JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editor in Chief
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
Read Journal
    Current Issue
    Journal Archives
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
    JEB Awards

Google Search the Journal web-site:

    Abstract - Issue Sep 2021, 42 (5)                                     Back

nstantaneous and historical temperature effects on a-pinene

Different carbon sources influences the growth and digestive enzyme activity of grey mullet (Mugil cephalus) in biofloc based nursery rearing system


H. Haridas1, N.K. Chadha2*, P.B. Sawant2, A.D. Deo3, M.P. Ande4, K. Syamala4, R. Sontakke5 and S.S. Lingam6 

1Division of Fisheries science, ICAR-Central Island Agriculture Research Institute, Port Blair, Andaman and Nicobar-744 101, India

2Division of Aquaculture, ICAR-Central Institute of Fisheries Education, Yari Road, Versova, Andheri, Mumbai-400 061, India

3Division of Fish Nutrition Biochemistry and Physiology, ICAR-Central Institute of Fisheries Education, Mumbai-400 061, India

4ICAR-Central Institute of Fisheries Education, Kakinada Centre, Kakinada Port– 533 001, India

5Sri Venkateshwara Veterinary University, College of Fishery Science, Muthukuru– 524 344, India

6Krishnagiri Barur Centre for Sustainable Aquaculture, Tamil Nadu Dr. Jayaalalithaa Fisheries University, Nagapattinam– 611 002, India

*Corresponding Author Email :


Received: 11.08.2020                                                                    Revised: 22.02.2021                                                                  Accepted: 06.04.2021




Aim: To assess the impact of different carbon sources on growth performance of grey mullet, Mugil cephalus fry in biofloc based culture system during nursery rearing phase.

Methodology: The experimental trial was carried out for 60 days using three carbon sources, cassava, jaggery and barley in triplicate following a Completely Randomized Design. The carbon nitrogen ratio (C:N) in the systems were maintained at 15:1. Grey mullet fry (0.91g) were stocked @ of 1 fry 10 l-1 and were fed with pelleted feed (35% crude protein) @ 4% of fish body weight thrice daily.

Results: Significantly higher (P<0.05) growth performance, in terms of Specfic Growth Rate (3.78 % day-1) with lower Feed Conversion Ratio (1.35) were found in barley based biofloc group. Similarly, enhanced digestive enzyme activity in terms of amylase (8.78 Unit mg protein-1 min-1), lipase (2.77 Unit mg protein-1 min-1) and protease (4.22 Unit mg protein-1 min-1) were found in barley based biofloc group. Non- specific immune parameters such as lysozyme, respiratory burst activity and myeloperoxidase activity were significantly higher in barley based treatment group followed by jaggery and cassava based treatment groups. Likewise, stress indicators in serum and antioxidant status in liver were found to be lower in barley based treatment compared to cassava and jaggery based treatment groups.      

Interpretation: Rearing of Mugil cephalus in biofloc culture system is practicable; however, the carbon source required for biofloc production could be barley, compared to cassava and jaggery, in order to achieve maximum growth and to reduce the stress.

Key words: Biofloc, Carbon source, Mugil sp., Nursery rearing




Copyright © 2021 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).