摘要:为了满足奶牛日粮中矿物质营养需要,探索奶牛发生的变形蹄病的病因,本研究采用火焰原子吸收光谱法对湖南某奶牛青、粗(干稻草)、配合饲料及水中Ag、Cd、Co、Cr、Mo、Pb进行测定,(其中Co、Cr、Mo是动物必需元素,Cd、Pb是有毒有害元素)结果显示:Ag在青草、干稻草、配合饲料及水中的含量分别为7.23±0.029,7.417±0.144,7.43±0.161mg/k,0.091±0.0005mg/L;Cd的含量分别为:3.612+0.530,6.167+1.155,2.472+1.252mg/kg,0.010±0.0002mg/L;Co的含量分别为:0.462+0.101,0.472±0.121,0.482±0.111mg/kg,0.010+0.0002mg/L;Cr的含量分别为:131.969±7.007,120.856±6.154,221.266+21.714mg/kg,0.068±0.0005mg/L;Mo的含量分别为:2.033±0.058,1.733±0.058,2.067±0.058mg/kg,0.041±0.0001mg/L;Pb的含量分别为:5.175±1.150,5.838±1.152,5.172±1.153mg/kg,0.091±0.039mg/L,与饲料中允许量的国家标准进行对比,Co的含量正常,Mo、Cr的含量偏低,Cd的含量超标,Pb在水中的含量超标。