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20111
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Author: DIVYA, BHOGI × Start date: 2010 ×
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    ThesisItemOpen Access
    STUDIES ON THE GROWTH AND SURVIVAL OF IMPORTANT ORNAMENTAL ANGEL FISH (PTEROPHYLLUM SCALARE) AND THREE SPOT GOURAMI (TRICHOGASTER TRICHOPTERUS) FED WITH FORMULATED AND NATURAL FEEDS
    (SRI VENKATESWARA VETERINARY UNIVERSITY , TIRUPATI - 517 502 , A.P, 2011-11) DIVYA, BHOGI; CHAMUNDESWARI DEVI, B (Major); RAVINDRA KUMAR REDDY, D; SUDHAKAR, O
    ABDTRACT: The present study was conducted on “Studies on Growth and Survival of Important Ornamental Angel Fish (Pterophyllum scalare) and Three Spot Gourami (Trichogaster trichopterus) Fed with Formulated and Natural Feeds” in the wet laboratory of the Department of Aquaculture, College of Fishery Science, Sri Venkateswara Veterinary University, Muthukur. Present study was conducted in two sets of experiments. First set of experiment (experiment A) was conducted for a period of 60 days fed with formulated feed prepared with inclusion of Acetes at different levels 5%, 10%, 20% and 30%. This experiment revealed formulated feed with 20% Acetes gave the best results. Next set of experiment (experiment B) was conducted with formulated diet as a control feed while the other two were Cyclop-eezee and Mysid. The second set of experiment was conducted for a period of 90 days, for observing on growth and survival of angels and gouramies. In this experiment the fallowing diets were used formulated diet as a (control), mysid alone (T2), 50% formulated + 50% mysid (T3), cyclop-eezee alone (T4) and 50% formulated + 50% cyclopeezee (T5) . A significant effect of feed on fishes was observed. Among different feeds cyclop-eeze + formulated feed (T5), followed by mysid + formulated feed (T3) gave better results. Least in mysid fed group (T2), due to its large particle size and chitin. Co-feeding was given better results due to the availabity of nutrients in balanced proportions. Visual score assessment of Gourami by randomly recruited panelists revealed that among the different diets cyclopeezee was recorded highest score. Sampling was done once in 15 days for water quality viz., pH, Temperature, Dissolved Oxygen (D.O), Total Alkalinity and Total Hardness. The growth, survival and feed conversion ratio were estimated by sampling the fish once in 15 days. Regular monitoring of water quality parameters revealed that the experiment diets with different ingredients had no influence on the quality of water. From the above studies, it can be concluded that Acetes meal can be included in the diets of Angels and Gouramies at an optimum level of 20%. Use of Acetes indicus supplemented formulated feed, mysids and cyclop-eeze meal improve survival and growth, less FCR but when compared with the cost of the feeds mysid meal and cyclop-eeze are costlier than that of formulated feed. The present study concludes that by using a combination of feeds gave better growth and also more economical.