摘要
北方鱼类越冬期肠内含物多为有机碎屑、藻类、水草、底栖生物及泥沙。肠管充塞度从前肠到中、后肠逐渐增加，最高达４级。不同越冬水体，不同鱼类肠内含物组成及充塞度差别较大。对越冬草鱼进行投喂，可增重。
Under low temperature of winter season,wintering fishes can absorb nourishment from intestinal contents(organic pieces,algae,water plants,silts).The saturation and composition of intestinal contents change with different types of water and fishes.The saturation in the intestine is increased gradually from front intestine,and the latter part of it has the highest saturation and can reach fourth degree.The research result showed that feeding wintering fishes could insure and increase survival rate and growth.
出处
《华北农学报》
CSCD
北大核心
1996年第3期128-132,共5页
Acta Agriculturae Boreali-Sinica
关键词
北方鱼类
越冬期
肠内含物
充塞度
摄食
Wintering fishes
Intestinal content
Saturation
Absorbing
