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于 1 995年 1 0月采集本所自繁的稀有鮈鲫 (约 1 .0 3g/ind) ,在 30℃水温下进行摄食 -生长实验 ,研究了从饥饿到饱食 5个摄食水平对不同性别稀有鮈鲫的生长和能量收支的影响。结果表明 ,鱼体干物质和能量含量不受摄食率和性别的影响。随着摄食率的增加 ,雌鱼的湿重、干重和能量特定生长率均呈双对数增加 ,雄鱼湿重特定生长率呈双对数增加 ,而干物质和能量特定生长率呈指数增加。雄鱼生长速度及摄食率低于雌鱼。随着摄食率的增加 ,食物能损失于粪便中的比例均呈上升趋势 ,损失于排泄物中的比例变化不大 ,呈下降趋势 ;用于代谢的比例呈下降趋势 ;用于生长的比例呈上升趋势。除饥饿组外 ,在各个摄食水平 ,雌鱼食物能用于代谢的比例较雄鱼低 ,而用于生长的比例较雄鱼高。
In the year of October 1995, Rare and old crucian carp (about 1.30 g / ind) were collected and subjected to ingestion-growth experiments at a water temperature of 30 ° C to study the effects of different levels of food intake from starvation to satiation The effects of growth and energy budget on sexually distinctive crucian carp. The results showed that the dry matter and energy content of fish were independent of food intake and sex. The wet-weight, dry-weight and energy-specific growth rates of females all presented a double logarithmic increase with the ingestion rate, and the specific growth rate of male wet weight showed a double logarithmic increase while the specific growth rate of dry matter and energy showed an index increase. Male fish growth rate and feeding rate lower than the female. With the increase of food intake, the proportion of food lost in the stool increased, the proportion lost in the excrement changed little, showing a downward trend; the proportion used for metabolism showed a downward trend; the proportion used for growth was Upward trend. Except for the Hunger Group, the proportion of female food that can be used for metabolism at all feeding levels is lower than that of male and higher than that of male.