 280 cows between the years 2005-2010 were used. Average lactation milk yield, 305-days milk yield, and lactation length of Brown Swiss cows, are determined respectively as 4639.79 kg, 4478.31 kg and 308.83 days. It is founded that effect of lactation number, calving year, and calving season are significant (P < 0.001) on lactation milk yield and 305-days milk yield, but the effect of calving age was not significant (P > 0.05); furthermore effects of calving age, lactation number, calving year, and calving season were not significant (P > 0.05) on lactation length. The results of this study showed that milk yield performances of Brown Swiss cows raised at Mus Alparslan State Farm are better than findings of researches conducted in previous years in the same farm, and lactation length resembles to standard lactation length suggest that herd directing programs is directed well, however lactation milk yield of Brown Swiss cows is lower than findings stated for the same breed cow in some local and foreign literatures. For this reason, making researches for improving milk yield performances of Brown Swiss cows in the farm will be beneficial. © 2015, National Centre for Agrarian Sciences. All Rights reserved.
Morphometric Analysis and Three-Dimensional Computed Tomography Reconstruction of the Long Bones of Femoral and Crural Regions in Van Cats
(Via Medica, 2021) Yilmaz, O.; Demircioglu, I
Background: This study was conducted to determine the morphometric features and to make the three-dimensional (3D) reconstruction of the images obtained by computed tomography (CT) of the main long bones (femur, tibia, fibula) in Van cats, and to reveal the biometric differences between these measurement values of both sexual dimorphism and homotypic variations. Materials and methods: A total of 16 adult Van cats, 8 male and 8 female, were used in the study. The pelvic limb long bones of the cats, which were anesthetized with the ketamine-xylazine combination, were scanned with a CT device and their images were obtained. These images were converted to a 3D structure by means of MIMICS 20.1 (The Materialise Group, Leuven, Belgium) software programme. Then, morphometric, volumetric, surface arae measurements of these bones were calculated and statistical analyses were performed. Results: In the analysis, it was observed that right greatest length (GL), left GL, right greatest length from caput ossis femoris (GLc), left greatest breadth of the distal end (Bd), right volume (V), and left V measurement values of the femur; left GL1, right greatest breadth of the proximal end (Bp), right Bd, left Bd, right smallest breadth of the diaphysis (SD), right V, left V, and right surface area (SA) measurement values of the tibia; right V, left V, right SA, and left SA measurement values of the fibula were statistically significantly higher in male cats than in female cats (p < 0.05). The volume and surface area measurement values of the femur, tibia and fibula of male and female cats were determined as 8.57 +/- 1.33 cm(3) and 7.00 +/- 0.49 cm(3), 64.28 +/- 6.72 cm(2) and 59.42 +/- 4.72 cm(2); 7.56 +/- 1.28 cm(3) and 6.15 +/- 0.52 cm(3), 56.89 +/- 6.47 cm(2) and 52.72 +/- 3.15 cm(2); 1.10 +/- 0.17 cm(3) and 0.83 +/- 0.05 cm(3), 14.18 +/- 1.61 cm(2) and 11.95 +/- 0.48 cm(2), respectively. Conclusions: The statistical differences between the sexes in terms of the measurement parameters of the femur, tibia and fibula in adult Van cats were determined. We believe that these differences can be used in determining morphological variations of Van cats. In addition, it is thought that the data obtained from the present study would be beneficial to veterinary physicians in the clinical application areas in order to evaluate the pathological conditions related to these bones and to the studies in the field of zooarchaeology.
Portal Venous Thrombosis Developing After Torsion of a Wandering Spleen
(Medknow Publications & Media Pvt Ltd, 2017) Yilmaz, O.; Kiziltan, R.; Almali, N.; Aras, A.
Torsion of a wandering spleen is a rare disease. The symptoms and signs of this condition are only present when the splenic pedicle torts. The etiological factors are the congenital absence of the ligaments that hold the spleen in its normal anatomic position, or the relaxation of these ligaments resulting from conditions like trauma and abdominal surgery. We aimed to present a rare case with torsion of wandering spleen that consequently developed thrombosis of portal vein and its branches, taking into consideration the relevant literature.
The Prevalence of Helicobacter Pylori in Patients With Oesophageal Stenosis
(Malaysian Soc Parasitology Tropical Medicine, 2018) Yilmaz, O.; Temur, A.; Almali, N.; Dulger, A. C.; Sasmaz, M., I
Oesophageal strictures often occur following esophagectomy which is performed for cases of oesophageal cancer. These patients require repeated dilation procedures. The aim of this study is to investigate the effects of dietary regimens, which are changed because of stenosis, caused by Helicobacter pylori (H. pylori). In this retrospective study, 28 patients who had operation for oesophageal cancer and underwent dilation due to development of stricture were studied. 30 female and 30 male patients who were admitted to the Gastroenterology Clinic with complaints of dyspepsia and did not receive treatment for the eradication of H. pylori were randomly selected and included in this study as a control group. Patients' histopathological records on the hemogram, biochemistry, and endoscopic biopsy were analysed. There were 26 H. pylori (+) cases (92.8 %) in the stenosis group consisting of 28 patients, and 37 H. pylori (+) cases (61.6%) in the control group consisting of 60 patients. These results were found to be statistically significant (P=0.003). The albumin level in the stenosis group was reported to be statistically low (P=0.002). The incidence of H. pylori was found to be significantly higher in patients with stenosis. We ascribed this outcome due to changes in dietary regimens. Our findings showed that the dietary regimens of all patients who underwent esophagectomy should be regulated during the postoperative period considering H. pylori. The relationship between H. pylori and stenosis was significant, there is a need for further research with a larger sample size to enrich the findings.
