Optimum Stocking Density of Nursing Sex Reversal Nile Tilapia (Oreochromis niloticus) in Hapa with Aeration to Reach at Least 30 gram Size (Oreochromis niloticus) in Hapa with Aeration to Reach at Least 30 gram Size
Abstract
Optimum stocking density of nursing sex reversal Nile tilapia (Oreochromis niloticus) in hapa with aeration to reach at least 30 gram size was studied. Experiment was conducted by using 1-m3 hapa hung in 300-m2 earthen pond. Fives stocking densities of 100, 150, 200, 250 and 300 fish/m3, respectively were tested. Fish was fed with commercial feed to an apparent satiation by three times a day using 40%P feed for first 30 days and 30%P feed for last 30 days. Culture period made fish nursed with all stocking density reached average weight at least 30 grams, was shown as 60 days. Non – significant differences of final weight and length, also specific growth rate were observed between fish nursed with stocking densities of 100 and 150 fish/m3 (p>0.05), but higher than those of fish nursed with other stocking densities (p<0.01). Non-significant differences of survival rate and feed intake of fish nursed with all stocking density were observed (p>0.05). Nursing with stocking density of 100 fish/m3 made fish grew to at least 30 grams with the fastest times of 45 days and yielded higher percentage of at least 30 gram size than fish nursed with other stocking densities (p<0.01). Therefore, stocking density of 100 fish/m3 was optimum for nursing sex reversal Nile tilapia to reach at least 30 gram size in terms of saving time and productivity. Keywords : stocking density, sex reversal Nile tilapia, hapa, serationReferences
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Ronald, N., Gladys, B. & Gasper, E. (2014). The effects of stocking density on the growth and survival of Nile Tilapia (Oreochromis niloticus) fry at Son Fish Farm, Uganda. Journal of Aquaculture Research & Development, 5(2), 1-7.
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Thongma-eng, S. (2010). Management Information System for Fish Farm: A Case Study Thongma-eng Farm. Bangkok: Mahanakorn University of Technology. (in Thai)
Uddin, M.M., Islam, M.J. & Kunda, M. (2016). Development of value chain for sustainable quality tilapia (Oreochromis niloticus) seed production in cages and its distribution in the Haor Region of Bangladesh. International Journal of Natural Sciences, 6(1), 33-42.
Barreto, R.E. & Volpato, G.L. (2006). Stress responses of the fish Nile tilapia subjected to electroshock and social stressors. Brazilian Journal of Medical and Biological Research, 39(12), 1605-1612.
Boyd, C.E. (1990). Water Quality in Pond for Aquaculture. Alabama, USA: Alabama Agricultural Experiment Station, Auburn University.
Corrêa, S.A., Fernandes, M.O., Iseki, K.K. & Negrao, J..A. (2003). Effect of the establishment of dominance relationships on cortisol and other metabolic parameters in Nile tilapia (Oreochromis niloticus). Brazilian Journal of Medical and Biological Research, 36(12), 1725-1731.
Delicio, H.C., Luchiari, A.C., Barreto, R.E. & Marcondes, A.L. (2006). Testing time-place learning in the cichlid fish Nile tilapia. Journal of Ethology, 24(2), 195-200.
Duangsawasdi, M. & Somsiri, J. (1985). Water Quality and Analysis Method for Fisheries Research. Bangkok: National Inland Fisheries Institute, Department of Fisheries. (in Thai)
Ferdous, Z., Masum, M.A. & Ali, M.M. (2014). Influence of stocking density on growth performance and survival of monosex tilapia (Oreochromis niloticus) fry. International Journal of Fisheries and Aquaculture, 4(2), 99-103.
Inland Fisheries Research and Development Bereau. (2008). Knowledge Management of Breeding and Nursing Nile Tilapia. Bangkok: Department of Fisheries. (in Thai)
M’Balaka, M., Kassam, M.D. & Rusuwa, B. (2013). Effect of stocking density on the growth and survival of improved (F5 and F6) and unimproved native strains of Oreochromis shiranus (Trewavas) raised in hapas. Indian Journal of Fisheries, 60(2), 151-155.
Nash, R.D.M., Valencia, A.H. & Geffen, A.J. (2006). The origin of Fulton ,s condition factor setting the record straight. Fisheries, 31(5), 236-238.
Nhoorit, K. (2014). Production situation and trades on Nile tilapia and its product in 2013 and trend in 2014. In Workshop of Development Strategy on Nile Tilapia Year 2015-2019. Petchburi: Petch Cha-am Resort. (in Thai)
Palad-im, J. & Kraisurasre, A. (2008). Effect of Aeration and Stocking Density on Growth and Survival Rate of Male Sex Reverse Tilapia (Oreochromis niloticus, Linn). Bangkok: Inland Fisheries Research and Development Bereau. (in Thai)
Ronald, N., Gladys, B. & Gasper, E. (2014). The effects of stocking density on the growth and survival of Nile Tilapia (Oreochromis niloticus) fry at Son Fish Farm, Uganda. Journal of Aquaculture Research & Development, 5(2), 1-7.
Sanudi, F., Jere, B., Mzengereza, K. & Chirwa, B.B. (2015). Effect of stocking density and feed on growth of improved (F5) mono-sex Oreochromis shiranus reared in tanks. Journal of Fisheries & Livestock Production, 3(4), 1-5.
Thongma-eng, S. (2010). Management Information System for Fish Farm: A Case Study Thongma-eng Farm. Bangkok: Mahanakorn University of Technology. (in Thai)
Uddin, M.M., Islam, M.J. & Kunda, M. (2016). Development of value chain for sustainable quality tilapia (Oreochromis niloticus) seed production in cages and its distribution in the Haor Region of Bangladesh. International Journal of Natural Sciences, 6(1), 33-42.
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2019-09-13
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