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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(4): 1784-1791
DOI: https://doi.org/10.20546/ijcmas.2020.904.209


Influence of Water Alkalinity in Production of Stunted Fingerlings of Catla catla (Hamilton)
P. R. Sahoo1*, P. C. Das1, S. Nanda2, K. N. Mohanta1, B. Sahu2, G. C. Kundand S. Tanuja3
1ICAR-Central Institute of Freshwater Aquaculture, Bhubaneswar - 751 002 Odisha, India
2College of Fisheries, Orissa University of Agriculture and Technology,
Rangailunda, Berhampur-760007, Odisha, India
3ICAR-Central Institute for Women in Agriculture, Plot No. 50-51, Mouza - Jokalandi, P.O. - Baramunda, Bhubaneswar-751003, Odisha, India
*Corresponding author
Abstract:

Study was conducted for 90 days to know the effect of varying water alkalinity in production of stunted fingerlings of Catla catla in outdoor FRP tanks (1000 litre). Tanks filled up to 800 litre marks were grouped into three triplicated treatments and were stocked with catla seed (3.9g, 67±0.27mm) at 16nos per tank (20m-3). Three alkalinity levels, i.e. 80, 150 and 200 mg CaCO3L-1 were used and designated as Control, T-1 and T-2, respectively. Pond water (80 mgL-1) and bore well water (360 mgL-1) were used as the two sources to get the desired alkalinity level. Fishes were fed with powdered feed @ 8% of their respective biomass in all the treatments. The survival of catla decreased significantly (p<0.05) with the increase in alkalinity from control (97.92±3.61%) to T2 (89.58±3.61%). The average harvested body weight and length in T-1 (8.83±0.40g, 8.73±0.17cm) and T-2(8.28±0.19g, 8.65±0.10cm) were similar (p>0.05), but both were significantly lower than the control (9.64±0.12g, 9.02±0.02cm). Similarly, specific growth rate of T1 (0.91±0.05) and T2 (0.84±0.03) were similar and significantly lower than control (1.01±0.01). The biomass yield also reduced significantly with increase in alkalinity from control (151.00±4.63g) followed by T1 (132.43±6.06g) and T2 (118.77±7.56g). Such results indicated pronounced effect of increased alkalinity on suppressing fish growth and suggested possibility of manipulating this parameter as a tool for stunting of catla seed.


Keywords: Catla catla, Stunting, Alkalinity, Water quality, Seed rearing
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How to cite this article:

Sahoo, P. R., P. C. Das, S. Nanda, K. N. Mohanta, B. Sahu, G. C. Kund and Tanuja, S. 2020. Influence of Water Alkalinity in Production of Stunted Fingerlings of Catla catla (Hamilton).Int.J.Curr.Microbiol.App.Sci. 9(4): 1784-1791. doi: https://doi.org/10.20546/ijcmas.2020.904.209