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International Journal of Fisheries and Aquaculture Volume 7 Number 5 May 2015 ISSN 2006-9839

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International Journal of Fisheries and Aquaculture Volume 7 Number 5 May 2015 ISSN 2006-9839 International Journal of Fisheries and Aquaculture Volume 7 Number 5 May 2015 ISSN 2006-9839 ABOUT IJFA The International Journal of Fisheries and Aquaculture (IJFA) (ISSN: 2006-9839) is an open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as algaculture, Mariculture, fishery in terms of ecosystem health, Fisheries acoustics etc. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published shortly after acceptance. All articles published in the IJFA are peer-reviewed. Contact Us Editorial Office: [email protected] Help Desk: [email protected] Website: http://www.academicjournals.org/journal/IJFA Submit manuscript online http://ms.academicjournals.me/ Editors Prof. Ashraf Mohamed Abd El-Samee Goda Dr. Kostas Kapiris Fish Nutrition Research Laboratory, Institute of Marine Biological National Institute of Oceanography and Resources of H.C.M.R., Fisheries (NIOF), Cairo, Athens, Hellas Egypt. Greece. Prof. Upali S. Amarasinghe Dr. Masoud Hedayatifard Department of Zoology, Department of Fisheries Sciences and Aquaculture University of Kelaniya, College of Agriculture and Natural Resources Kelaniya 11600, Sri Lanka. Advanced Education Center Sri Lanka. Islamic Azad University, Ghaemshahr, PO Box: 163, Iran. Dr. V.S. Chandrasekaran Central Institute of Brackishwater Aquaculture (ICAR) Dr. Zhang Xiaoshuan 75, Santhome High Road, R.A.Puram 209#, China Agricultural University(East campus), Chennai-600028, No.17 Qinghua Donglu, India. Beijing, China Dr Joseph Selvin Prof. Nihar Rajan Chattopadhyay Marine Bioprospecting Lab Department of aquaculture, Dept of Microbiology Faculty of Fishery Sciences, Bharathidasan University West Bengal University of Animal & Fishery Tiruchirappalli 620 024 Sciences, India. 5. Buderhat Road, P.O. Panchasayar, Kolkata 700094, West Bengal, India. Dr. Lourdes Jimenez-Badillo Ecology and Fisheries Centre, General Direction of Investigation, Universidad Veracruzana, Hidalgo 617, Col. Río Jamapa, Boca del Río, Veracruz, México ZP 94290 . Editorial Board Dr. Dada Adekunle Ayokanmi Dr. Harikrishnan Department of Fisheries and Aquaculture Faculty of Marine Science Technology, Federal University of College of Ocean Sciences Technology, P.M.B 704, Jeju National University, Jeju, 690-756 Akure, Ondo State, South Korea . Nigeria. Dr. Ramasamy Harikrishnan Prof. Ratha Braja Kishore KOSEF Post Doctoral Fellow, Faculty of Department of Zoology Marine Science, College of Ocean Sciences, Biochemical Adaptation Laboratory Jeju National University, Banaras Hindu University Jeju city, Jeju 690 756, Varanasi 221005 South Korea. India. Dr. Kawser Ahmed Dr. Esmaile AM Shakman Lab. of Ecology, Environment and Am Vögenteich,13/ 3.09.618057 Rostock Climate Change, Department of Fisheries, Germany . University of Dhaka, Dhaka-1000, Bangladesh. Prof B. Sharma Department of Biochemistry Dr. Maxwell Barson Coordinator, Centre for Biotechnology Biological Sciences Department University of Allahabad University of Zimbabwe PO Box MP 167 Allahabad-U.P., Mount Pleasant Harare, India. Zimbabwe. Dr. Sebastián Villasante Dr. Christopher Marlowe Arandela Caipang Fisheries Economics and Natural Resources Research Unit Faculty of Biosciences and Aquaculture, Bodø University University of Santiago de Compostela, A Coruña. College, Bodø 8049, Spain. Norway. Dr. Mohamed Hamed Yassien Dr. William S. Davidson National Institute of Oceanography and Fisheries, Suez Department of Molecular Biology and Biochemistry branch, Simon Fraser University 8888 University Drive P.O. Box (182), Suez, Burnaby, British Columbia Egypt. Canada V5A 1S6. Dr. Abhay Bhalchandra Thakur Dr. Babak Ghaednia 2/9 Mai Krupa Sagar Society Opp. Catering College Iran Shrimp Research Center ( ISRC) Veer Savarkar Marg Dadar, Mumbai -400 028 Taleghani High Way, P.O.Box 1374 Maharashtra, Bushehr, India. Iran . Dr. Riaz Ahmad Dr. Ramachandra Bhatta Department of Zoology Animal and Fisheries Sciences University, Aligarh Muslim University College of Fisheries, Aligarh- 202002, (UP) Kankanady Mangalore 575 002 India. Indi a. International Journal of Fisheries and Aquaculture Table of Contents: Volume 7 Number 5 May 2015 ARTICLES Research Articles Effect of dietary replacement of fishmeal with Chlorella vulgaris on 62 growth performance, energy utilization and digestive enzymes in Macrobrachium rosenbergii postlarvae Radhakrishnan S., Saravana Bhavan P., Seenivasan C. and Muralisankar T. Photosynthetic productivity and biomass of phytoplankton, in Lake 71 Kuriftu, Ormia Region, Ethiopia Zelalem Dessalegn Fayissa Vol. 7(5), pp. 62-70, May 2015 DOI: 10.5897/IJFA15.0471 Article Number: 736B4E353206 International Journal of Fisheries and ISSN 2006-9839 Copyright ©2015 Aquaculture Author(s) retain the copyright of this article http://www.academicjournals.org/IJFA Full Length Research Paper Effect of dietary replacement of fishmeal with Chlorella vulgaris on growth performance, energy utilization and digestive enzymes in Macrobrachium rosenbergii postlarvae Radhakrishnan S.