Nibbling Frequency of Carps in Periphyton-Based Aquaculture Systems with and without Supplemental Feed

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dc.contributor.authorRai, Sunila
dc.contributor.authorYi, Yang
dc.date.accessioned2012-10-15T23:33:21Z
dc.date.available2012-10-15T23:33:21Z
dc.date.issued2012
dc.description.abstractThe 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.
dc.format.extent5 pages
dc.identifier.issn0792-156X
dc.identifier.otherIJA_64.2012.818
dc.identifier.urihttp://hdl.handle.net/10524/31835
dc.relation.ispartofseriesThe Israeli Journal of Aquaculture - Bamidgeh
dc.subjectcarps
dc.subjectbamboo stick
dc.subjectnibbling
dc.subjectsupplemental feed
dc.subjectperiphyton-based polyculture
dc.subject.lcshFish culture--Israel.
dc.subject.lcshFish culture.
dc.titleNibbling Frequency of Carps in Periphyton-Based Aquaculture Systems with and without Supplemental Feed

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Volume 64, 2012