哺乳

家猫的哺乳
家猪的哺乳

哺乳(lactation)又称授乳泌乳,是指雌性哺乳动物通过乳腺分泌的乳汁给后代的幼体喂食的行为,在人类的场合此过程称为母乳喂养。无论时期有多久远,只要是哺乳动物的雌性都具有这种特性,无一例外[1]。乳汁分泌的过程需要催乳激素催产素的共同作用。然而棕榈果蝠的雄性也会分泌乳汁,这可能是因为激素失调的缘故。这种现象也可能在新生婴儿身上观察到。多数哺乳动物的乳汁来自乳房,但鸭嘴兽等则通过腹部的沟分泌。

参考资料

  1. ^ Capuco, A. V.; Akers, R. M. The origin and evolution of lactation. Journal of Biology. 2009, 8 (4): 37. PMC 2688910可免费查阅. PMID 19439024. doi:10.1186/jbiol139. 

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