摘要
为了研究投喂两种不同饲料(冰鲜下杂鱼与配合饲料)对大口黑鲈养殖水质指标的影响,在室内水泥池进行了28d的饲养试验。对水体中的COD、PO4--P、TP、TN、NH3-N、NO3--N、NO2--N等指标进行了测定。结果表明,投喂两种饲料各指标均有不同程度的增加,但养殖一个月后冰鲜组比饲料组要高许多:杂鱼组COD、PO4--P、TP、TN、NH3-N、NO3--N、NO2--N分别为25.3mg/L、2.4mg/L、2.28mg/L、3.44mg/L、2.91mg/L、0.52mg/L、0.075mg/L,而配合饲料组分别为10.2mg/L、0.58mg/L、0.855mg/L、2.17mg/L、0.29mg/L、0.048mg/L、0.03mg/L。特别是PO4--P、TP,冰鲜组分别为饲料组的4.2倍和2.7倍。这说明投喂人工饲料可以减轻有机污染程度,特别是在控制PO4--P、TP的增加方面效果显著。试验结果对于控制水体的富营养化具有重要的指导意义。
A 28-day trial was conducted to study the effects of feeding iced trash fish and formulated feed food on the water quality in largemouth bass （Micropterus salmoides） aquarium. The COD, PO4^--P, TP, TN, NH3-N, NO3^--N and NO2^--N were determined respectively. The results showed that all the index were increasing with feeding the two kinds of feedfood, but feeding the trash fish was much higher than feeding the formulated feedfood. The COD, PO4^--P, TP, TN, NH3-N, NO3^--N and NO2^--N of feeding trash fish were 25.3mg/L, 2.4mg/L, 2.28mg/L, 3.d-4mg/L, 2.91mg/L, 0.52mg/L and 0.075mg/L, and feeding the formulated foodfeed were 10.2mg/L, 0.58mg/L, 0.855mg/L, 2.17mg/L, 0.29mg/L, 0.048mg/L and 0.03mg/L, respectively. Especially, for the content of TP and PO4^--P, the former were 4.2 and 2.7 times higher than the latter. These indicated that feeding formulated feed food could decrease the pollution of the cultured water, especially decreasing the discharge of the TP and PO4^--P could decrease was significant significantly. The conclusion of the study would give some guides to the study of management of water eutrophication in aquaculture.
出处
《水产学杂志》
CAS
2009年第1期35-37,46,共4页
Chinese Journal of Fisheries
基金
珠江水产研究所所长基金项目(2007-G-1)
广东省科技计划项目(2004B20301005)
国家科技基础平台建设子项目(2007DKA31800-03-06)
广东省科技兴渔重大项目((B200701A06)
国家863项目(2007AA10Z239)联合资助
关键词
下杂鱼
配合饲料
水质
影响
大口黑鲈
Effects
Iced trash fish
Formulated feedfood
Water quality
Largemouth bass（Micropterus salmoides）
