alexa Seaweed Ulva reticulata a Potential Feed Supplement for
ISSN: 2155-9546

Journal of Aquaculture Research & Development
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Research Article

Seaweed Ulva reticulata a Potential Feed Supplement for Growth, Colouration and Disease Resistance in Fresh Water Ornamental Gold Fish, Carassius auratus

Rama Nisha P1,2*, Elezabeth Mary A1, Uthayasiva M2, and Arularasan S2
1Department of Zoology, St. Mary’s College (Autonomous), Thoothukudi–628 001, Tamil Nadu, India
2CAS in Marine Biology, Faculty of Marine Science, Annamalai University, Parangipettai-608502, Tamil Nadu, India
Corresponding Author : Rama Nisha P, Ph.D.
Research Scholar, CAS in Marine Biology
Faculty of Marine Science, Annamalai University
Parangipettai-608502, Tamil Nadu, India
Tel: 91-9952666281
E-mail: [email protected]
Received June 14, 2014; Accepted July 26, 2014; Published August 04, 2014
Citation: Rama Nisha P, Elezabeth Mary A, Uthayasiva M, Arularasan S (2014) Seaweed Ulva reticulata a Potential Feed Supplement for Growth, Colouration and Disease Resistance in Fresh Water Ornamental Gold Fish, Carassius auratus. J Aquac Res Development 5:254 doi: 10.4172/2155-9546.1000254
Copyright: © 2014 Rama Nisha P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Gold fish (Carassius auratus) being an omnivorous fish was chosen as the candidate fish. Fingerling of C.
auratus 2.34 gm after acclimated to laboratory condition for a period of 15 days were used in various studies. Five feeding types with 35% dietary protein level and with varying levels of algal meal were prepared and used. The fish were divided in to 5 groups. Group I was fed on Ulva reticulata free diet. Fish belonging to groups II, III, IV and V were fed on diets with 2, 4, 6 and 8% of Ulva reticulata supplementation respectively for 40 days. At the end of the experimental period growth, proximate composition, haematological parameters and carotenoid content were analyzed. It can be conclusively deduced from this study that Ulva reticulata had positively improved growth performance, haematological parameters and coloration in gold fish C. auratus. Reasons could be the high nutrient and mineral profile and carotene and chlorophyll a, b content of Ulva reticulata. This study suggests that U. reticulata can be included as an ingredient of gold fish diet up to 8%. Owing to the presence of disease resistance imparting antibacterial substances in the algae gold fish remained active and healthy and were free from bacterial infection, during the period of investigation. Antibacterial activity of U. reticulata on the tested fish pathogens indicates the scope of using extracts of U. reticulata an immuno- prophylactic for health management in the culture of Gold fish. Based on the results of this study, it was concluded that short term feeding had no adverse effect on gold fish but long term effect needs future research. Future work should focus on digestibility coefficients of different nutrient classes in U. reticulata prior to inclusion in formulated diets.

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