trace element deficiency
2., which was compared with the trace element nutritional requirement of NRC(1998) and verdict the excess or the deficiency of the trace element for the typical ration , The results indicate the typical ration for pigs lacks Zn,Cu and Fe to different entent and needs to be added with these trace elements, Mn is enough and needs not to be supplementedIn Exp.
3.The REE and trace element distribution patterns of Tayuan meta-gabbro show enrichment of LREE and incompatible elements, whic h is similar to the character of basalt in Azores platform as the modern E-typ e of enriched mantle. The deficiency of Nb and Ta, however,suggests its island- arc background.
