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Subject: Aquaculture × Author: Nazir, Iqra × End date: 2022 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Evaluation of dietary utilization of different phytobiotics along with vitamin C and chitosan on growth and immune response in Cyprinus carpio haematopterus
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-08) Nazir, Iqra; Chauhan, R.S.
    The present study was carried out to evaluate growth promoting, antimicrobial and immunostimulatory effect of Allium sativum, Curcuma longa, Tinospora cordifolia, Withania somnifera, vitamin C and chitosan on the fingerlings of Cyprinus carpio haematopterus. The fingerlings weighing 30.0 ± 2 g were distributed randomly into four treatment groups T0, T1, T2 and T3 of 25 fishes each in triplicate. Four isoproteinous experimental diets were prepared by mixing rice bran, deoiled mustard oil cake, deoiled soybean cake and vitamin-mineral mixture. The phytobiotics, Vitamin C and Chitosan were incorporated into diet. Diet D1 contained control feed + 2.5 g of garlic + 2.5 g of giloy+ 2.5 g of turmeric +2.5 g of ashwagandha per kg feed. The diet D2 had control feed + (2.5 g of each plant) + 25 mg Vitamin C per kg feed. The diet D3 contained control feed + (2.5 g of each plant) + 2.5 g Chitosan per kg feed. T0 group fishes were fed with D0 diet, T1 with D1, T2 with D2 and T3 with D3 @ 5% body weight per day for 122 days. The antibacterial activity of the crude extracts of garlic, giloy, ashwagandha and turmeric against the Aeromonas hydrophila was assessed by the presence and absence of inhibition zones. Fingerlings fed with diet D3 achieved higher net weight gain (17.49 ± 0.2461 g), specific growth rate (0.197 ± 0.018 %), gross conversion efficiency (0.7478 ± 0.0019) and better feed conversion ratio (1.337 ± 0.0057) as compared to other treatments. In the current study, the haematological parameters (TEC, TLC, Hb, PCV etc.) varied significantly (P< 0.05) between the 0th day, pre challenged and post challenged group. The total serum protein, albumin, globulin, A/G ratio, ALT, lysozyme activity and NBT assay resulted in a significant (P< 0.05) increment between the pre challenged and the post challenged groups in all the treatment groups fed with the experimental diet. The water quality parameters like water temperature, dissolved oxygen, free carbon dioxide, pH and total alkalinity were within the tolerance range of the experimental fish. The results indicate that the experimented phytobiotics along with vitamin C and chitosan have very good growth promoting and immunostimulatory effect and does not have any adverse effect on health of Cyprinus carpio haematopterus in culture system.