优化池中鲤鱼生长和生产的不同水交换制度的评价

P. Jha
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引用次数: 3

摘要

研究了在以外源浮游动物为食物的池中,不同的水交换制度对鲤鱼生长和存活的影响。鱼苗(0.15±0.012g)以0.5鱼/升(T1和T2)的速度储存在室外混凝土罐中;1.0鱼/升(T3和T4);和1.5鱼/升(T5和T6),并培养三个月。T1、T3和T5每天一次,T2、T4和T6每天两次,水交换率为10%。溶解氧值在T2最高,其次是T4、T1、T6、T3和T5。T5处理的电导率、NH4-N、NO2-N、NO3-N、PO4-P和碳酸氢盐碱度最高,显著高于其他处理。在不同处理中,C.carpio的最终体重在4.01至8.22g之间。收获时,T2的体重增加幅度最大,依次为T4、T1、T6、T3和T5。鲤鱼的存活率在不同处理之间存在显著差异,从56.43%(T5)到96.32%(T2)。总重量超过5g的鱼的百分比和数量是根据研究结束时的大小频率分布估计的,T6组明显高于其他处理组(P<0.05)。根据目前的研究,每天20%的水交换量可以支持鲤鱼在水箱中更高的放养密度,并以可销售鱼类的数量衡量,从而提高生产力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of different water exchange regimes for optimizing growth and production of koi carp, Cyprinus carpio in tanks
The effect of different water exchange regimes on the growth and survival of koi carp, Cyprinus carpio in tanks provided with the supply of exogenous zooplankton as the food was investigated. Fish larvae (0.15±0.012g) were stocked in outdoor concrete tanks at 0.5 fish/l (T1 and T2); 1.0 fish/l (T3 and T4); and 1.5 fish/l (T5 and T6) and cultured for three months. The water exchange rate was 10% once daily in T1, T3 and T5 and twice daily in T2, T4 and T6. Values of dissolved oxygen were highest in T2, followed by T4, T1, T6, T3 and T5. The T5 treatment showed the highest concentrations of conductivity, NH 4 -N, NO 2 -N, NO 3 -N, PO 4 -P, and bicarbonate alkalinity, which were significantly higher than the other treatments. The final body weight of C. carpio ranged from 4.01 to 8.22g in the different treatments. At harvest, maximum weight gain was achieved in the T2, followed by T4, T1, T6, T3 and T5 in descending order. There was a significant difference in the survival of koi carp among the treatments, ranging from 56.43% (T5) to 96.32% (T2). The percentage and number of fish exceeding a total weight of 5g were estimated from the size-frequency distribution at the end of the study and was significantly higher in T6 ( P <0.05) than other treatments. From the present study, a daily water exchange of 20% could support higher stocking densities of koi carp in tanks and result in high productivity, measured in terms of the number of marketable fish.
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来源期刊
Iranian Journal of Ichthyology
Iranian Journal of Ichthyology Agricultural and Biological Sciences-Aquatic Science
CiteScore
0.70
自引率
0.00%
发文量
0
期刊介绍: Iranian Journal of Ichthyology (IJI) is a peer-reviewed journal for publication of high quality papers on any aspect of ichthyology and will be published 4 times a year by the Iranian Society of Ichthyology (http://www.isi-org.ir). The journal welcomes the submission of manuscripts that meets the general criteria of significance and scientific excellence, and will publish original scientific articles in the fields of ichthyology. The editors welcome the submission of original manuscripts including Research Articles, Short communications, and Views & News. Review papers by distinguished authors and Special Issues will also be considered. It is our aim to provide the international scientific community with an efficiently published journal, meeting high scientific and technical standards. Scopes of Iranian Journal of Ichthyology includes: Systematics, taxonomy, morphology, anatomy, biogeography, biodiversity, conservation, ecology and general biology of fishes (reproduction, food and feeding habits, age and growth, population dynamics, etc.). Papers on freshwater, brackish, marine and fossil fishes will be considered.
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