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Subject: Aquaculture × Author: Bisht, Diksha × End date: 2024 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Study of nutrient dynamics of water and growth parameters of Labeo rohita grown in aquaponic system with selected medicinal plants
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Bisht, Diksha; Tiwari, Hema
    The present research was done to study nutrient dynamics of water and growth parameters of Labeo rohita grown in aquaponic system with selected medicinal plants. The small plants, Tulsi (Ocimum tenuiflorum), Aloe vera and Mint (Mentha spicata) and fingerlings of Rohu (Labeo rohita) was collected from the hatchery of College of Fisheries, Pantnagar. Small plants of was grown in polyhouse in a FRP rectangular size trough of size of 176 × 44 × 17 cm. The trough was filled with stone gravels of size 8 – 20 mm. The average length and weight of rohu fingerlings were 6±1cm and 4±0.5g. The present study was carried out in rectangular cement tank filled with 8000 litre water and stocked with 400 numbers of fingerlings in each tank designated as T1 (Tulsi), T2 (Mint) and T3 (Aloe vera) respectively. A control without any plant but 400 rohu fingerlings was run simultaneously for comparison. Experiment was run with three replications for a duration of 6 months from October 2019 to march 2020. All water quality parameters were analysed weekly. Monthly sampling of length and weight of fishes was done. Initial and final biomassLwere taken at starting and ending point of an experiment. The fingerlings of different groups were fed with 1% respective medicinal plant extract incorporated floating commercial 28% protein based pelleted feed prepared by using different ingredients viz. groundnut oil cake, rice bran, maize, fish meal etc.. Every day 2.5% i.e 200L of water from fish tank removed and given to the plants in aquaponic unit. Approximately half an hour of time will be taken by each trough. The result of the present study showed that aquaponic system having integration with medicinal plants are capable of utilizing waste of one system for another biological system. Aquaponics with Aloe vera showed better growth of Rohu along with better productivity of Aloe vera as compared to other treatment tanks. Aquaponics with Tulsi showed better BCR as compared to other treatment tanks.