Avrutina A Ia, Kisliuk S M
Zh Evol Biokhim Fiziol. 1978 Sep-Oct;14(5):441-7.
Studies have been made on postembryonic development of the hypophyseal-adrenal system in domestic hens. Most significant functional rearrangements were observed at the 3rd week of life, when corticosteroid content of the blood plasma decreased threefold. Birds subjected to a series of cold stresses at this time, exhibited more rapid sexual maturation, more rapid reaction of the adrenals to exogenous corticotropin and higher resistance to unfavourable factors. Stress expositions in other days of the first month of life also resulted in trace phenomena, although these were less evident. It is suggested that the 3rd week after hatching is a critical period in the development of ihe hypophyseal-adrenal system in hens.
对家鸡垂体-肾上腺系统的胚后发育进行了研究。在出生后第3周观察到最显著的功能重排，此时血浆皮质类固醇含量下降了两倍。此时遭受一系列冷应激的鸡表现出更快的性成熟、肾上腺对外源促肾上腺皮质激素的更快反应以及对不利因素的更高抵抗力。在出生后第一个月的其他日子里进行应激暴露也会产生一些现象，尽管不太明显。有人认为，孵化后第3周是母鸡垂体-肾上腺系统发育的关键时期。
