论文部分内容阅读
根据多营养层次综合养殖原理,2011年4月16日至11月15日在面积33.3km~2,水深2.5m,盐度0.5~0.7,碳酸盐碱度2.5~2.7mmol·L~(-1)池塘中,研究三种不同混养模式下异育银鲫Carassius auratus gibelio存活、生长、免疫相关酶活及水质变化:模式A主养鲫,混养鲢Hypophthalmichthys molitrix和鳙Aristichthys nobilis;模式B主养鲫和鳊Parabramis pekinensis,混养鲢和鳙;模式C主养鲫和草鱼Ctenopharyngodon idella,混养鲢和鳙,为探索异育银鲫池塘生态高效养殖提供参考。养殖期间,每月定期监测池塘的水质,养殖结束后称量鲫的体质量,统计产量,计算存活率,并检测血清和肝胰脏中的过氧化物酶(POD)和超氧化物歧化酶(SOD)活力。结果显示:模式C的p H在养殖前期要高于模式A和模式B,但氨氮、亚氮、活性磷、叶绿素a大部分时间内要显著低于后两者;模式A和模式B的水质变化趋势基本相同。模式A和模式C鲫平均体质量分别达(508.5±26.5)和(516.5±35.0)g,显著高于模式B的(473.0±31.5)g;三者间存活率存在显著差异,模式A最高(95.14±1.47%),模式C最低(86.28±2.16%);模式A血清和肝胰脏中的SOD显著高于模式B和C;模式A血清中的POD水平也很高,与模式B无显著差异,但显著高于模式C。结论:模式A中的鲫生长速度更快,存活率更高,抗氧化能力更强,模式A相较于模式B和C鲫养殖效果更佳。
According to the principle of multi-nutrition integrated aquaculture, the area of 33.3km ~ 2, depth of 2.5m, salinity of 0.5 ~ 0.7, carbonate alkalinity of 2.5 ~ 2.7mmol·L ~ (- 1) In the ponds, the survival, growth, immune-related enzyme activities and water quality of Carassius auratus gibelio were studied under three different polyculture modes: model A main carp, polyculture silver carp, Hypophthalmichthys molitrix, and Aristichthys nobilis; Main cultured crucian carp and parabramis pekinensis, polyculture silver carp and bighead carp; Model C main carp and grass carp Ctenopharyngodon idella, polyculture silver carp and bighead carp, in order to explore allogynogenetic crucian carp pond ecological efficient culture provide reference. During the breeding period, the water quality of the pond was monitored monthly, the body weight of the crucian carp was measured after the cultivation, the output was calculated and the survival rate was calculated. Peroxidase (POD) and superoxide dismutase (SOD) activity. The results showed that p H of model C was higher than that of model A and B at the early stage of culture, but ammonia nitrogen, nitrite, active phosphorus and chlorophyll a were significantly lower than those of the latter two most of the time. The water quality of model A and model B The trend is basically the same. The average body weight of model A and model C crucian carp were (508.5 ± 26.5) and (516.5 ± 35.0) g, respectively, which were significantly higher than those of model B (473.0 ± 31.5) g. There were significant differences among the three groups 95.14 ± 1.47%), the lowest in model C (86.28 ± 2.16%); SOD in model A serum and hepatopancreas was significantly higher than that in models B and C; POD level in model A serum was also high, which was not significantly different from model B Differences, but significantly higher than the model C. CONCLUSION: Carassius carp grew faster and had higher survival rate and antioxidant capacity in model A. The results showed that model A was better than model B and C in breeding.