Publication Results of the Methods in Epidemiological Clinical and Operations Research (Mecor) Program in Turkey
(Amer Thoracic Soc, 2020) Karakurt, Z.; Yilmaz, O.; Arikan, H.; Ay, P.; Demir, C.; Gurkan, C. Gunduz; Buist, S.
Regression Tree Analysis for Determining of Affecting Factors To Lactation Milk Yield in Brown Swiss Cattle
(2013) Cak, B.; Keskin, S.; Yilmaz, O.
Lactation Milk Yield (LMY) in cows is one of the major characteristics for animal breeding programs. The aim of this study is to investigate the effects of possible environmental factors on lactation milk yield. In this study, 696 records of 280 Brown Swiss cattle that raised at Mus Alparslan State Farm in Turkey were analyzed using regression tree method to determine the several affecting factors to lactation milk yield. Lactation period, lactation number and calving season variables were considered to explanatory variables for lactation milk yield and all of these variables were found statistically significant factors. Lactation period was primarily and lactation number as well as calving season secondary factor. Thus, it can be concluded that optimal calving season may be winter and optimal lactation period can be considered as 307 days or greater for the increasing of milk yield. In addition, optimal lactation number should be greater than 1 for lactation duration is 263 to 292 days. © 2013 Academic Journals Inc.
Slaughter and Carcass Traits of Young Brown Swiss Bulls Raised in Semi-Intensive System
(Medwell online, 2009) Yilmaz, O.; Denk, H.
The study was carried out to investigate some slaughter and carcass traits of young Brown Swiss bulls raised under semi-intensive system. Young Brown Swiss bulls were slaughtered at 24 months of age. The average slaughter weight, hot carcass weight, chilling carcass weight, hot dressing percentage and chilling dressing percentage were 328.40, 183.44, 181.64 kg, 55.99 and 55.11%, respectively. Carcass length, chest depth, rump length, rump circumference, ann length and ann circumference were 151.52, 63.70, 70.22, 70.37, 59.80 cm and 52.57%, respectively. Correlation coefficients for slaughter characteristics and carcass measurements of young Brown Swiss bulls were obtained. In general, positive correlation coefficients were observed for slaughter characteristics. Positive correlation coefficients for slaughter characteristic were high and significant. Only correlations between heart weight with spleen weight and all slaughter traits with internal fat weight were negative and not significant. Significant negative correlation coefficients were found between rump length with chest depth, arm length with rump circumference, ann circumference with rump circumference, arm length with arm circumference from carcass measurements. Overall, the results of the present study suggest that young Brown Swiss bulls can be used in beef production in semi-intensive system and carcass evaluation on different slaughtering weights in different breeding systems can be recommend.
A Study on Milk Compositions of Hair Goat and Saanen X Hair Goat Crossbreed (F1) Under Semi-Intensive Conditions
(Ankara University, 2021) Çak, B.; Yilmaz, O.; Ocak, E.; Demirel, A.F.
This study was carried out to evaluate compositions of milk from Hair goat and Saanen x Hair goat crossbreed (F1) under semi-intensive conditions. The research was conducted on 20 Hair goats and 20 Saanen x Hair goat crossbreed (F1) at Farm for Research and Application of Van Yuzuncu Yil University in Turkey. All the experimental goats were 3 years old and were raised under semi-intensive conditions. In the current study, the average fat, non-fat solid, protein, lactose, total solids, lactic acid, pH values of Hair and crossbreed goat milks were 3.98%, 3.80%; 9.54%, 9.24%; 3.59%, 3.48%; 5.24%, 5.08%; 13.51%, 13.04%; 0.24%, 0.25%; 6.62, 6.64, respectively. Lactation stage had a significant influence (P<0.05; P<0.001) on milk fat, non-fat solid, protein, lactose, total solids contents and lactic acid value in Hair and crossbreed goats' milk. Also, genotype had a significant influence (P<0.001) on non-fat solid, protein, lactose and total solids contents of the milk. In conclusion, Hair goats and crossbreed goats produce milk with a variable milk fat, non-fat solid, protein, lactose, total solids contents at the different stages of lactation. The mean values of milk non-fat solid, protein, lactose and total solids in Hair goats' milk were higher than those of crossbreed goats. Also, milk fat content, lactic acid and pH values in Hair and crossbreed goats' milk were similar. © Ankara University, Faculty of Agriculture.