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Researcher Suman, A. K.
Advisor Ojha, M. L.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher MPUAT
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies
Subject Keyword Selected ♦ Abiotic Factors ♦ Fish Growth ♦ Micro-water ♦ Sheds ♦ Effect of Selected Abiotic Factors On Fish Growth In Micro-water Sheds of Southern Rajasthan ♦ Aquaculture
Abstract The present study has been conducted to investigate the “Effect of selected abiotic factors on fish growth in micro-water sheds of Southern Rajasthan from January 2016 to June 2016†. A total of 12 physico-chemical and one biological parameters (Primary productivity) were analysed to assess the potential effect on fish growth. The average water quality parameters of all the selected micro-watersheds were fluctuated between, (Water temperature 26.35 – 32.95°C), (pH 7.7 – 10.6), (DO 6.50 – 11.52 mg/l), (Salinity 0 – 0.5 ppt), (Free CO2 11 - 15 mg/l), (TDS 109.05 – 479 mg/l), (Conductivity 248 – 970 ms/cm), (Nitrate-nitrogen 0.111 – 0.36 mg/l), (Orthophosphate 0.05 – 0.5mg/l) and (Ammonia 0 – 1.845 mg/l). The average primary productivity fluctuated between (GPP 0.07 – 0.99 gC/m3/h), (NPP 0.0.1 – 0.59 gC/m3/h) and (RQ 0.2 – 0.77 gC/m3/h). Water quality parameters viz., water temperature, pH, dissolved oxygen, free carbon dioxide, Total alkalinity, EC, TDS, orthophosphate and nitrate-nitrogen indicated that the water of selected micro-water sheds were congenial and moderately productive from the fisheries point of view. The physico-chemical and primary productivity revealed a significant impact on fish growth parameters such as gain weight, length gain and SGR. Comparatively higher net weight, net length and SGR were recorded for Catla (1167.1gm) followed by than rohu (1103.3 g) and Mrigala (391.27gm). The specific growth rate of catla was (2.19 %) in Sonariya followed by Valota (2.16). The lower SGR was noticed in Kalighati (1.89 %) followed by Jogiwada (1.83 %). Based on the results of the physico-chemical and biological parameters in water, it is evident that all the selected micro-water sheds are suitable for fish growth except, a few micro-watersheds (i.e. Ghumania-Ka- Naka, Hariyala, Nagela, Kundi-Ka-Naka, Nareli, Gorcha, Kalighati, Bhanvar semla, Sonariya and Pagara) in which pH level is very high. This high level of pH is unfavorable for fish growth, which need to be corrected with the use of chemicals and more suitably by the use of organic fertilizer. But, there should be a constant monitoring of the physical and chemical parameters in water of all selected micro-water sheds in the future for better growth of fish.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Udaipur
Size (in Bytes) 4.00 MB
Page Count 83