母体微量元素不足,可导致胎儿发育异常。其表现因不同的元素和含量降低的程度,处于不同的妊娠而各异。母体缺锰的胎儿,常见骨骼异常,表现为软骨营养障碍,长骨厚且短,耳囊,耳骨不能钙化;生后共济失调、脑功能失调,且易惊厥或癫痫样发作。仍未补锰者,则新生儿存活者全部共济失调。受孕的头几天,如母体缺锌,着床的受精卵裂,囊胚最易变异,主要是导致日后的胎儿小肺、肺功 Insufficient maternal trace elements, can lead to abnormal fetal development. Its performance due to the different elements and levels of reduction in different pregnancy and vary. Maternal manganese deficiency fetus, common skeletal abnormalities, manifested as cartilage dysfunction, long bones thick and short, auricle, ear bones can not calcification; postnatal ataxia, brain dysfunction, and easy to convulsions or epileptic seizures. Nematium survivors are still ataxia. The first few days of conception, such as maternal zinc deficiency, implantation of fertilized cleavage, blastocyst most vulnerable to variation, mainly resulting in the future fetal lung, lung function