Studies on the development of demand-feeding system in fish aquaculture

鱼类养殖按需投喂系统的发展研究

基本信息

批准号：
08556033
负责人：
TABATA Mitsuo
金额：
$ 12.03万
依托单位：
Teikyo University of Science and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

In order to apply demand-feeding system to fish aquaculture, we studied the feeding behavior, growth rate, reward level, diet and feeding device in rainbow trout, red sea bream and yellowtails.1) These fishes learned demand-feeding mostly within several days after subjected to the feeder. The fish showed a good growth performance.2) Rainbow trout displayed daily feeding rhythms with diverse feeding patterns under simulated seasonal conditions. The feeding rhythms were controlled by biological clocks. Trout self-selected macronutrients by means of digestible energies. Time-restricted demand-feeding seemed to be important for the mass aquaculture.3) Demand-feeding of red sea bream reduced the amounts or uneaten foods compared with the automatic feeding. In addition, time-restricted demand-feeding during daytime decreased the uneaten foods, but not the weight gain. Behavioral interaction between the fish, that can or cannot activate the feeding device, was also studied. The daily feeding rhythms were controlled by biological clocks.4) Yellowtails reared in indoor tanks exhibited clear diurnal demand-feeding pattern synchronizing to the given photoperiod, whereas those in outdoor tanks became nocturnal. Moreover, they seemed to maintain routine food intakes by regulating the number of switch-activation when different amounts of food were rewarded. Time-restricted demand feeding effectively decreased the food waste.5) A microcomputer-controlled demand feeding system was designed and developed for outdoor experiments. Importance of switch sensitivity, quick and accurate food deliver was assessed.

为了将需求喂养系统应用于养殖水产养殖，我们研究了虹鳟鱼，红海和黄尾鱼中的喂养行为，生长速度，奖励水平，饮食和喂养装置。1）这些鱼类在接受喂食器后几天内主要在几天之内学习了需求。鱼表现出良好的生长性能。2）彩虹鳟鱼在模拟的季节性条件下显示出具有不同喂养方式的每日喂养节奏。喂养节奏由生物钟控制。鳟鱼通过消化能自我选择的大量营养素。时间限制的需求喂养似乎对大规模水产养殖很重要。3）与自动喂养相比，红海的需求喂养减少了数量或未食用的食物。此外，白天的时间限制需求喂养减少了未食用的食物，但体重增加不会减少。还研究了可以或无法激活喂养装置的鱼之间的行为相互作用。每天的喂养节奏由生物钟控制。4）在室内储罐中饲养的黄尾巴表现出明显的昼夜需求喂养模式，使给定的光周期同步，而室外坦克中的牛则表现出了夜间的夜间。此外，当奖励不同量的食物时，他们似乎通过调节开关激活的数量来维持常规的食物摄入量。时间限制的需求有效地减少了食物废物。5）设计和开发了用于室外实验的微型计算机控制需求进食系统。评估了开关灵敏度，快速准确的食物的重要性。