{"refrec":{"BRefID":64868,"RR":"<b>Suantika, G.; Dhert, P.; Sweetman, E.; O'Brien, E.; Sorgeloos, P.</b> (2003). Technical and economical feasibility of a rotifer recirculation system. <i>Aquaculture 227(1-4)</i>: 173-189. <a href=\"http://dx.doi.org/10.1016/s0044-8486(03)00502-7\" target=\"_blank\">dx.doi.org/10.1016/s0044-8486(03)00502-7</a>","BEntID":61349,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquaculture 227(1-4)</i>: 173-189. <a href=\"https://dx.doi.org/10.1016/s0044-8486(03)00502-7\" target=\"_blank\">https://dx.doi.org/10.1016/s0044-8486(03)00502-7</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Suantika, G.; Dhert, P.; Sweetman, E.; O'Brien, E.; Sorgeloos, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Suantika, G. <i>et al.</i>","Englishabstract":"A feasibility study was performed on the use of a recirculation system for the mass culturing of rotifers at industrial level. Rotifer culture systems with a culture volume of 750 l were operated at three different stocking densities (3000, 5000 and 7000 individuals ml<sup>-1</sup>) in a completely closed recirculation system. At all operating rotifer densities, a reliable production of 2.2 billion rotifers could be obtained on a daily basis during 3 weeks. Excellent water quality was maintained by the use of protein skimmers, the use of ozone and a submerged biofilter. The microbial counts remained stable during the whole culture period (10<sup>6</sup> CFU ml<sup>-1</sup> on marine agar and 10<sup>4</sup> CFU ml<sup>-1</sup> on TCBS after 15 and 23 days, respectively). No difference in HUFA and protein content were obtained between rotifers harvested from the recirculation system or from a conventional batch culture system. Compared to a commercial batch culture system, the use of a recirculation system can contribute to a 43% saving on the capital investment and the annual operation cost. By using this system, capital investment cost is considerably reduced by 46%. Savings are also made on labour cost (65%) and feed cost (21%) during a 1-year production. In general terms, it can be stated that by using a simple recirculation system, a cost-effective technology and a reliable rotifer culture can be obtained.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Technical and economical feasibility of a rotifer recirculation system","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Brachionus plicatilis; recirculation; rotifers; ozone; protein skimmer; operational cost","OtherDescriptors":"Brachionus plicatilis; Recirculation; Rotifers; Ozone; Protein skimmer; Operational cost","Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2012-04-02","DateCreate":"2004-08-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000186296600013","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/s0044-8486(03)00502-7"},"refs":null,"anarec":{"AnaID":64868,"PubliDate":2003,"Pagination":"173-189","XtraPublOfAnaID":null,"ISBN":null,"Volume":"227","Issue":"1-4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42190,"SerRR":"Aquaculture. 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