Richard-Yris M A, Leboucher G, Chadwick A, Garnier D H
Physiol Behav. 1987;40(2):193-9. doi: 10.1016/0031-9384(87)90207-1.
Maternal responses and variations in plasma levels of prolactin and testosterone have been studied in incubating and in non-incubating, non-laying hens during forced adoption experiments. The results demonstrate the ability of incubating hens to display complete maternal behavior as early as the 10th day of incubation after being exposed to stimulation by chicks during one night. Maternal responses also emerged in non-laying hens but more gradually. In both groups, a decline in plasma testosterone occurred after the introduction of the chicks and, in the incubating hens, prolactin levels fell as they abandoned their nests.
在强制收养实验中，对正在孵蛋的母鸡以及未孵蛋、未产蛋的母鸡的母体反应以及催乳素和睾酮的血浆水平变化进行了研究。结果表明，在经过一晚雏鸡刺激后，正在孵蛋的母鸡早在孵化第10天就能表现出完整的母性行为。未产蛋的母鸡也出现了母体反应，但更为缓慢。在两组中，引入雏鸡后血浆睾酮水平均下降，而在正在孵蛋的母鸡中，当它们放弃巢穴时催乳素水平下降。
