Zadworny D, Walton J S, Etches R J
Biol Reprod. 1985 Mar;32(2):241-7. doi: 10.1095/biolreprod32.2.241.
Plasma concentrations of prolactin (Prl), glucose, corticosterone, and D(-)-3-hydroxybutyrate (DBHB) were compared in nonlaying, nonincubating turkey hens subjected to feed and/or water deprivation. Neither Prl nor corticosterone concentrations were significantly (P greater than 0.05) altered by any of the treatments, whereas fasting significantly (P less than 0.05) reduced the concentration of glucose and increased the concentration of DBHB. Plasma levels of Prl in incubating hens were significantly (P less than 0.05) reduced by nest deprivation either in the absence of feed and water or when the hens were force-fed the normal intake for a laying hen. After 48 h of nest deprivation, the hens resumed nesting within 5 min of being returned to the pen although the plasma levels of Prl were low. Neither nest attentiveness nor the concentration of Prl were affected by force-feeding the hens while they were incubating eggs. The concentration of glucose increased in response to force-feeding or nest deprivation, whereas the concentration of corticosterone was increased only by force-feeding. These results suggest that Prl may not be involved in the striking changes in both intermediary and water metabolism which occur during incubation in the turkey hen. Furthermore, since incubation behavior can occur in the presence of low concentrations of Prl, elevated levels of Prl during broodiness appear to be maintained by a stimulus associated with the nest itself or some other aspect(s) of the environment.
对处于非产蛋、非孵化期的火鸡母鸡进行限饲和/或限水处理，比较其血浆中催乳素（Prl）、葡萄糖、皮质酮和D(-)-3-羟基丁酸（DBHB）的浓度。任何一种处理均未显著（P>0.05）改变Prl和皮质酮的浓度，而禁食显著（P<0.05）降低了葡萄糖浓度并提高了DBHB浓度。在没有饲料和水的情况下，或者当母鸡被强制饲喂产蛋母鸡的正常摄入量时，剥夺窝巢显著（P<0.05）降低了正在孵化的母鸡的血浆Prl水平。剥夺窝巢48小时后，母鸡被放回鸡舍后5分钟内就恢复了筑巢行为，尽管其血浆Prl水平较低。在母鸡孵蛋时对其进行强制饲喂，既不影响其对窝巢的关注度，也不影响Prl的浓度。强制饲喂或剥夺窝巢会使葡萄糖浓度升高，而仅强制饲喂会使皮质酮浓度升高。这些结果表明，Prl可能不参与火鸡母鸡孵化期间发生的中间代谢和水代谢的显著变化。此外，由于在Prl浓度较低时也能出现孵化行为，就巢期间Prl水平的升高似乎是由与窝巢本身或环境的其他某些方面相关的刺激所维持的。
