Motivational influences underlying prolactin-induced feeding in doves (Streptopelia risoria).
Motivational influences underlying prolactin-induced feeding in doves (Streptopelia risoria).
复制标题
催乳素诱导的鸽子摄食的动机影响（Streptopelia risoria）。
DOI：
10.1037/0735-7044.114.5.963
复制
发表时间：
2000
影响因子：
1.9
通讯作者：
Buntin,JD
中科院分区：
文献类型：
--
作者：
Gamoke,CA;Moore,JC;Buntin,JD
催乳素(PRL)增加环鸽(Streptopelia Risoria)的摄食量，并可能促进亲鸽在哺育幼鸽时表现出的过度吞噬。这些实验测试了催乳素是否也提高了进食行为的食欲。PRL在可变间隔(VI)强化计划中提高了食物限制鸽子的啄食率，并支持鸽子返回即兴喂养时的持续反应。在PRL治疗前，当食物摄入量被限制在即兴水平时，PRL处理的鸽子学会了啄键反应，但当自由获得食物时，却没有。进食比例计划的中位数转折点在食物受限的鸽子中比接受PRL治疗的食物夹住的鸽子高2-3倍，尽管VI计划的应答率相似。这些结果表明，催乳素提高了喂食的食欲，尽管在本研究中实施的水平的食物限制在这方面更有效。
Prolactin (Prl) increases food consumption in ring doves (Streptopelia risoria) and may promote the hyperphagia exhibited by parent doves when provisioning young. These experiments tested whether Prl also enhances appetitive aspects of feeding behavior. Prl elevated pecking rates in food-restricted doves on a variable-interval (VI) reinforcement schedule and supported continued responding when doves were returned to ad-lib feeding. Prl-treated doves learned the key-pecking response when food intake was clamped at ad-lib levels exhibited before Prl treatment but not when given free access to food. Median break points on a progressive ratio schedule were 2–3 times greater in food-restricted doves than Prl-treated, food-clamped doves even though response rates were similar on VI schedules. These results indicate that Prl enhances appetitive aspects of feeding, although food restriction at the level imposed in this study was more effective in this regard.