Sustainable aquaculture and aquatic resources management

Practical significance of restricted feeding regime in aquaculture

Author(s): Kumar, P., Arun Sudhagar, S., V. Harikrishna and Manish Jayant | Published: 11/4/2017 | 154 views

Feed is the most expensive component of an aquaculture enterprise. Successful cultured fish production requires optimisation of feeding practices to ensure the most economically effective growth rates. Reducing feed costs for culture practices can be achieved by taking the advantage of restricted feeding strategies. Under a restricted feeding regime fish convert a greater portion of feed to body weight. Case studies of restricted feeding are presented for several species and the costs savings and other benefits are briefly discussed.

NACA Newsletter October-December 2015

Published: 1/10/2015 | 1390 views
  • Register for the 11th Asian Fisheries and Aquaculture Forum and GAF6.
  • 6th Global Symposium on Gender in Aquaculture and Fisheries.
  • Global Conference on Climate Change Adaptation for Fisheries and Aquaculture.
  • A Review of women's access to fish in small-scale fisheries.
  • Aquaculture operations in floating HDPE cages: a field handbook.
  • Aquaculture seed and feed production and management in Bangladesh: Status, issues and constraints.

NACA Newsletter, January-March 2014

Published: 22/4/2014 | 2517 views
  • International Symposium on Small-scale Freshwater Aquaculture Extension, 2-5 December, Bangkok.
  • 12th Meeting of the Asia Regional Advisory Group on Aquatic Animal Health.
  • National Workshop on EMS/AHPND of Cultured Shrimp held in India.
  • Report on early mortality syndrome / acute hepatopancreatic necrosis syndrome of shrimp.
  • Sustaining Ethical Aquaculture Trade Newsletter.
  • India and the AFSPAN Project.
  • Report on AFSPAN Chilean survey.
  • Feeding and feed management of Indian major carps in Andhra Pradesh.

Feeding and feed management of Indian major carps in Andhra Pradesh, India

Author(s): Ramakrishna, R., Shipton, T.A., Hasan, M.R. | Published: 15/12/2013 | 3082 views

This technical paper reviews the aquaculture of Indian major carps with special reference to current feeding and feed management practices in Andhra Pradesh, India. The study is based on a survey of 106 farmers from four regions in Andhra Pradesh (Kolleru, Krishna, West Godavari, and Nellore). While the study primarily focused on the feed management practices associated with major carp production, management practices that are used under polyculture conditions with other species-groups were also assessed. The study revealed that mash feed was the most popular and widely used feed type. De-oiled rice bran was used as the principal feed ingredient, followed by groundnut cake, cottonseed cake and raw rice bran. The poor quality of the mash feed ingredients, especially the de-oiled rice bran, groundnut cake, and cottonseed cake was an important issue of concern to the farmers. Commercially manufactured pelleted feeds were used by 33 percent of the farmers to complement their mash feeds, with the majority choosing to use sinking pellets. Since 2007, there has been a marked increase in the use of commercial pellets, most notably for the large-scale production of the striped catfish. Grow-out farmers feeding mash feeds used variants of a bag feeding method known as rope and pole feeding. In the nursery and rearing ponds, the commonly used feed ingredients included groundnut cake, de-oiled rice bran and raw rice bran. The most common feeding practice was broadcast feeding. Constraints to Indian major carp production were identified, and research and development needs characterised.

Aquaculture Asia Magazine, Vol. XVIII No. 2, April-June 2013

Published: 3/10/2013 | 2932 views
  • Peter Edwards writes on rural aquaculture: Cultivation of spirulina in India
  • Fish Farmer Field School: Towards healthier milkfish / shrimp polyculture and fish farmer empowerment in South Sulawesi
    Ben Brown and Ratna Fadillah
  • A success story of Maa Tarini Self Healp Group Ornamental Fish Unit, Purunia Village, Keonjhar District, Odisha, India
    Swain, S.K., Baliarsing, B.K,, Sahoo, S.K., Meher, P.K., Patro, B., Rajesh, N., Dash, P.C., Jayasankar, P. and Jena, J.K.
  • Use of lactic acid bacteria in fish farming
    Sukanta Kumar Nayak
  • NACA Newsletter

