Browsing by Author "Dönmez, N"

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The Effect of Ration Supplemented With Zinc on Ecg in Broilers
(Scientific Technical Research Council Turkey, 2001) Çinar, A; Dönmez, N
This study was carried out to evaluate the effects of ration supplemented with zinc on the electrocardiograms of 60 broiler chicks. The chicks were divided into four groups, one control and three experimental groups (II, III, IV). Zinc was given to the experimental groups at doses of 125, 500, 1000 mk/kg respectively, in their ration for 60 days. The electrocardiogram recordings were performed on chicks on the 60(th) day of the experiment. Leads I, II, III, aVR, aVL and aVF were recorded in the electrocardiographs of the chicks. All electrocardiograms exhibited P, R, S and T waves but P wave generally interfered with the T wave. No Q waves were observed. AII the waves in lead I were very low or almost isoelectric. The R and S waves in leads II and III were of about equal amplitude. The T waves in leads I, II, III and aVF were positive but in leads aVR and aVF they were negative. The heart rates of the groups were found to be 363, 362, 400 and 410 per minute respectively, but the differences among the groups were not statistically significant, in the groups, the mean electrical axis of heart was found to be between -60 degrees and -110 degrees, with their averages of -80 degrees, -85 degrees, -92 degrees and -88 degrees respectively.
Effects of Chronic Fluorosis on Electrocardiogram in Sheep
(Humana Press inc, 2003) Dönmez, N; Çinar, A
This study was carried out to evaluate the effects of chronic fluorosis by means of the electrocardiograms in sheep. Ten sheep with fluorosis living around a volcanic mountain (Tendurek Mount) in East Anatolia in Turkey and 10 healthy sheep were used. Leads I, II, III, aVR, aVL, aVF, V-2, V-4, and V-10 were recorded in the electrocardiographs of the sheep. All waves were seen in all derivations. The P-Q interval was significantly (p < 0.05) prolonged and sinus bradycardia was observed in the sheep with fluorosis. As a result of this, the number of heart beats was decreased significantly (p < 0.05); that is, the number of heart beats was 110 +/- 15 in the control group and 75 +/- 10 in sheep with fluorosis.
The Effects of Different Silage Additives on Rumen Protozoan Number and Volatile Fatty Acid Concentration in Sheep Fed Corn Silage
(Elsevier Science Bv, 2003) Dönmez, N; Karsli, MA; Çinar, A; Aksu, T; Baytok, E
The main objective of this study was to determine the effects of different silage additives on protozoan population, genera and total volatile fatty acid (VFA) concentrations and percentage of VFAs in corn silage. Four ruminally fistulated Morkaraman x Kivircik lambs were used in a 4 x 4 Latin square design with 14-day adaptation and 1-day sampling periods. The animals were offered 20% cottonseed meal and 80% corn silage with or without treatment with silage additives, ad libitum intake. Silages used in the experiment were corn silage without treatment, treated with 5% molasses, 0.05% formic acid, and 10 g/t enzyme. Total protozoan number was significantly different among treatments (P < 0.05). It was the highest in sheep fed silage treated with molasses (313.2 x 10(3) ml(-1)) and the lowest in sheep fed silage treated with formic acid (168.0 x 10(3) ml(-1)). Entodinium, Epidinium, Isotricha, Dasytricha, Diplodinium, and Osphyroxscolex types were observed in all treatments, but major protozoan genera were Entodinium, comprising 61-69% of total protozoan population. Total VFA concentration was significantly less in sheep fed enzyme-treated silage compared with other treatments. Percentage of acetic acidwas significantly lower (P < 0.05) in sheep fed silage treated with molasses compared with other treatments, but percentages of propionic acid, and butyric acid were similar among treatments. Ruminal ammonia-N concentrations ranged from 7.71 to 15.87 mg/dl and were lowest in sheep fed enzyme-treated silage among treatments (P < 0.05). In conclusion, the highest protozoan counts were observed in the rumen of sheep fed corn silage treated with molasses. (C) 2003 Elsevier Science B.V. All rights reserved.
Effects of Increasing Zinc Supplementation in Drinking Water on Growth and Thyroid Gland Function and Histology in Broiler Chicks
(M H Schaper Gmbh Co Kg, 2002) Dönmez, HH; Karsli, MA; Meral, I; Dönmez, N; Simsek, N
The aim of the study was to examine the effects of increasing zinc supplementation on growth, feed efficiency and thyroid function and histology in broiler chicks. Sixty new born male broiler chicks were randomly allotted into one of four treatment groups and fed for 60 d. Zinc (Zn) was added into drinking water at the levels of 0, 125, 500, and 1000 mg Zn/L. Body weight gain were significantly higher and feed efficiency were significantly lower in chicks supplemented with 125 mg Zn/L compared with chicks supplemented with 500 or 1000 mg Zn/L at the end of the experiment. Serum Zn concentration linearly increased with the increasing level of Zn intake. Serum triiodothyronine and thyroxine levels and the diameters of follicles of thyroid gland were significantly reduced with high levels (500 and 1000 mg Zn/L) of Zn intake at the end of the experiment. It was concluded that chick receiving 1000 mg Zn/L as ZnSO4 . 7H(2)O in drinking water showed signs of Zn toxicity.
Effects of Zinc Supplementation To Ration on Some Hematological Parameters in Broiler Chicks
(Humana Press inc, 2002) Dönmez, N; Dönmez, HH; Keskin, E; Çelik, I
The aim of the study was to examine the effects of zinc supplementation on some hematological parameters. Sixty newborn male broiler chicks were utilized in the study. Zinc (Zn) was added into drinking water at levels of 0, 125, 500, and 1000 mg/kg. In the study, there was no significant difference between control and Zn-supplemented groups in erythrocyte count, hemoglobin amount, hematocrit levels, total leukocyte count, and differential leukocyte % levels, but the alpha-naphthyl acetate esterase ANAE(+) lymphocyte rate significantly (p< 0.05) increased in the 125-ppm Zn-supplemented group compared with the control group. In conclusion, the data obtained may be beneficial in demonstrating the effects of zinc on, at least, these parameters.