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Theses (PG)

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20224
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Subject: Aquaculture × End date: 2022 × Start date: 2022 ×
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    ThesisItemOpen Access
    EFFECTS OF DIETARY INCORPORATION OF ORGANIC ACID SALT, SODIUM BUTYRATE ON GROWTH PERFORMANCE, IMMUNE RESPONSE, DISEASE RESISTANCE AND GUT HISTOLOGY IN AMUR COMMON CARP (CYPRINUS CARPIO HAEMATOPTERUS
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR, 2022) WALDE SWAPNIL GOPAL; MANJAPPA
    Organic acids in various forms can be used as dietary supplements in aquaculture. The present study was conducted to evaluate the use of a sodium butyrate as a feed additive to enhance growth and health in Amur common carp. A total of 180 healthy Cyprinus carpio haematopterus fingerlings with an average body weight of 4 ± 0.5 g (mean ± SE) were randomly divided into four equal groups (T0, T1, T2, and T3). T0 was fed with basal diet with no organic acid additive taken as the control group, while T1, T2, and T3 were fed the diets supplemented with 10, 20 and 30 g/kg of sodium butyrate salt respectively. Each group was subdivided in three, with 15 fish in each replication. After 90 days, the growth and survival performance of Amur common carp fingerlings, as well as immunology, infection resistance, body composition, and gut histology, were assessed. T3 had significant (p<0.05) improvements in final body weight (FBW), weight gain (WG), specific growth rate (SGR), and food conversion ratio (FCR) at the end of the feeding period compared to the other groups. T3 had the highest superoxide anion activity and lysozyme activity after 90 days. T3 groups had the highest protein and fat levels throughout their bodies. The widest inhibition zones against Aeromonas hydrophila were at the 30, 40 and 50% concentrations of sodium butyrate. The best protection against challenged Aeromonas hydrophila was in T3. The study indicates the efficacy of addition of sodium butyrate in enhancing the growth and health in Amur common carp, Cyprinus carpio haematopterus. The treatments improved the histological architecture and cellular components of the intestine compared to the control. The study shows that adding sodium butyrate to Amur common carp Cyprinus carpio haematopterus improves their growth and health.
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    ThesisItemOpen Access
    EFFECT OF DIETARY PREBIOTIC INULIN ON THE GROWTH, SURVIVAL, IMMUNE RESPONSE, DISEASE RESISTANCE AND HAEMATOLOGY IN AMUR COMMON CARP (CYPRINUS CARPIO HAEMATOPTERUS)
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR., 2022) PAVAN KUMAR, P.,; Manjappa
    Aquaculture is one of the fastest growing industries in the world. There is a need for enhanced disease resistance, feed efficiency and growth performance of cultured fish species. Dietary supplementation of different feed additives e.g., immunostimulants, probiotics and prebiotics usually in small quantities for the purpose of fortifying it with certain nutrients have been found to be beneficial for improving immune status, feed efficiency and growth performance of finfishes. The study on performance of prebiotic inulin on fish health and growth in Amur common carp were investigated for a period of 90 days. The basal diet in all trials (30% protein) was incorporated with different levels of prebiotic inulin at 5g/kg (T1), 10g/kg (T2), 15g/kg (T3) in triplicates with control diets devoid of inulin. 15 numbers of Amur common carp fingerlings (4±0.5g) were stocked in FRP and fed with 5% experimental diet for a period of 90 days and evaluated for growth performance, hematology, immune response and disease resistance against A. hydrophila. The growth parameters such as weight gain, SGR, FCR, PER and survival was found higher in T2 (inulin at 1%) and showed significant difference between treatment and control group. The treatment T2 fed fish showed higher immune parameters such as NBT assay, lysozyme activity, phagocytic activity, serum albumin, serum globulin. Highest serum protein and albumin and globulin ratio was observed in T0(control). Fishes challenged against A. hydrophila after 90 days feeding, where, T2 fed fish showed significantly higher resistance than other treatment and control group. The hematological parameters such as RBC, WBC, haemoglobin, hematocrit, MCV, MCH, MCHC showed no significant difference but higher in T2. Among the tested doses, there was no harm or inefficient effects and appear to be safe for usage in fish feeds.
