Gross W B, Siegel P B
Poult Sci. 1983 Apr;62(4):592-8. doi: 10.3382/ps.0620592.
Weight gain following a 60-hr fast was influenced 1) by prior experiences of either a presence or an absence of a similar initial fast followed by either being moved to unfamiliar quarters or being fed corticosterone or 2) whether or not the chickens were socialized. Socialization, but not the environmental stresses, increased antibody response to erythrocyte antigens and increased resistance to Escherichia coli challenge. Although the experimental cockerels had increased heterophil/lymphocyte ratios following the feeding of corticosterone, their antibody response to erythrocyte antigen and their resistance to E. coli challenge were not altered. The presence or absence of water deprivation stress early in life failed to alter any results.
60小时禁食后的体重增加受到以下因素影响：1）此前是否有过类似的初始禁食经历，随后是被转移到不熟悉的环境、喂食皮质酮，或者2）这些鸡是否经过社交训练。社交训练而非环境压力，增强了对红细胞抗原的抗体反应，并提高了对大肠杆菌攻击的抵抗力。虽然给实验公鸡喂食皮质酮后其异嗜性粒细胞/淋巴细胞比例增加，但它们对红细胞抗原的抗体反应以及对大肠杆菌攻击的抵抗力并未改变。生命早期是否存在缺水压力并未改变任何结果。
