文摘

进步的产卵时间金鱼Carassius auratus不同光照度下,光周期的变化

作者(年代):Bhavna阿帕德海耶和Amita Sarkar

我们的现状研究的目的是操纵的产卵时间金鱼Carassius auratus照片通过使用不同时间和温度制度这样炒一年到头。4使用照片政权代表3治疗和控制。第一张照片政权(控制)在室温下受到的自然光线。第二个水族馆治疗1保持17岁以下信用证7 d 240 c。第三个水族馆代表治疗2受到13 l / 11 d照片在240 c。照片去年水族馆调整15 l / 9 d 240 c。第一个样本30天后开始实验。第二个后50天从一开始的实验。第三是70天后开始的实验中,最后一个是分别后90天。30天后开始的实验中,17 l / d 240 Creached成熟阶段早于其他的比对照组(40天前)。实验后50天从一开始15 l / 9 dat 240 c是治疗1。 The spawning time of 15L/9Dat 240C started 20 days earlier than the control. After,70 days control was the third to reached the ripe stage. The last treatment that reached egg-ripening stage was the 13L/11D at 240C after 90 days fromthe beginning fromthe experiment. The spawning time of second treatment also extend to overlap with that of the control later 20 days.Accordingly, there was an artificial spawning time (additional 40 days) that prolonged the natural spawning season and extended the availability of Carassius fry for a longer period Weight gain, Feed conversion ratio and Gonadosomatic index, were also discussed.