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Theses

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2004 - 20085
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Subject: Aquaculture × End date: 2009 × Start date: 2004 × Type: Thesis ×
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    ThesisItemOpen Access
    Analysis of production performance of species combination based carp farming in tarai agro-climatic regime
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2006-07) Bindu Priya, K.; Chauhan, R.S.
    The study was conducted in three rectangular earthen ponds of the size of 0.026 ha, 0.034 ha and 0.03 ha with 0.75±0.10 m water depth. Four species of carps namely, Labeo rohita, Catla catla, Cirrhinus mrigala and Hypophthalmichthys molitrix at the ratio of 80 : 6 : 8 : 6 in pond 1, six species of carps namely Catla catla, Labeo rohita, Cirhinus mrigala, Hypophthalmichthys molitrix, Ctenopharyngodon idella and Cyprinus carpio at the ratio of 20 : 25 : 15 : 15 : 15 : 10 : 15 in pond 2 and three Indian major carps namely Catla catla, Labeo rohita and Cirrhinus mrigala at the ratio of 40 : 30 : 30 were stocked @ 10,000/ha. Raw cattle dung @ 15000 kg/ha/yr and lime @ 200 kg/ha/yr were applied in split doses in all the three experimental ponds. The rearing period was 8 months. The fish were given pelletized feed daily @ 3-5 per cent of their body weight. No drastic deviation from the acceptable range of water quality parameters was recorded. Fish growth were recorded in all the three experimental ponds. The plankton volume in ponds increased gradually towards the end of the study. Hundred per cent survival of fish was observed in ponds 1 and 2 and 83.3 per cent in ponds 3. Production to the tune of 74.32 kg (4,280 kg/ha/yr), 131.72 kg (5,677 kg/ha/yr), 84.49 kg (4,141 kg/ha/yr) could be obtained from ponds 1, 2 and 3, respectively. Net profit of Rs. 1,20,431.13 (4 species), Rs.1,38,053.03 (6 species) and Rs. 1,11,967.00 (3 species) were obtained from the experimental ponds. It is inferred that from the biomass point of view 6 species combination is preferable but from the monetary point of view 4 species combination is recommended. The present study revealed that various species combination based carp farming systems in Tarai region of Uttaranchal are profitable and sustained.
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    ThesisItemOpen Access
    Comparison of the performance of model carp hatchery with Chinese circular hatchery
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2006-06) Laxmi; Upadhyay, A.K.
    Comparative study was conducted to find out the efficacy of model carp hatchery with best performance of Chinese circular hatchery for seed production of carp fish. Experiment was conducted at College of Fisheries, Pantnagar with comparative study of different Physico-chemical parameters and breeding parameters in both the hatchery systems, during the same breeding season and with same brood stock. Functioning of model carp hatchery has also being optimized for water flow rate, stocking density and hatching period, which has been found as 8 l/min, 80 thousand and 24 hrs respectively. The suitable range of water temperature as 250C to 270C and dissolved oxygen content as 9.0-11.5 ppm with almost constant pH around 7 has been recorded for best recovery. Low level of free Co2 and increasing trend of alkalinity, after hatching of eggs with highest value of alkalinity as 72 ppm was found in model carp hatchery. Increasing trend of nitrate and phosphate was found after the hatching of eggs with maximum values as 16.123 μg/l and 0.205 μg/l, respectively. Indian major carps experienced better for all breeding parameters and finally spawn recovery as compare to Chinese carps with both the systems. Comparatively model carp hatchery was found to exist the most optimal levels of different Physico-chemical parameters with slightly higher recovery than the Chinese circular hatchery, indicating the suitability of the model carp hatchery for rural and resource poor aqua farmers.
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    ThesisItemOpen Access
    Influence of temperatures and dietary protein levels on biochemical composition in relation to growth of golden mahseer, Tor putitora (Ham)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2005-06) Roy, Samar; Upadhyay, A.K.
