Effects of Additives on Laying Performance, Metabolic Profile, and Egg Quality of Hens Fed a High Level of Sorghum (Sorghum vulgare) during the Peak Laying Period

Imik, H.,Hayirli, A.,Turgut, L.,Lacin, E.,Celebi, S.,Koc, F.,Yildiz, L. Asian Australasian Association of Animal Productio 2006 Animal Bioscience Vol.19 No.4

This experiment was conducted to determine the effects of supplemental methionine, lysine, choline, and sulfur on laying performance, metabolic parameters, and egg quality of hens fed diets containing sorghum (Sorghum vulgare) during the peak laying period. Lohman layers (n = 144), 30-wk of age as 6 replicate cages of 4 hens, were allocated randomly to receive basal diets containing either 22% corn (B) or 22% sorghum (BS) and diets BS plus 0.57% methionine, 0.66% lysine, 0.47% choline, or 0.05% sulfur for 98 d. Feed intake (FI) and egg production (EP) were recorded daily, egg weight (EW) was measured bi-weekly, and body weight (BW) was measured monthly. A sample of 12 eggs from each experimental group was collected every month to evaluate egg quality. At the end of the experiment, blood samples were collected for metabolite concentrations. Data were analyzed using one-way ANOVA as repeated measures and significant differences between the experimental groups were assessed using Duncan's Multiple Range test. Partial replacement of corn with sorghum in the basal diet did not affect BW, EP, and FCR but increased FI by 5.7% and EW by 2.4%. The effects of additives on laying performance were variable. Except for serum total protein (STP) concentration, other metabolic parameters were not affected by partial replacement of corn with sorghum in the basal diet. Hens fed diet BS had lower SPT concentration than hens fed diet B. Except for methionine supplementation, other supplements ameliorated depression in STP concentration. The additives did not affect other metabolic parameters. Egg quality responses to the experimental diets were also variable. Partial replacement of corn with sorghum in the basal diet did not affect eggshell characteristics (both thickness and stiffness), whereas it had variable effects on inner egg quality parameters (increased yolk index, depressed yolk color, and unaltered albumen index and Haugh unit). In conclusion, laying hen diets could include low-tannin sorghum (0.26%) up to 22% without necessitating extra supplements to overcome compromised performance.

Magnetic Properties of Cobalt-Ion-Implanted SiO₂ Thin Films

F. Yildiz,H. J. Lee,Y. H. Jeong,S. Kazan,B. Aktas,J. H. Song 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6

The physical properties of magnetic-ion-implanted nanoparticle systems depend on the preparation and processing conditions, and this fact may be utilized to design a material system with desired properties. For this purpose, the magnetic properties of various Co implanted SiO₂ thin films were systematically studied. SiO₂ thin films were grown on Pt/Ti/SiO2/Si (100) substrates by using thermal evaporation, and Co ions of different energies (40 and 100 keV) and doses (1, 3, 7, 10, 13 × 1016 ion/㎠) were implanted into the films. Magnetization, ferromagnetic resonance (FMR), and scanning electron microscope (SEM) measurements for the films were carried out either as-prepared or after annealing at 600 ℃. While 40 keV Co ions were spread under the surface of the films and the internal field did not change significantly with dose, 100 keV ions went deeper into the films, and their internal field changed with dose. Post-annealing further induced Conanoparticles with different shapes and sizes in the films. In general, magnetization measurements showed that the freezing temperature of the films shifted to higher temperatures with increasing dose. FMR absorption spectra were recorded as a function of magnetic field at room temperature and the effective magnetization was calculated from the FMR data. We found that the effective magnetization increased with dose while the magnetic anisotropy decreased with dose. The physical properties of magnetic-ion-implanted nanoparticle systems depend on the preparation and processing conditions, and this fact may be utilized to design a material system with desired properties. For this purpose, the magnetic properties of various Co implanted SiO₂ thin films were systematically studied. SiO₂ thin films were grown on Pt/Ti/SiO2/Si (100) substrates by using thermal evaporation, and Co ions of different energies (40 and 100 keV) and doses (1, 3, 7, 10, 13 × 1016 ion/㎠) were implanted into the films. Magnetization, ferromagnetic resonance (FMR), and scanning electron microscope (SEM) measurements for the films were carried out either as-prepared or after annealing at 600 ℃. While 40 keV Co ions were spread under the surface of the films and the internal field did not change significantly with dose, 100 keV ions went deeper into the films, and their internal field changed with dose. Post-annealing further induced Conanoparticles with different shapes and sizes in the films. In general, magnetization measurements showed that the freezing temperature of the films shifted to higher temperatures with increasing dose. FMR absorption spectra were recorded as a function of magnetic field at room temperature and the effective magnetization was calculated from the FMR data. We found that the effective magnetization increased with dose while the magnetic anisotropy decreased with dose.

