水产配合饲料入水后的散失率及其水体COD值的变化  

The losing rate of aquatic compound feed and the water COD changes after the addition of feed into the water

作　　者：叶继丹[1] 关瑞章[1] 

机构地区：[1]集美大学厦门市饲料检测与安全评价重点实验室

出　　处：《中国饲料》2008年第4期28-29,共2页China Feed

基　　金：国家科技支撑项目(2006BAD03B03);福建省青年创新基金(2005J036);集美大学科研基金(F04008)

摘　　要：采用烘干干燥法和高锰酸钾法分别测定了市售的罗非鱼沉性饲料、罗非鱼膨化饲料、对虾沉性饲料、牛蛙膨化饲料入水后的散失率及水体COD值随时间的变化。结果表明,四种饲料散失率高低依次为对虾沉性饲料>罗非鱼沉性饲料>罗非鱼膨化饲料>牛蛙膨化饲料。罗非鱼沉性饲料和对虾沉性饲料的散失率较两种膨化饲料高,但其水体COD值比两种膨化饲料低。This experiment was conducted to determine the loss rates of four kinds of pellets with drying method and the COD values with potassium permanganate method after different periods of pellets immersion in distilled water.The pel- lets included tilapia sinking pellet ,shrimp sinking pellet, tilapia expanded pellet and bullfrog expanded pellet. The results indicated that shrimp pellet loss rate was the highest in the four pellets,tilapia sinking pellet ranked the second,tilapia expanded pellet and bullfrog expanded pellet followed in the rear.The loss rates of both sinking pellets were higher than that of both expanded pellets, but COD values were just opposite to loss rates.

关 键 词：散失率 COD值 水中稳定性 

分 类 号：S963.72[农业科学—水产养殖]