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    ThesisItemOpen Access
    EVALUATION OF DIFFERENT STRATEGIES FOR ENHANCEMENT OF SURVIVAL RATE AND GROWTH PERFORMANCE IN THE NURSERY REARING OF AMUR COMMON CARP, CYPRINUS CARPIO HAEMATOPTERUS
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR, 2022) PARVIND KUMAR; MANJAPPA
    The present research was conducted to investigate the effect of different stocking densities and protein percentage in the nursery rearing of Amur common carp (Cyprinus carpio haematopterus). The experiment was carried out in two stages viz., spawn to fry and fry to fingerling. The growth results of spawn to fry showed maximum average weight in treatment T2 (190 mg - mixture of organic and inorganic fertilizers) followed by T1 (140 mg - mixture of GOC and cow dung), t3 (140 mg-cow dung + SSP and Urea) and control groups T0 (50 mg - cow dung). There was significant difference (P<0.05) observed in between the treatments and control. The survival percentage was observed high in T2 (42.98%) followed by T3 (41.01%), T1 (40.18%) and T0 (34.08%). The better growth and survival in nursery rearing from fry to fingerling for a period of 60 days was observed in T1 (40% protein feed) followed by T0 (35% protein feed) and T2 (30% protein feed). The water quality parameters recorded during the study period and found suitable for seed rearing. High average phytoplankton density (64-140 Nos/l) and zooplankton (59-67 Nos/l) was observed. The result of current experiment clearly demonstrates that use of organic and inorganic fertilizer mixture was suitable in spawn to fry development and 40% protein feed helped in better growth and survival from fry to fingerling of Amur carp. Keywords: Amur carp, Spawn to fry, Fry to fingerling, Physico-chemical characteristics
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    ThesisItemUnknown
    EFFECT OF DIETARY NONI (MORINDA CITRIFOLIA) ON GROWTH PERFORMANCE, IMMUNE RESPONSE, DISEASE RESISTANCE AND GUT HISTOLOGY OF COMMON CARP (CYPRINUS CARPIO)
    (KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR, 2022) JYOTI; ganapathi naik
    Aquaculture has been growing rapidly for food production in the last few decades. Several commercial fish species have been intensively cultured under conditions of overcrowding or high density, perhaps resulting in a stressful environment and infectious diseases. Fish farmers continue to use large amounts of antibiotics and chemotherapeutics. Continuous use of antibiotics, on the other hand, results in drug-resistant bacteria, bioaccumulation and pollution of the environment. Many medicinal herbs have developed effective defences against pathogenic bacteria and there is growing interest in them as natural antibacterial agents. In this context, the 90 days study was undertaken to evaluate the effect of dietary noni (Morinda citrifolia) on growth performance, immune response, disease resistance and gut histology of common carp (Cyprinus carpio). The basal diet in all trials (30% protein) was incorporated with different levels of noni fruit juice at the rate of 100 ml (T1), 300 ml (T2) and 500 ml / kg (T3) feed respectively in triplicates with control diet (T0) without noni fruit juice. The results showed 100% survival rate in all the groups. At the end of feeding trial T2 showed a significant improved (p ˂ 0.05) improvement in final body weight (FBW), weight gain (WG), specific growth rate (SGR) and protein retention (PR), better feed conversion ratio compared to control group. Superoxide anion production higher in T2 & lysozyme activity wassignificantly higher (p ˂ 0.05) in T2 compared to other treatments. The best protection challenged against A. hydrophila was in T2 with 100% survival rate. In gut histology, all treatments showed better architecture and control groups showed normal villi, villi height and crypt depth.