Physiological Profile of Growing Rats: Effects of Cage Type and Cage Density

Yildiz, A.,Hayirli, A.,Okumus, Z.,Kaynar, O.,Kisa, F. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.2

This experiment was conducted to examine the effects of cage type (CT) and cage density (CD) on physiological variables in growing rats. Sprague Dawley rats (n=108) weighing an average of 46 g were housed in metallic cage with woodchip bedding (MCWB), metallic cage with wire mesh (MCWM), and plastic shoebox with woodchip bedding (PCWB) separately by sex at normal ($160-cm^2/rat$, ND) and high ($80-cm^2/rat$, HD) CD from 3 to 10 wks of age. All cages were in dimension of $24{\times}40{\times}20$ cm ($W{\times}D{\times}H$). At the end of the experiment, blood samples were collected and 6 rats from each cage were sacrificed. No death was observed among rats at ND, whereas mortality rate at HD was 22.3% for males and 13.9% for females. Heart weight was affected by CT. Doubling CD caused 23, 11.8, 17.9, 8.6, 6.9, and 16.4% decreases in BW and weights of heart, liver, kidney, testis, and ovary, respectively. Except for adrenal gland, other organs for males were heavier than for females. Liver weight of males and females responded differently to CT and CD. Comparing with females, males had 7.3 and 5.2% heavier and 9.9% lighter liver weights in MCWB, MCWM, and PCWB, respectively. As CD doubled, liver weight for males and females decreased by 22.4 and 13.1%, respectively. Mean adrenal gland weight increased by 8.4% and decreased by 9.7% for males and females, respectively, with doubling CD. CT affected glucose, TG, Ca, and ALP levels. However, CD did not alter blood chemistry. Rats housed in metallic cages had greater neutrophil count and neutrophil:lymphocyte ratio than rats housed in plastic cages. Doubling CD caused a 24.2% increase in lymphocyte count. There were CT by CD, CT by sex, and CD by sex interaction effects on lymphocyte count. Doubling CD caused 0.1% decrease and 49.8 and 26.7% increases in lymphocyte count for rats housed in MCWB, MCWM, and PCWB, respectively. Comparing with females, lymphocyte count for males housed in MCWB, MCWM, and PCWB had 8.9 and 12.9% greater and 30.3% less lymphocyte counts, respectively. Lymphocyte count decreased by 4.12% for males, whereas it increased by 61.0% for females as CD doubled. Doubling CD resulted in 2.5 and 2.3% increases in erythrocyte count and hematocrit value. These data suggest that animals perform better in metallic cages than in plastic cages and that cage density had pronounceable effects on physiological parameters in a cage type and sex dependent-manner.

Frontal Chondrosarcoma in a Cat

F.Yildiz,A.Gurel,T.Yesildere,K.Ozer 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Chondrosarcoma in a CatF. Yildiz*, A. Gurel, T. Yesildere and K. Ozer1

Long Term Survivors with Metastatic Pancreatic Cancer Treated with Gemcitabine Alone or Plus Cisplatin: a Retrospective Analysis of an Anatolian Society of Medical Oncology Multicenter Study

Inal, Ali,Ciltas, Aydin,Yildiz, Ramazan,Berk, Veli,Kos, F. Tugba,Dane, Faysal,Unek, Ilkay Tugba,Colak, Dilsen,Ozdemir, Nuriye Yildirim,Buyukberber, Suleyman,Gumus, Mahmut,Ozkan, Metin,Isikdogan, Abdur Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.5

Background: The majority of patients with pancreatic cancer present with advanced disease. Systemic chemotherapy has limited impact on overall survival (OS) so that eligible patients should be selected carefully. The aim of this study was to analyze prognostic factors for survival in Turkish advanced pancreatic cancer patients who survived more than one year from the diagnosis of recurrent and/or metastatic disease and receiving gemcitabine (Gem) alone or gemcitabine plus cisplatin (GemCis). Methods: This retrospective evaluation was performed for patients who survived more than one year from the diagnosis of recurrent and/or metastatic disease and who received gemcitabine between December 2005 and August 2011. Twenty-seven potential prognostic variables were chosen for univariate and multivariate analyses to identify prognostic factors associated with survival. Results: Among the 27 variables in univariate analysis, three were identified to have prognostic significance: sex (p = 0.04), peritoneal dissemination (p =0.02) and serum creatinine level (p=0.05). Multivariate analysis by Cox proportional hazard model showed only peritoneal dissemination to be an independent prognostic factor for survival. Conclusion: In conclusion, peritoneal metastasis was identified as an important prognostic factor in metastatic pancreatic cancer patients who survived more than one year from the diagnosis of recurrent and/or metastatic disease and receiving Gem or GemCis. The findings should facilitate pretreatment prediction of survival and can be used for selecting patients for treatment.

