为探讨在观赏池塘中的投放浮游动物以及直接投放动物粪便对锦鲤（Cyprinus carpio L.）的生长及产量的影响，在池塘中进行了为期11周的实验。实验按如下四种管理系统进行处理：1.给幼体锦鲤投喂浮游动物饲料(LF组)；2.直接投放家禽粪便(PM组)；3.直接投放牛粪(CD组)；4.不投放任何食物，仅进行常规管理(C组) 。每组实验重复三次。同时检测非自养细菌及致病微生物(如: Aeromonas sp. 和 Pseudomonas sp.)的生长状况，以此了解池塘的管理状况。在LF组中，其水体含氧量较高，与其它组相比具显著差异(P<0.05)。而PM 、 CD组与LF、C组比较，在PO4 – P, NH4 – N, NO3 – N, NO2 – N的关系, 导电率、碱度以及生化需氧量等较高，且差异显著(P<0.05)，在池塘底部淤泥中的总氮量及有机碳百分率方面PM、CD与LF组相比，具有显著差异（P <0.05）。PM与CD 组与其它组相比在池塘中的非自养细菌（Aeromonas sp.和Pseudomonas sp.）的繁殖率较高，皆具显著差异P<0.05)。LF组中锦鲤的体重增长率较其它组高（P<0.05)。锦鲤幼体在C及LF组中的成活率分别为: 67.21% 和90.11%。结果提示：提高锦鲤幼体的存活率及其产量可通过对水质的管理(即保持优良水质)及提高池塘中浮游生物丰富度加以获得。值得注意的是：LF组中非自养细菌（Aeromonas sp. 与 Pseudomonas sp.）比率的过低将导致细菌性疾病的发生。
To test the effectiveness of introducing live zooplankton against direct manuring in ornamental fish ponds upon their survival and production, larvae of koi carp, Cyprinus carpio L., were cultured for 11 weeks in earthen ponds maintained according to four management regimes: (1) live zooplankton fed to carp larvae (LF); (2) direct fertilization with poultry manure (PM); (3) direct fertilization with cowdung (CD); and (4) a control treatment (C). There were three replicates for each treatment. The growth of heterotrophic bacteria and pathogenic microorganisms like Aeromonas sp. and Pseudomonas sp. were also examined in response to pond management. Values of dissolved oxygen were significantly higher (P<0.05) in the water of LF ponds, compared to other treatments, while the PM and CD treatments recorded were significantly higher (P<0.05) values of PO4 – P, NH4 – N, NO3 – N, NO2 – N, specific conductivity, alkalinity, and BOD, compared to the LF and C treatments. The percentages of organic carbon and total nitrogen in the bottom sediments were higher in the PM and CD treatments compared to LF (P<0.05). Average counts of heterotrophic bacteria in the water of PM and CD ponds were significantly higher than other treatments (P<0.05). The development of Aeromonas sp. and Pseudomonas sp. were significantly higher (P<0.05) in the PM and CD treatments. Weight gain of koi carp stocked in LF was significantly higher (P<0.05) than that of fish in the other treatments. There was a significant difference in the survival rate of koi carp among the treatments ranging from 67.21% in C to 90.11% in LF. The results suggest that raising koi carp larvae in ponds and feeding them exogenously with zooplankton would support high rates of survival and production through maintenance of better water quality and greater abundance of zooplankton in the system. Significantly lower abundance of Aeromonas sp. and Pseudomonas sp. in the LF treatment considerably lowered any possibility of occurrence of bacterial disease.