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Öğe Blood serum concentrations of selenium and glutathione peroxidase activity in Akkaraman sheep(Scientific Technical Research Council Turkey, 2001) Pamukçu, T.; Sel, T.; Yarim, G.Selenium and other essential elements play an important role in animal husbandry. These elements help to minimize infectious diseases, reduce concomitant stresses and bring about optimal productive and reproductive performance. The mean serum selenium concentration of the sheep sampled in this study was 303.65 ng/mi. Such values are considered to be indicative of adequate dietary supplementation. Serum glutathione peroxidase activity in the sheep sampled in this study was also analysed, and the mean glutathione peroxidase activity was 3.65 nmolNADPH+H-/min/mg protein. It is recommended that producers monitor the selenium in serum in order to maintain adequate nutrition and performance in sheep.Öğe Effects of increases in vitamin C supplementation in the laying hen rations on serum concentrations of vitamin C and vitamin A(Ecole Nationale Veterinaire Toulouse, 2002) Yiğit, A.A.; Dikicioglu, T.; Yarim, G.This study was carried out to determine the effects of layer rations containing 0, 50, 100 and 200 mg/kg vitamin C on vitamin C and vitamin A concentrations in serum of hens. A total of 96 commercial hens (28 weeks of age) were used in present experiments. There were a control and three treatment groups, each containing 24 hens. The experimental period lasted 10 weeks. Serum vitamin C and vitamin A concentrations were determined three times at 30, 34 and 38 weeks of ages. Serum vitamin C and vitamin A concentrations increased with increasing amounts of vitamin C in rations. During the experiment, serum vitamin C concentration was increased significantly (p < 0.05) by the addition of 200 mg/kg vitamin C, and serum vitamin A concentration was increased significantly in all groups (p < 0.05). It has been concluded that vitamin C protected vitamin A against oxidation and increased serum vitamin A levels in parallel with increased serum vitamin C.Öğe Pathological, clinical and biochemical investigation of naturally occuring pregnancy toxemia of sheep(Veterinary Faculty, 2003) Kabakci, N.; Yarim, G.; Yarim, M.; Duru, O.; Yagci, B.B.; Kisa, U.A sick ewe in late pregnancy presented with clinical incoordination, lipping, amaurosis, head tilt gait and nervous symptoms such as circling movements. A smell of ketones on the breath was detected. The sick animal died during clinical examination and, together with three more dead animals belonging to the same flock, was submitted to the laboratory for necropsy. The uteri of all pregnant animals contained late-term twin fetuses. The most prominent lesion was extensive fatty infiltration of the liver Massive lipidosis and lipid vacuoles were seen in sections of the livers. In three brains, there was prominent vacuolation in the white matter Urine analysis revealed ketonuria in most of the suspected sheep from the same flock. Serum glucose, cholesterol, high density lipoprotein cholesterol, and blood urea nitrogen concentrations were lower (pless than or equal to0.05) and serum triglycerides, aspartate aminotransferase and alanine aminotransferase activities were higher (pless than or equal to0.05) in these sheep than in the controls. After a change of diet and treatment, with glucose and dexamethasone serum glucose levels significantly increased (pless than or equal to0.001) and urine ketone bodies decreased but the other biocemical differences remained.
