The nucleotide sequences in the BDNF coding region of the Baiji had a high level of similarity (>90%) with those of other mammalians, especially with pig (Sus scrofa) (95%) and cow (Bos taurus) (94.7%).

• 序列分析表明；白?豚脑源性神经营养因子基因编码区的核苷酸序列与其它哺乳动物相似性超过90%25；而与猪牛相似性相对较高(分别为95%25和94.；7%25)。