Rana Delkash Taleshmekail; mohammad hassan fathi nasari; homayoun farhangfar; mohsen mojtahedi
Volume 22, Issue 2 , June 2020, , Pages 249-258
Abstract
The aim of this study was to investigate the effect of bentonite, kaolin and activated carbon on the absorption of Cu, Fe and Mn by in vitro and in vivo methods in Baluchi lambs. In vitro experiment, the binders effect on the minerals absorption was investigated in a completely randomized design ...
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The aim of this study was to investigate the effect of bentonite, kaolin and activated carbon on the absorption of Cu, Fe and Mn by in vitro and in vivo methods in Baluchi lambs. In vitro experiment, the binders effect on the minerals absorption was investigated in a completely randomized design with factor arrangement with standard solutions of Cu, Fe and Mn with concentrations of 7, 20 and 30 mg/l, respectively, four levels of binders (no binders, 10, 20 and 40 g/l) and three pHs 5.5, 6.4 and 7.5 and incubation for 60 min. In vivo experiment, bentonite, kaolin and activated carbon including 0, 10 and 20 g/kg DM were added to diet of 36 fattening lambs (6-7 months) for 90d in a completely randomized design. Feed intake, weight gain and blood and wool concentration of Cu, Fe and Mn were measured on 0, 45 and 90d. In vitro experiment, activated carbon had the highest and kaolin had the lowest mineral absorption by increasing binders levels and pH (P<0.05). In vivo experiment, the effect of treatments on feed intake, body weight, weight gain, feed conversion ratio and blood and wool concentration of Fe were not significant.The concentration of Cu and Mn in the blood and wool in lambs fed with binder were lower than control treatment (P<0.05). In general, the use of binders, especially activated carbon at low concentrations, causes less absorption of minerals. In vitro methods can be used to select binders instead of animal experiments.
Mokhtar Malaki; Mohammadali Norouzian; Aliakbar Khadem
Volume 15, Issue 2 , October 2013, , Pages 109-115
Abstract
This research was conducted to evaluate the effect of different zinc (Zn) sources on performance, bloodmineral and cell counts of Zandi lambs. 18 male lambs at weaning were supplemented with two differentsources of zinc, 25 ppm ZnSO4 and 25 ppm zinc-peptide added to the basal diet as control. Live bodyweight, ...
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This research was conducted to evaluate the effect of different zinc (Zn) sources on performance, bloodmineral and cell counts of Zandi lambs. 18 male lambs at weaning were supplemented with two differentsources of zinc, 25 ppm ZnSO4 and 25 ppm zinc-peptide added to the basal diet as control. Live bodyweight, weight gain and feed efficiency improved with Zn-peptide supplementation (P<0.05). Sera Znconcentration was higher and copper and iron concentration was lower in zinc supplemented groups(P<0.05). Supplementation of zinc had no effect on blood cell counts except for white blood cells thatdecreased with zinc peptide supplementation (P<0.05). It was concluded that adding 25 ppm zinc peptideto fattening lamb diet improved performance and cause to higher level of blood zinc.