关键词: 大黄鱼饲料, 溶胀率, 溶失率, 化学需氧量, feed for Pseudosciaena crocea, swelling rate, the loss rate of dissolution, chemical oxygen demand

Abstract: In the present study, a serial of Pseudosciaena crocea feeds were assessed, which mainly included seven different types of extruded feeds and five different types of soft pellet diet. The research detected the stability and effect on water quality of the feeds by measuring the swelling rate, the loss rate of dissolution and chemical oxygen demand (COD) after being immersed. The result showed that the swelling rate of the extruded feeds was significantly higher than the soft pellet diet (P<0.01),and the loss rate of dissolution of the extruded feeds was significantly lower than the soft pellet diet (P<0.01) after 1h. The COD of the extruded feeds was significantly higher than the soft pellet diet after 6h. There was significant positive correlation between the particle size and different time of two feeds and the swelling rate, the loss rate of dissolution and COD.