REARING OF CARRIED OVER CARP SEED IN PEN ENCLOSURE IN A CLOSED FLOODPLAIN WETLAND OF ASSAM
170 / 11
Authors
-
B. K. BHATTACHARJYA
-
SONA YENGKOKPAM
-
PRANAB GOGOI
-
K. K. SARMA
-
DIPESH DEBNATH
Abstract
Results of a pen aquaculture experiment carried out during 2009 for rearing carp fingerlings in Damal beel, (a closed type floodplain wetland), Morigaon district, Assam are described. A rectangular pen of 741 m2 constructed using netlined split-bamboo screens was stocked with carried over fingerlings of Indian major and exotic carps @ 5 No. m-2. Average stocking size were 14.2 cm/ 41.9 g for Catla catla, 9. 6 cm/ 19.3 g for Labeo rohita, 10.2 cm/ 9.4 g forCirrhinus mrigala, 15.3 cm/ 45.7 g for Ctenopharyngodon idella and 17.2 cm/ 46.0 g for Hypophthalmichthys molitrix. Stocked fishes were fed with rice polish and mustard oil cake mixture (1:1) fortified with vitamin-mineral premix (1%) @ 5% of body weight. Water in the pen was characterized by favourable temperatures (23.0-33.9 oC), clear water (Secchi disc visibility 48-50 cm), alkaline pH (7.1-8.2), optimal dissolved oxygen (7.0-7.5 mg l-1), undetectable free carbon dioxide and moderate total alkalinity (22-23 mg l-1). Seed were reared for 70 days before releasing them in the beel. Highest specific growth rate was observed in silver carp (2.40) followed by mrigal (2.11), grass carp (1.51), rohu (1.43) whereas catla recorded the lowest rate (0.80). Estimated fish production in the pen was 1529 kg ha-1 in 70 days. The benefit-cost ratio was 1.8 showing that rearing carried over carp seed in the pen was economically viable.
Key words: Pen aquaculture, floodplain wetland, Damal beel, Assam, exotic carps.
References
APHA; AWWA and WPCF, 1992. Standard Methods for the examination of water and wastewater by Lenore S. Clesceri, Arnold E.Greenberg and R. Rhodes Trussell (eds.), 17th edition, American Public Health Association, Washington, DC.
REARING OF CARRIED OVER CARP SEEDAyyappan, S., 2005. Indian fisheries and aquaculture: present status and future prospects. http:// www.nutritionfoundationofindia.
Bhattacharjya, B. K. 2011. Management guidelines for floodplain wetlands of Northeast India, pp 1-11. In Gogoi,
A. K., Bhattacharjya, B. K., Singha, A. K., Debnath, D. and Yengkokpam, S. (eds), Training manual on recent advances in management of fisheries and aquaculture in Northeast region of India. Zonal Project Directorate, Zone-III, ICAR Research Complex for NEH Region, Barapani, Meghalaya, India.
Bhattacharjya, B. K., 2003. 'Bilor Abestoneet Meen Palon' (Pen culture in beels - in Assamese). Bull. 116, CIFRI, Barrackpore, W. B., 33 p.
Bhaumik, U., Nath, D., Saha, S., Mitra, A. and Bandopadhyay S., 2000. Demonstration of pen culture technology, Annual report 1999-2000, pp. 57-58.
CentralInland Fisheries Research Institute, Barrackpore.
Boyd, C. E., 1982. Water Quality Management for Pond Fish Culture. Elsevier Sci. Publ. Co., Amsterdum, 318 pp.
Giresha, O., Basavaraju, N., Tyagi, A. C. and Shanmukha, S. N., 2003. Carrying capacity models and environmental impact. FAO Fisheries Technical Paper 255, Rome, p. 131.
Gorai, B. K., Sugunan, V.V. and Jha, B. C., 2006. Raising of stocking materials of Indian major carps in pen enclosures in selected floodplain wetlands of Assam, India. Asian Fisheries Science 19: 185-197.
Mathew, A. 1990. Pen nursery technology for the development of fisheries of ox-bow lakes and reservoirs. In Jhingran, A. G. and Unnithan, V. K. (eds) Contribution to the fisheries of Inland open water systems in India, pp. 89-91.
Inland Fisheries Society of India Publication, Barrackpore, India. Sugunan, V. V., Vinci, G. K., Bhattacharjya, B. K., Hassan, M. A. 2000. Ecology and Fisheries of Beels in West
Bengal. Bull. 103, Central Inland Fisheries Research Institute, Barrackpore. Sugunan, V.V. and Bhattacharjya, B.K., 2000. Ecology and Fisheries of Beels in Assam. Bull. 104, Central Inland Capture Fisheries Research Institute, Barrackpore, pp.
Sugunan, V.V., 1995. Reservoir Fisheries in India. FAO Fisheries technical Paper No. 345, Rome: Food and Agriculture Organization, p. 423. 438
Downloads
Submitted
Published
Issue
Section
License
In case of publication of the article in the journal, author(s) are required to assign copyright to the Journal of the Inland Fisheries Society of India for its publication in any form/language including all media (print and electronic, or presently unknown), and exclusive right to use the matter for the life of the work (no time restriction on re use of matter).