Fundamental Study for Controlling Food Intake in Chickens

控制鸡食量的基础研究

基本信息

批准号：
61560312
负责人：
SONODA Tatsunobu
金额：
$ 1.22万
依托单位：
Miyazaki University, Faculty of Agriculture
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

项目摘要

In order to develop the technique controlling food intake, growth and production in chicken, it is necessary to explore the controlling mechanism, especially central integrative system. Single neuron activity (unit) of the lateral hypothalamic area, i.e., feeding center, was observed in male and female chickens using chronically implanted micro-wire technique. As the results, the meurons had some variations of activity consistent with the stages of feeding behavior.In male chickens at least two types of units were found; during a meal on type (E type) was activated tonically and the type (I type) was inactivated adversely. Furthermore, within E type of units some phasic activation appeared consistently with the start or the end of a bout, a sequence of pecking, or the start of apeck. This indicates that sensory informations form the beak, esophagus or eyes should activate this type of neurons. In order to accelerate feeding behavior it might be effective to strengthen these information … More s. Other physiological informations may activate this neurons, c.f., hunger or satiety substance, which we evidenced to exist in the blood of fasted chickens. Most of the units of I type were recorded with those of E type, indicating that these different types of neurons exist adjacently each other. Units of I types were activated phasically at the investigative behavior, Then this type of neurons should concern to the start of feeding behavior.In female chickens, only on etype of units was observed, which was activated not only tonically during eating, but also phaically at the investigative behavior. Our ethological study made clear that hens spent most of their active time for pecking or scratching the ground, that is, eating was intermingled with investigative movements. This supports that one type of neurons in females is concerned with different behaviros. Existence of sex differences in feeding behavior and neuron activity indicates possibility of sexual difference in controlling techniques of food intake. Less

为了开发控制食物摄入，鸡肉生长和生产的技术，有必要探索控制机制，尤其是中央综合系统。使用慢性植入的微线技术在男性和雌性鸡中观察到下丘脑外侧区域的单神经元活性（单位）。结果，甲隆有一些与喂养行为阶段一致的活动的变化。在类型（E类型）的餐点期间，通常会激活类型（I类型）的类型（I类型）。此外，在E类型中，某些阶段激活与回合的开始或结束，啄食序列或Apeck的开始始终如一。这表明感觉信息形成喙，食道或眼睛应激活这种类型的神经元。为了加速进食行为，加强这些信息可能有效……更多。其他物理信息可能会激活这种神经元，即饥饿或饱腹感，我们证明在禁食鸡的血液中存在这种神经元。 I类型的大多数单元都记录在E类型的单元，表明这些不同类型的神经元相互适当存在。 I类型的单位是在调查行为下进行物理激活的，然后这种类型的神经元应关心喂养行为的开始。在雌性鸡中，只观察到单元的eType，这不仅在饮食过程中被激活，而且在调查行为上也被系统发育。我们的伦理学研究清楚地表明，他的大部分活跃时光都花在啄或刮擦地面上，即饮食与调查运动混合在一起。这支持女性中的一种神经元与不同的行为有关。喂养行为和神经元活动中性别差异的存在表明食物摄入技术控制技术可能存在性差异。较少的