Ahmet Aker

Kocaeli University, Kocaali, Sakarya, Turkey

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Publications (3)3.73 Total impact

  • Source
    Article: The Effects of Dietary Natural Zeolite Supplementation on Performance of Broiler
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    ABSTRACT: This study was conducted with the aim of determining the effects of zeolit (klinopilit) addition in broiler feeds on fattening performances in broiler production. Natural clinoptilolit was added in broiler rations at doses of 0 (control), 1, 3 and 5 %. A total of day-age 240 broiler chicks were used in four experimental groups with 3 replicates (20 broiler in each replicate). Live weight gains, feed consumptions, feed conversion ratios, viabilities and litter parameters were recorded for 6 weeks. Final liveweights were found as 2555, 2459, 2431 and 2530 g for the mixed-sex groups, respectively (P>0.05). Feed consumption did not differ significantly between the groups in 6 weeks (P>0.05), but there are differences between the groups from 2 weeks to 5 weeks (P<0.05). Feed conversion ratios were found as 1.63, 1.71, 1.71 and 1.62, respectively (P>0.05). Zeolit addition did not affect negatively viabilities in each group (95.55, 100.00, 100.00 ve 100.00) (P>0.05). It was concluded that zeolit can be added in broiler rations at ratios of 1-5 % ratios.
    Journal of Animal Production 52(1): 24-32, 2011. 01/2011; 52:24-32.
  • Article: The schizophrenia and Toxoplasma gondii connection: infectious, immune or both?
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    ABSTRACT: Recent research has suggested a possible link between toxoplasmic agents and schizophrenia. We aimed to assess this by measuring Toxoplasma gondii-associated antibodies in schizophrenia patients and controls We used a commercially available enzyme-linked immunosorbent assay (ELISA) kit to measure the level of immunoglobulin G (IgG) and IgM antibodies in serum samples from schizophrenia patients (n=40) and from a group of non-schizophrenic control subjects (n=37) Among schizophrenic patients, 16 (40%) showed IgG seropositivity and two (5%) showed IgM seropositivity. Among the control group, five (13.5%) were found have IgG seropositivity and one (2.7%) showed IgM seropositivity. In our study we found that IgG T gondii antibodies were significantly higher in schizophrenia patients compared with controls This study supports the theory that toxoplasmic agents may have a role in the aetiology of schizophrenia.
    Advances in Therapy 07/2008; 25(7):703-9. · 2.11 Impact Factor
  • Article: Serum iron concentrations, lipid peroxidation and superoxide dismutase activity in Turkish iron miners.
    Ferah Armutcu, Ahmet Gurel, Ahmet Aker
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    ABSTRACT: The effects of iron exposure, on serum iron, serum superoxide dismutase (SOD), a free radical scavenger, and plasma malondialdehyde (MDA), a lipid peroxidation parameter, were investigated in Turkish iron miners, office workers and healthy control subjects. Serum iron levels in both miner and office workers groups were higher than those of healthy controls (p < 0.05). There were higher mean values of plasma MDA levels in both iron miners and office workers compared to controls (p < 0.05). Serum SOD activity in the miner group was lower than that of controls (p < 0.05). These results suggested that elevated MDA levels in both miners and office workers were the result of an increased production and/or decreased catabolism of MDA in chronic iron exposure. These changes in MDA metabolism may be due to iron-induced lipid peroxidation in the blood and related body compartments.
    Environmental Geochemistry and Health 03/2004; 26(1):1-4. · 1.62 Impact Factor