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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (603) Last page : (610)
Article doi: : http://dx.doi.org/10.18782/2320-6985

Comparative Study on Growth Performance and Economics between GIFT and Local Varieties of Oreochromis niloticus (Linnaeus, 1758)
Reared in Pond Culture Systems

Uday Narayan Das¹*, Prasanta Jana², Triparna Pahari³, Amitava Roy⁴ and Kishore Dhara⁵

¹Office of the Assistant Director of Fisheries, Murshidabad, Meen Bhaban, Berhampur,
Murshidabad, West Bengal 742 101
²Fish Nutrition, Biochemistry and Physiology Division, ICAR-Central Institute of Fisheries Education,
Versova, Mumbai- 400 061
³Fish Genetics and Biotechnology Division, ICAR-Central Institute of Fisheries Education,
Versova, Mumbai- 400 061
⁴Subject Matter Specialist (Animal Science), Krishi Vigyan Kendra, Murshidabad, West Bengal
⁵Office of the Deputy Director of Fisheries, Murshidabad, Meen Bhaban,
Berhampur, Murshidabad, West Bengal 742 101
*Corresponding Author E-mail: undas.245@gmail.com
Received: 1.08.2018 | Revised: 29.08.2018 | Accepted: 6.09.2018  

 ABSTRACT

A comparative study was conducted for the experimental period of 100 days to investigate the suitability of GIFT variety of Oreochromis niloticus (Linnaeus, 1758) over its local variety in pond culture systems. After the conventional method of fertilization in the ponds, experimental fishes were stocked @ 125 nos m-3 and fed with locally available commercial floating feed with 30% crude protein. Feeding rate was adjusted @ 5% of the body weight for the initial 30 days and later reduced to 2% for the remaining experimental period. Sampling was done on 25 days interval to measure the length and weight of the experimental fishes. The length-weight relationship (LWR) and condition factor (K) were assessed to determine the growth pattern and general well being of the fishes. The regression coefficient b (2.914 and 2.970) indicates the allometric growth of both the varieties during the experimental period. No significant difference (P>0.05) was found between calculated K values for both the varieties on different sampling days (25, 50, 75 and 100 days). The survival rate did not differ significantly (P>0.05) among the two varieties during the experimental period. But interestingly at the end of the experimental period of 100 days, GIFT variety attained significantly (P<0.05) higher mean body length and weight of 27.341±0.381 cm and 413.636±16.032 gm over the local variety (21.819±0.207 cm and 208.571±6.171 gm respectively). The comparative economic analysis also suggests better profitability of GIFT variety of O. niloticus than the local variety. These results clearly suggest that the culture GIFT variety of O. niloticus will provide economic benefit as well as quality protein to the fish farmers.

Key words: Oreochromis niloticus, Length-weight relationship, Condition factor, Survival, Growth, economic benefit.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Das, U.N., Jana, P., Pahari, T., Roy, A. and Dhara, K., Comparative Study on Growth Performance and Economics Between GIFT and Local Varieties of Oreochromis niloticus (Linnaeus, 1758) Reared in Pond Culture Systems, Int. J. Pure App. Biosci.6(5): 603-610 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6985