Black J R, Ammerman C B, Henry P R, Miles R D
Poult Sci. 1984 Oct;63(10):1999-2006. doi: 10.3382/ps.0631999.
An experiment was conducted with male broiler-type chicks to study tissue uptake of Mn as a measure of biological availability of Mn sources. A basal corn-soybean meal diet (116 ppm Mn) was supplemented with 0, 1000, 2000, or 4000 ppm Mn as either reagent grade sulfate, carbonate, or monoxide and fed ad libitum for 26 days. No toxic effects were noted as expressed by feed intake, weight gain, feed conversion, hematocrit, hemoglobin, or mortality. Analysis of Mn in tissues revealed a highly linear relationship between liver or bone Mn concentration and dietary Mn for all three sources. Manganese concentration in all tissues increased (P less than .01) as dietary Mn increased. Liver and bone Mn accumulation appeared to be excellent indicators of relative biological availability. On the basis of tissue uptake and solubility tests, MnSO4 X H2O was the most available, followed by MnO and MnCO3, respectively. There were no effects of Mn source or level on concentration of Ca, P, Mg, Cu, Zn, or Fe in tissues studied.
用雄性肉仔鸡进行了一项实验，以研究锰的组织摄取情况，以此作为锰源生物学利用率的一种衡量指标。以玉米 - 豆粕基础日粮（锰含量116 ppm）为基础，分别添加0、1000、2000或4000 ppm的锰，形式为试剂级硫酸锰、碳酸锰或氧化锰，自由采食26天。从采食量、体重增加、饲料转化率、红细胞压积、血红蛋白或死亡率来看，未观察到有毒影响。组织中锰的分析表明，对于所有三种来源，肝脏或骨骼中的锰浓度与日粮中的锰之间存在高度线性关系。随着日粮中锰含量的增加，所有组织中的锰浓度均升高（P < 0.01）。肝脏和骨骼中锰的积累似乎是相对生物学利用率的良好指标。基于组织摄取和溶解度测试，一水硫酸锰的利用率最高，其次分别是氧化锰和碳酸锰。锰源或水平对所研究组织中钙、磷、镁、铜、锌或铁的浓度没有影响。
