Akademik Veri Yönetim Sistemi
KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI, cilt.14, sa.1, ss.19-24, 2008 (SCI-Expanded)
Effects of organic and inorganic zinc, copper and manganese Supplementations into the diet on plasma malondialdehyde (MDA), nitric oxide (NO), glutation (GSH) and antioxidant activity (AOA) were investigated in totally, 280 white strain laying liens (Lohmann LSL), aged 60 weeks. The experimental animals were divided into 7 different groups as 6 experimental and I control groups consisted of 40 laying liens in each group. Per group also divided into four Subgroup containing 10 laying hens. The diets of the control and experimental groups contained mean 17% crude protein and 2750 kcal/kg metabolizable energy. The proteinate forms were used as organic Sources of Zn, Cu and Mn, whereas the oxide forms were used as inorganic Sources of Zn, Cu and Mn. 50 mg/kg of ZnO, 10 mg/kg of Zn-proteinate, 200 mg/kg of CuO, 50 mg/kg of Cu-proteinate, 30 mg/kg of MnO, 5 mg/kg of Mn-proteinate were added into the basal diets of ZnO, Zn-proteinate, CuO, Cu-proteinate, MnO and Mn-proteinate groups, respectively. Both organic and inorganic sources of Zn decreased plasma MDA and NO concentrations, while AOA remained unchanged, and whereas Zn-proteinate increased GSH concentration. CuO decreased the plasma MDA concentration but it did not alter the plasma NO, GSH and AOA. Cu-proteinate increased the plasma MDA concentration but decreased GSH and AOA. Both MnO and Mn-proteinate decreased the plasma MDA concentration and unchanged the plasma NO, GSH and AOA. It was concluded that both organic and inorganic sources of zinc and Mn decreased the oxidative stress in the laying liens, whereas especially organic copper increased this effect.