    The present study was conducted to asses the growth performance of golden mahseer fry under different temperature regime and with different concentrated protein diet. An attempt has also been made to standardize and asses the extreme lethal temperature for survival of mahseer fry. In order to find the extreme lethal temperature limit an experiment was conducted in laboratory condition in glass aquarium maintaining temperature 9, 10, 11, 23, 30, 34, 36 and 370C for 96 hours and it was found that the temperature 90C and below or 370C and above are highly lethal for survival of fry. The assessment of growth performance of mahseer fry was conducted under different rearing temperature maintained at 20.82 ± 2.250C, 25.74 ± 2.790C, 30.86 ± 2.440C and room temperature (11.20 ± 2.840C) administrating the formulated diet of 38.79% protein in indoor condition. The result on basis of weight gain, survivality and SGR revealed that the suitable temperature for mahseer fry growth lies between 20-300C with 250C as optimum. The present study also encompasses the comparative performances of endangered cyprinid, Tor putitora at two geographical locations viz. Bhimtal and Pantnagar having different inhabitant temperature by maintaining 20.9%, 30.86% and 38.74% crude protein levels in diet. The finding of growth in terms of length gain, weight gain, SGR and survivality indicated the excellent performance at 38.74% of crude protein level in the diet. The whole body carcass composition from the experimental fry exhibited increasing levels of protein, lipid and decreasing levels of moisture fed with increasing dietary protein levels. In an attempt to correlate the growth performance of mahseer fry in varying temperature and dietary protein at molecular level, certain key enzymes viz. amylase, protease, GOT, LDH along with total DNA content were evaluated. The amylase and protease activity showed a significantly (P ≤ 0.05) positive relation with increasing temperature from 11 to 300C and total DNA showed positive relation up to 250C. Protease activity and total DNA content also showed positive relation with the increasing dietary protein levels, whereas amylase activity with increasing dietary carbohydrate levels. However GOT and LDH did not exhibited any particular correlation under the varying temperature and different protein regime in the diet.
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    ThesisItemOpen Access
    Dynamics of fish-duck integrated aquafarming in tarai region of Uttaranchal
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-06) Sharma, Rajen; Chauhan, R.S.
    The study was conducted in two rectangular earthen ponds of the size of 0.5 ha each. Six species of carps namely, Catla catla, Labeo rohita, Cirrhinus mrigala, Hypophthalmichthys molitrix, Ctenopharyngodon idella and Cyprinus carpio were stocked @ 10,000/ha. One of the pond was completed integrated with duck-culture, for which duck house made of bamboo was erected over the pond for housing of 300 nos of day old duckling of “Khaki Campbell” variety. All the excreta and spilled over duck feed from duck house fell directly to the duck-fish pond. No artificial feeding was done to experimental fishes. No drastic deviation from the acceptable range of water quality parameter was recorded in duck-fish integrated pond. The plankton valued enhanced gradually towards the end of the study. The spilled over duck feed amount 14.376%of the feed given to the ducks. Total quantity of 5052.48 kg duck dropping (amounting to 23051.94 kg/ha/yr) was added recycled in duck-fish pond. The calculated amount of nitrogen (314.66 kg), phosphorus (228.37 kg), potassium (82.987 kg) and organic carbon (2881.50 kg) per ha/yr got entry to duck-fish pond through recycling of duck excreta which helped in maintaining a healthy population of fish food organisms in the pond and enrichment of soil of pond bottom. Average survival of 92% in ducks and 71.57% in fishes was observed. Production to the tune of 1259.82 kg fish (5039.28 kg/ha/yr) and 449.052 kg ducks (1796.21 kg/ha/yr) could be obtained from the duck fish pond while only 1178.8 kg fish (4715.2 kg/ha/yr) was recovered from control pond. It is inferred that integrated duck fish farming is economically profitable, technologically sound and environmentally congenial farming practice which also helps in the abatement of environment pollution, employment generations and product diversification.
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    ThesisItemOpen Access
    Environmental impact on the induced breeding of cultivable species of carps in tarai region of Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2008-06) Yadu Kumar, K.S.; Singh, U.P.
    The study was conducted to find out the effect of varying environmental condition on the induced breeding of carps. Experiment was conducted at College of Fisheries, Pantnagar with comparative study of different Physico-chemical parameters and breeding parameters in outdoor and indoor hatchery systems during the same breeding season and with same brood stock. The favourable environmental condition with average maximum rainfall shows maximum relative fecundity in breeding hapa than in the breeding tank during monsoon breeding season (June-July). Average breeding parameter shows optimum level at 28°C in indoor hatchery and upto 35°C in outdoor hatchery. The fluctuation in the breeding parameter is significantly decreasing towards the ending of breeding season in both hatchery systems but in outdoor hatchery it is strongly correlated with water quality parameter. The survival rate of fries also varies significantly with varying environmental condition (F=0.0008) and dissolved oxygen shows significant influence (P=0.001) followed by water temperature (P=0.01). The comparative efficacy of inducing agents on fecundity and fertilization rate reveals that Ovaprim had better results during monsoon breeding season and WOVA-FH during late monsoon season. The significant observation was that the breeding performance was better during the conducive environmental condition in ponds as well as in indoor hatchery systems in respect to ovulation, fertilization and hatching percentage.