Indian Journal of Science and Technology
Year: 2021, Volume: 14, Issue: 12, Pages: 990-998
G Rajaprabhu1,2*, R Kirubagaran1*, J Santhanakumar1, R Sendhil Kumar3, G Dharani1
1Marine Biotechnology Division, National Institute of Ocean Technology, Pallikaranai,
Chennai, 600100, Tamilnadu, India. Tel.: 9865990117
2Sathyabama Institute of Science and Technology, Jeppiaar Nagar, Rajiv Gandhi Salai,
Chennai, 600119, Tamil Nadu, India
3Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, (Govt. of India),
Puthuvype, Kochi, 682508
Received Date:10 March 2021, Accepted Date:31 March 2021, Published Date:13 April 2021
Objectives: The main objective of the study was to collect and rear the unmarketable, small sized S.javus which is mostly rejected by the traditional fisherman. During fishing activities, under sized S.javus ranging in sizes from 25 to 40 kg (< 30-40 % of total catch/day) is being captured. Due to very low marketable value these small fishes (<250 g) get rejected. Therefore, we utilized this as an economically viable option for utilization as seeds for rearing until they reach the necessary marketable size. Methods: Undersized juveniles (12-16 cm, 40 -55 g) were collected from nearby Olaikuda village,Rameshwaram using traditional traps made using bamboo and odai tree bark (Acacia planifrons). The collected juveniles were stocked in sea cages and fed with locally formulated plant based feed containing 28-32 % crude protein. Findings: Harvesting was successfully done after 140 days with 90 % survival. The average growth rate achieved was 2.5 g /day with FCR of 2.01. This resulted in an average harvest size of 400 g/fish from its initial stoking size of 50 g with an attracted market value of Rs. 150/kg. Novelty: Till date, no attempts were made to commercialize such harvesting techniques for the species Siganus javus in pilot scale in India (Except James, 1984).
Keywords: Rabbit fish; Siganus javus; sea cage culture; rabbit fish culture; Siganidae
© 2021 Rajaprabhu et al.This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
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