{"id":14687,"date":"2018-12-28T19:05:54","date_gmt":"2018-12-28T17:05:54","guid":{"rendered":"http:\/\/fishconsult.org\/?p=14687"},"modified":"2020-02-07T17:07:45","modified_gmt":"2020-02-07T15:07:45","slug":"in-pond-raceway-aquaculture-technology-description-and-applications","status":"publish","type":"post","link":"https:\/\/fishconsult.org\/?p=14687","title":{"rendered":"In-pond raceway aquaculture technology (Description and applications) – Video"},"content":{"rendered":"\n

Video credit<\/strong>: Marx Perfecto C. Garcia (Philippines)<\/p>\n\n\n\n

Description<\/strong>: Abdel Rahman El Gamal (Founder of the video channel) <\/p>\n\n\n\n

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Historic information<\/strong>: As\nreported, the \u201cIn-pond raceway technology – IPR\u201d was first developed in 2007 on\na channel catfish farm in West Alabama, USA. Afterwards, the technology was transferred\nto China in 2013 and then after to more Asian countries including Vietnam, and\nIndia). Currently, the technology has been introduced to more countries\naround the global.  <\/p>\n\n\n\n

System description:<\/strong>\nThe system relies on the creation of water circulation within the raceway units\nlocated in earthen ponds as well as on the removal of the organic wastes. The\nwater circulation is done using paddlewheel aerators and\/or air blowers. The use\nof low speed paddlewheels provides a constant water current through the\nraceways. The aerators should be of capacity sufficient to create water\nflow of enough volume with particular velocity in the raceway cells which\nultimately determines the frequency of water renewal within the raceway that in\nturn is a function of several parameters including the species, stocking\ndensity, and fish biomass.<\/p>\n\n\n\n

This video was filmed in the Freshwater\nFisheries Research Center (FFRC), Wuxi, China.<\/p>\n\n\n\n

In regard to the\nwaste removal, the water and sludge are moved from the raceways into a waste-settling zone in the open\npond from where the water is filtered before re-circulation, while the\norganic wastes are periodically collected using mechanical collectors. The\norganic waste products in the open pond are carried into the open pond area\nwhere they are processed naturally and in the same time stimulate the growth of\nnatural organisms that in-turn become a good food for other fish species\nespecially in the open pond.<\/p>\n\n\n\n

Typically,the raceways are constructed in parallel in a chosen corner of a\ntraditional earthen pond with a center baffle to provide for a continuous\ncirculation pattern around the pond and through the raceways. <\/p>\n\n\n\n

Applications:<\/strong>\nThe application of the IPR technology has been promoted as a means to enhance\naquaculture production of good quality fish and in the same time achieve a best\nutilization of water resources. That is why the technology has been encouraged in\nsituations of water scarcity or high cost of natural resources such as land and\nwater especially when the intensification of farming practices is targeted.<\/p>\n\n\n\n

Several species have been grown\nin the IPR systems including and not limited to carps, channel catfish, paddlefish\nand others. Because of the cost involved in the establishment and operation of\nthis system, high market value fish are often targeted.<\/p>\n\n\n\n

Advantages:<\/strong> The\nIPR as mentioned ultimately targets higher production of high quality fishery\nproducts that result from healthy environment that ensures higher growth rate\nand survival, efficient feed conversion ratio and other productive traits.<\/p>\n\n\n\n

Depending on the overall conditions\nand practices, the increase of the system productivity has varied significantly\nand ranged from as low as low as 50% to as high as 300%. Moreover, the\nenvironmentally nature of the system, the no water discharge from production\nponds to outside eliminates the possible negative impacts to the environment.\nThe sustainable utilization of water resources is considered a key advantage\nfor the IPR system especially when compared to the traditional raceway system\ndepends on high-flow rate of incoming water with no reuse of discharged water.\n \n\nThe choice of the\nraceway fish and the co-cultured species would vary depending on the production\ntarget. An example for that is culture of channel catfish (Ictalurus punctatus<\/em>) in the raceway\nfacility, while the paddlefish (Polyodon\nspathula<\/em>) is\ngrown as a co-cultured species in the open pond. In a production arrangement as\nsuch, the main cultured species which is channel catfish enjoys the best water\nquality in the raceway. Also, the open pond system provides a safe and\nstress-free environment to the paddlefish (co-cultured species).\n\n\n\n<\/p>\n\n\n\n

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