*, Saravana Bhavan P., Seenivasan C. and Muralisankar T. Crustacean Biology Laboratory, Department of Zoology, Bharathiar University, Coimbatore – 641046. Tamilnadu, India. Received 3 January, 2015; Accepted 21 April, 2015 The present study was conducted to assess the growth promoting ability of Chlorella vulgaris on Marobrachium rosenbergii postlarvae. The experimental diets were prepared by fishmeal replacement with C. vulgaris at different levels (25, 50, 75 and 100%). The prepared feeds were offered to the M. rosenbergii postlarvae during 90 days in triplicate. At the end of the feeding experiment, survival rate, weight gain, specific growth rate and feed conversion efficiency were significantly (P < 0.05) higher in 50% C. vulgaris inclusion diet fed PL group. Similarly, total protein, amino acid, carbohydrate and lipid contents were significantly (P < 0.05) higher in specimens fed 50% C. vulgaris supplemented diet. The feeding rate, absorption rate, conversion rate were significantly (P < 0.05) higher in 50% C. vulgaris supplemented diet fed PL group. At this level of replacement, the activity level of digestive protease, amylase and lipase were significantly (P < 0.05) higher in 50% C. vulgaris supplemented group. Among all the experimental groups, the 50% fishmeal replacement with C. vulgaris inclusion diet fed group, showed significant performance. The present results revealed that the partial replacement of fish meal with C. vulgaris is favorable for M. rosenbergii postlarval culture. Key words: C. vulgaris, digestive enzymes, growth performance, M. rosenbergii. INTRODUCTION The culture of freshwater prawn, Macrobrachium predaceous species of fish, and it has a shorter larval rosenbergii (Scampi), has received a great deal of period. The M. rosenbergii breeding, larval culture and attention in India as a preferred crustacean. Under export is one of the important industries in south Indian controlled culture in freshwater and low saline ponds in states of Kerala, Andhra Pradesh and Tamilnadu. In inland, as well as coastal areas, it grows fastest among recent years, the aquaculture industry has succeeded in all freshwater prawns. It shows a wide range of reducing the inclusion rates of fishmeal and fish oil in the temperature and salinity tolerance, acceptance of a large aquafeeds. However, due to the increase in production of range of formulated diets, culture compatibility with non- all farmed species there is still a growing demand for *Corresponding author. E-mail: [email protected] Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Radhakrishnan et al. 63 these ingredients (Naylor et al. 2009). Fishmeal is the carbohydrate, lipid, essential amino acids and minerals principal source of protein in commercial aquafeeds. As a (Dawah et al., 2002; Tokusoglu and Unal, 2003; Janczyk et result of the steep increase in price of fishmeal and the al., 2005; Vaikosen et al., 2007). In this study, the effect of decline in fishery resources that goes in to fishmeal fishmeal dietary replacement with C. vulgaris on growth production, there is an interest in developing alternatives performance, energy utilization, carcass composition and to this finite component. Finding and testing alternate digestive enzyme activity in freshwater prawn M. rosenbergii protein and lipid sources is important to the aquatic feed postlarvae (PL) was evaluated. industry (Kiron et al. 2012). As microalgae protein is of good quality, with amino acid profiles comparable to that of other reference feed MATERIALS AND METHODS proteins, it could be a plausible alternative to fishmeal Culture of Chlorella vulgaris protein (Becker 2007). In addition, microalgae, which are the source of all photosynthetic ally fixed carbon in the Collection of pure mother culture of C. vulgaris: C. vulgaris food web of aquatic animals (Kwak and Zedler 1997), mother culture were collected from Vivekananda Institute of Algal may be an ideal replacement for fishmeal in aquatic Technology (VIAT), R.K.M. Vivekananda College, Chennai, Tamil feeds. Meal from the cyanobacterium Spirulina, a Nadu, India. brackish- water genus that is neither a eukaryote nor Preparation of inoculums: The microalgae, C. vulgaris, was marine, has been incorporated into experimental fish inoculated in Bold Basal medium (100 ml mother culture
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