1. 中国海洋大学 化学化工学院, 山东 青岛 266100;2. 农业部海洋渔业资源可持续利用重点开放实验室, 中国水产科学研究院 黄海水产研究所, 山东 青岛 266071
王威(1986), 男, 硕士研究生, 研究方向为海洋渔业环境污染与修复. E-mail: wangwei19861087@163.com
S917
国家科技支撑计划项目(2011BAD13B04).
1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;2. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;3. Laizhou Mingbo Fisheries Limited Company, Yantai 2
对陶环、弹性毛刷和爆炸棉Sparus macrocephalus)陶环生物滤器、弹性毛刷生物滤器和爆炸棉生物滤器的生物膜成熟时间分别为和的饲喂实验组鱼血清溶菌酶(T-SOD)实验组鱼体消化道内菌群数量及其多样性要明显高于对照组。结果表明; 循环水系统养殖模式不仅可以提高鱼体的生长速度
Within recirculating aquaculture systems (RAS), the bio-filter plays a critical role by removing dissolved inorganic nitrogen, intercepting suspended matter, and constantly recycling the culture water. The nitrifying performance of the bio-filter is heavily influenced by bio-fillers and as such the optimal method for removal of deleterious substances remains a focus of research. Microbial water purified agents are often used as a water amendment in artificial culture systems. Their use is thought to promote water purification and disease prevention in fishes, though few studies have evaluated the use of microbial water purified agents as strains for bio-film cultivation. RAS allows high culture density and rapid growth of cultured species, though compared with the traditional flowing water culture, little is known about the effect of fish culture in RAS. We evaluated bio-film cultivation and the dissolved inorganic nitrogen removing efficiency of three kinds of bio- young black sea bream, We tested the effect of using agents as a strain for (pottery ring, elastic brush, and biochemical cotton fiber) during bio-film maturation time for the three was 25, 32, and 28 d, respectively. Our results suggested that maintaining high dissolved oxygen concentrations, changing the water, and adding nutrients and NaCO3 promoted the growth and propagation of nitrifying bacteria. Conversely, NO2-N concentrations cannot be held at high levels for an extended period because ammonia-oxidizing bacteria and nitrifying bacteria require dissolved oxygen and alkalinity for survival. grew well in the simple recirculating aquaculture systembody weight and feed conversion rate of in the three experimental groups differed significantly from that in the control group (<0.05).The survival rates in all groups were >95%. The activity of serum LSZ and liver SOD was significantly higher in the experimental groups than the control group (<0.05). Similarly, the quantity and diversity of digestive tract flora was significantly higher in the experimental groups than the control group. different kinds of beneficial bacteria in the three experimental groups, relative to the control. Our results suggest that these beneficial bacteria are dominant, and thus inhibited the survival of pathogenic bacteria. During circulation of the water, the beneficial bacteria are able to enter the fish body during respiration and ingestion, thereby enhancing the nonspecific immunity of the fish. Our results suggest that different filter materials have different bio-film maturation times under the same operating conditions. A recirculating aquaculture system can not only improve fish growth, but also enhance their
王威,曲克明,朱建新,王海增,崔正国,夏斌.3种滤料生物滤器的挂膜与黑鲷幼鱼循环水养殖效果[J].中国水产科学,2012,19(5):833-840
WANG Wei, QU Keming, ZHU Jianxin, WANG Haizeng, CUI Zhengguo, XIA Bin. Biofilm cultivation with three stuffings and their effect on the growth of young black sea bream, Sparus macrocephalus [J]. Journal of Fishery Sciences of China,2012,19(5):833-840
