Effects of dietary selenium and vitamin E supplementation on growth traits and Se enrichment of Tan sheep
The effects of different levels of Se and VE on growth traits and selenium enrichment of male Tan sheep were studied.60 weaned lambs with healthy body condition and similar body weight were randomly divided into 4 groups with 15 lambs in each group.Different levels of Se and VE were mixed with basal diet and pelleted to feed four test groups:0.15 mg/kg Se(inorganic)+100 IU/kg VE(group 1),0.15 mg/kg Se(organo)+100 IU/kg VE(group 2),0.30 mg/kg Se(organo)+100 IU/kg VE(group 3),0.15 mg/kg Se(organo)+200 IU/kg VE(group 4).The test period was 60 days.The results showed that the average daily gain(ADG)of group 4 was 51.84％and 31.98％higher than that of group 1 and group 2(P＜0.01)from 0～15 d,and the ADG of group 3 was 19.14％and 28.53％higher than that of group 1 and group 2(P＜0.05)from 30～45 d.The weight of group 4 was the largest and the weight of group 1 was the smallest in the whole stages.There was no significant difference in Se content in different tissues and organ(P＞0.05).The enrichment level of selenium in liver organs was higher than that in dorsal muscle and femoral muscle.The results indicated that compared with inorganic Se,organic Se could improve the growth rate and Se enrichment level of Tan lambs.The diet supplemented with 0.15 mg/kg organic selenium and 200 IU/kg VE was more suitable for the nutritional needs of early growth of lambs.
万方数据
维普
