| 大口黑鲈鱼苗摄食天然饵料和配合饲料的研究 |
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| 引用本文： | 杨和荃,楼允东,唐秀峰,徐宇.大口黑鲈鱼苗摄食天然饵料和配合饲料的研究[J].上海海洋大学学报,1995(3):194-198. |
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| 作者姓名： | 杨和荃 楼允东 唐秀峰 徐宇 |
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| 作者单位： | [1]上海水产大学渔业学院，200090 [2]江苏省高邮市水产局，225600 |
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| 摘 要： | 本文报导了以浮游动物和浮游动物加配合饲料饲养大口黑鲈Micropterus salmoides鱼苗的研究结果。大口黑鲈鱼苗开口摄食轮虫类和无节幼体，其后依次为枝角类和桡足幼体，枝角类和桡足类成体，对食物具有明显的阶段性和选择性。投喂浮游动物加配合饲料组的生长优于浮游动物组。体长和体重日平均增长分别为1．3mm、1．23mm和24．69mg、20．35mg，t检验差异显著。其成活率分别为64．4％和51．5％，二者相差12．9％。可见浮游动物加配合饲料对促进大口黑鲈鱼苗生长和提高成活率都有明显效果。
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| 关 键 词： | 大口黑鲈鱼 配合饲料 鱼苗 天然饵料 枝角类 摄食 成活率 浮游动物 桡足类 成体 |
STUDIES ON THE FEEDING OF LARGE-MOUTH BLACK BASS, MICROPTERUS SALMOIDES LARVA ON NATURAL PREY AND FEED MIXTURE |
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| Yang He-quan,Lou Yun-dong and Tang Xiu-feng.STUDIES ON THE FEEDING OF LARGE-MOUTH BLACK BASS, MICROPTERUS SALMOIDES LARVA ON NATURAL PREY AND FEED MIXTURE[J].Journal of Shanghai Ocean University,1995(3):194-198. |
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| Authors: | Yang He-quan Lou Yun-dong and Tang Xiu-feng |
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| Abstract: | Two methods for rearing fingerling of large-mouth black bass, Mcropterus salmoides with natural prey and supplementing natural prey with feed rnixture were described in this paper. The larvae have significant selectivity to zooplankton in its different developmental stages. The finerling with yolk and oil droplet preferred to feed on rotifera and nauplius as it was 5. 4-6. 8mm in length. It turned to feed on cladocera and copepodid as it grew to 8.1 -20. 0mm. And it began to feed on cladocera and copepoda as it was 21. 3- 30.3mm in length. In that period, the larvae also fed on feed mixture. The proportion of feed mixture in the digestive tract of the fish increased with the growth in body length- Dialy increase in boby length and body weight was 1. 23mm and 20. 35mg respectively after 20 days of rearing with natural prey while they were 1. 43mm and 24. 69mg respectively in the group fed with supplementing natural prey with feed mixture. As for growth performance, the latter is higher than the former. It showed that there is singificant difference between these two rearing practices, by t-test (t=3.19>t0.05 (2. 101). The results implied that feed mixture can be supplementary with natural prey,and it will improve the survival of the fingerling and enhance the growth significantly. |
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| Keywords: | Micropterus salmoides large-mouth black bass natural prey feed mixture |
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