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dc.contributor.author Rai, Sunila en_US
dc.contributor.author Yi, Yang en_US
dc.date.accessioned 2012-10-15T23:33:21Z
dc.date.available 2012-10-15T23:33:21Z
dc.date.issued 2012 en_US
dc.identifier.issn 0792-156X en_US
dc.identifier.other IJA_64.2012.818
dc.identifier.uri http://hdl.handle.net/10524/31835
dc.description.abstract The nibbling frequency of five carp species (rohu Labeo rohita, mrigal Cirrhinus mrigala, catla Catla catla, common carp Cyprinus carpio, silver carp Hypophthalmichthys molitrix) on bamboo lateral sticks (kanchi) colonized by periphyton was examined in fed and unfed systems. There were three treatments: (a) no carp and no supplemental feed (control), (b) carp without supplemental feeding (unfed treatment), and (c) carp with supplemental feeding (fed treatment). For 12 h (07:30-19:30) during six days, nibbling behavior was observed in real time via a digital video camera and recorded on a camcorder for later viewing. Rohu, catla, and common carp nibbled on the kanchi, while mrigal and silver carp did not. In rohu and catla, the nibbling frequency was significantly higher in the unfed treatment than in the fed treatment (p<0.05); supplemental feeding reduced nibbling frequency by 81% and 91%, respectively. Hence, in periphyton-based aquaculture systems, there is no need for a high density of substrates in ponds that receive supplemental feed. Alternatively, the amount of supplied feed can be reduced to force these species to consume more periphyton. en_US
dc.format.extent 5 pages en_US
dc.relation.ispartofseries The Israeli Journal of Aquaculture - Bamidgeh en_US
dc.subject carps en_US
dc.subject bamboo stick en_US
dc.subject nibbling en_US
dc.subject supplemental feed en_US
dc.subject periphyton-based polyculture en_US
dc.subject.lcsh Fish culture--Israel. en_US
dc.subject.lcsh Fish culture. en_US
dc.title Nibbling Frequency of Carps in Periphyton-Based Aquaculture Systems with and without Supplemental Feed en_US

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