The Technical and Financial Effects of Parenteral Supplementation with Selenium and Vitamin E during Late Pregnancy and the Early Lactation Period on the Productivity of Dairy Cattle

T. Bayril,A.S. Yildiz,F. Akdemir,C. Yalcin,M. Kose,O. Yilmaz 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.8

This study aimed to determine the effects of parenteral selenium (Se) and vitamin E supplementation on economic impact, milk yield, and some reproductive parameters in high-yield dairy cows in the dry period and in those at the beginning of lactation. At the beginning of the dry period, cows (n = 323) were randomly divided into three groups as follows: Treatment 1 (T1), Treatment 2 (T2), and Control (C). Cows in group T1 received this preparation 21 days before calving and on calving day, and cows in group T2 received it only on calving day. The cows in the control group did not receive this preparation. Supplementation with Se increased Se serum levels of cows treated at calving day (p<0.05). Differences in milk yield at all weeks and the electrical conductivity values at the 8th and 12th weeks were significant (p<0.05). Supplementation with Se and Vitamin E decreased the incidence of metritis, the number of services per conception and the service period, but had no effects on the incidence of retained fetal membrane. A partial budgeting analysis indicated that Se supplementation was economically profitable; cows in group T1 averaged 240.6$ per cow, those in group T2 averaged 224.6$ per cow. Supplementation with Se and Vitamin E has been found to increase serum Se levels, milk yield, and has positive effects on udder health by decreasing milk conductivity values and incidence of sub-clinical mastitis.

The Technical and Financial Effects of Parenteral Supplementation with Selenium and Vitamin E during Late Pregnancy and the Early Lactation Period on the Productivity of Dairy Cattle

Bayril, T.,Yildiz, A.S.,Akdemir, F.,Yalcin, C.,Kose, M.,Yilmaz, O. Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.8

This study aimed to determine the effects of parenteral selenium (Se) and vitamin E supplementation on economic impact, milk yield, and some reproductive parameters in high-yield dairy cows in the dry period and in those at the beginning of lactation. At the beginning of the dry period, cows (n = 323) were randomly divided into three groups as follows: Treatment 1 (T1), Treatment 2 (T2), and Control (C). Cows in group T1 received this preparation 21 days before calving and on calving day, and cows in group T2 received it only on calving day. The cows in the control group did not receive this preparation. Supplementation with Se increased Se serum levels of cows treated at calving day (p<0.05). Differences in milk yield at all weeks and the electrical conductivity values at the 8th and 12th weeks were significant (p<0.05). Supplementation with Se and Vitamin E decreased the incidence of metritis, the number of services per conception and the service period, but had no effects on the incidence of retained fetal membrane. A partial budgeting analysis indicated that Se supplementation was economically profitable; cows in group T1 averaged 240.6$ per cow, those in group T2 averaged 224.6$ per cow. Supplementation with Se and Vitamin E has been found to increase serum Se levels, milk yield, and has positive effects on udder health by decreasing milk conductivity values and incidence of sub-clinical mastitis.

Oscillatory Magnetic Anisotropy Originating From Quantum Well States In Fe Films

J. Li,M. Przybylski,F. Yildiz,Y. Z. Wu 한국자기학회 2010 한국자기학회 학술연구발표회 논문개요집 Vol.2010 No.12

Investigation of ferromagnetic resonance and damping properties of CoFeB

E. Gokce Polat,C. Deger,F. Yildiz 한국물리학회 2019 Current Applied Physics Vol.19 No.4

In this study, the influences of thin film thickness and post-annealing process on the magnetic properties of CoFeB thin films were investigated. The angular dependency and linewidth of the ferromagnetic resonance signal were used to explore the magnetic behavior of sputtered single-layer and trilayer thin film stacks of CoFeB. A micromagnetic simulation model was employed based on the metropolis algorithm comprising the demagnetizing field and in-plane induced uniaxial anisotropy terms with all relevant contributions. Our results reveal that the direction of magnetization changes from in-plane to out-of-plane as a result of the annealing process and induces a perpendicular magnetic anisotropy in the 1-nm thick CoFeB thin film. The ferromagnetic resonance (FMR) linewidth can be defined well by the intrinsic Gilbert damping effect and the magnetic inhomogeneity contribution in both as-grown and annealed samples. The difference between the linewidths of the single and trilayer film is mainly caused by the spin pumping effect on damping which is associated with the interface layers.