【摘要】 选用5岁、平均体重为500 kg的西门塔尔阉牛3头,以玉米青贮和精料补充料为基础饲粮,采用3×3拉丁方设计,在饲粮中分别添加硒0.1、0.2和0.3 mg·kg-1和维生素E 30、60和90 U·kg-1,共9组,硒水平(mg·kg-1)/维生素E水平(U·kg-1)分别为0.1/30(1组)、0.2/30(2组)、0.3/30(3组)、0.1/60(4组)、0.2/60(5组)、0.3/60(6组)、0.1/90(7组)、0.2/90(8组)、0.3/90(9组),研究在饲粮中添加不同水平的硒对维生素E表观消化率的影响。结果表明,处理8和9组极显著高于2和4组(P<0.01),显著高于1、3、5和7组(P<0.05);1、3、5、6和7组显著高于2和4组(P<0.05)。3、6和7组的GOT活性显著高于其余组(P<0.05)。3和6组的GPT活性极显著高于1组(P<0.01),显著高于2、4、5、7、8和9组(P<0.05);2、4、5、7、8和9组显著高于1组(P<0.05)。3、6和9组的GSH-Px活性极显著高于1、4和5组(P<0.01),显著高于2、7和8组(P<0.05);2、7和8组显著高于1、4和5组(P<0.05)。研究表明,不同硒水平极显著影响牛维生素E消化率。更多还原

【Abstract】 Three Simmental steers(average body weight 500 kg, 5 year old) feeding basal diet consisting of corn silage and concentrate supplement which was added with 0.1, 0.2 and 0.3 mg Se and 30, 60 and 90 U VE per kg diet were used in a systematic 3×3 latin square design. Se(mg·kg-1) /VE(U·kg-1) level in the nine groups were 0.1/30(group 1), 0.2/30(group 2), 0.3/30(group 3), 0.1/60(group 4), 0.2/60(group 5), 0.3/60(group 6), 0.1/90(group 7),0.2/90(group 8) and 0.3/90(group 9), respectively. The nine groups were formed to study the effects of supplementa tion of Se on VE digestibilities and blood biochemical indexes. The results showed that the digestibility of VE in group 8 and 9 were very significantly higher than that in group 2 and 4(P<0.01), significantly higher than that in group 1, 3, 5 and 7(P<0.05). The digestibilities of VE in group 1, 3, 5 and 7 were significantly higher than that in group 2 and 4(P<0.05). GOT activity in groups 3, 6 and 7 was significantly higher than other groups(P<0.05), GPT activity in groups 3 and 6 was very significantly higher than in group 1(P<0.01), was higher significantly than in groups 2, 4, 5, 7, 8 and 9(P<0.05), GPT activity in groups 2, 4, 5, 7, 8 and 9 was higher significantly than in group 1(P<0.05). GSH-Px activity in groups 3, 6 and 9 were very significantly higher than that in group 1, 4 and 5(P<0.01), significantly higher than that in group 2, 7 and 8(P<0.05). GSH-Px activity in group 2, 7 and 8were significantly higher than that in group 1, 4 and 5(P<0.05). The results indicated that different Se level has a very significant influence on vitamin E digestibility.更多还原