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.
Alireza Talebian Masoudi; Hamidreza Ansari-Renani; Ramezanali Azizi; Azadeh Mirshamsolahi
Volume 20, Issue 1 , May 2018, , Pages 83-94
Abstract
In order to survey slow release mineral-vitamin boluses effects on reproductive performance, wool and follicle structure characteristics of Farahani sheep, 60 head ewes were divided into two control and treatment groups. Control group didn't receive any mineral - vitamin supplement. The treatment group ...
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In order to survey slow release mineral-vitamin boluses effects on reproductive performance, wool and follicle structure characteristics of Farahani sheep, 60 head ewes were divided into two control and treatment groups. Control group didn't receive any mineral - vitamin supplement. The treatment group received slow release mineral-vitamin boluses 15 days before mating. The reproductive performance includes pregnancy rate, lambing rate, abortion rate, weaned rate and means values of fleece weight, staple length, fiber diameter and tenacity of two groups of ewes and secondary to primary follicle ratio(S/P) in treating ewes and their lambs in relation to the control group were evaluated and statistical differences between them were estimated. The result indicated that the slow release mineral-vitamin boluse hadn't significant effect (p