Hatchery Feed Guide and Year Book 2013

Author(s): | Published: 23/7/2013 | 2138 views was launched in 2012 as an offshoot of, in response to requests for dedicated information for this specialized area of the industry. Over the past several months we have been adding to the site and have produced newsletters and started a Facebook page and LinkedIn discussion group to help bring hatchery operators together. The one question we continue to be asked is “Who supplies hatchery feeds?” This publication is a first attempt to answer that question.

The Hatchery Feed Guide and Year Book brings together information about hatchery feeds available on the market today. It makes no claim to be comprehensive, but we hope this first issue is a step towards making the lives of hatchery operators a little easier—at least when it comes to finding and selecting feeds. We hope you will give us some feedback on what you like and don’t like and what you would like to see in the next one. A note about the listings: we have relied entirely on information provided by suppliers in the compilation of the listings in this guide [See complete Disclaimer information]. We appreciate the time these companies have taken and the encouragement they have given us. If you supply hatchery feeds and your products are not included we apologize; please email me to make sure we contact you in time for the next issue. We also thank the editorial contributors for the articles that are included.

Please feel free to share this publication: forward it to your friends and colleagues—but please keep in intact.

Suzi Dominy

editor 'at'

Diet formulator program (Excel)

Published: 25/8/2008 | 15140 views
Diet Formulator is a simple Excel-based diet calculation program. It is not a least-cost diet formulation program, but simply a tool that allows the user to select ingredients and calculate the nutritional specification of the formulated diet. The strength of the program is the database of feed ingredients that are common to SE Asia. However, it must be recognized that the nutritional specifications for these ingredients are only the best average values that the author was able to source. The program will allow the user to insert other ingredients for which the user has his/her own chemical analysis. Also, ingredient costs can be entered in the database and the program will calculate the ingredient cost of the diet formulation.

Instructions on use of this program are also available for download as a Word document. Please read the instructions! For more information about the program please contact kevin.williams 'at' We would like to thank Dr Kevin Williams from CSIRO for sharing this resource.

A fresh ethical perspective on the use of fishery resources in animal feeds

Published: 23/3/2009 | 3251 views
Fish is a biological resource, indispensable for the equilibrium of the entire food chain in many ecosystems, but also indispensable as a source of nourishing food and raw material for feed preparation. Unfortunately, this resource is limited and its over-exploitation will ultimately lead to a global collapse. Hence, there is a pressing need for initiating a global debate on the ethical nature of current practices on the use of this precious natural resource.

A Practical Guide to Feeds and Feed Management for Cultured Grouper

Published: 1/6/2005 | 9896 views
Farming of groupers (members of the Serranidae, subfamily Epinephelinae) is widely practiced in Asia. Groupers are carnivorous and consequently prefer feeds high in fish protein. Most farms in Asia still rely on what is commonly termed ?trash fish?. Despite the apparent abundance and availability of ?trash? fish in many areas, there are some issues and problems related to its use in fish farming.

To provide farmers with a viable alternative to feeding trash fish to grouper, the Australian Centre for International Agricultural Research (ACIAR) supported project FIS/97/73 Improved hatchery and grow-out technology for grouper aquaculture in the Asia-Pacific region from 1999 to 2002, with one component to develop formulated feed for grouper aquaculture. The experiences of the project have been synthesized into this Practical Guide to Feeds and Feed Management for Cultured Groupers to promote the use of formulated feeds; promote reduction in the use of ?trash? fish in grouper aquaculture; and to assist farmers in making more efficient use of feeds and feed resources.

This guide explores new and better farming practices making use of formulated feeds, as well as technical aspects of feed storage and quality control, management of feeding including weaning of groupers onto formulated feeds and economic considerations.

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