Anas, A; Bright Singh, I S(Centre for Fish Disease Diagnosis and Management, School of Environmental Studies, 2005)
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Abstract:
Present work is aimed at development of an appropriate microbial technology for protection of larvae of macrobrachium rosenbergii from disease and to increase survival rate in hatcheries. Application of immunostimulants to activate the immune system of cultured animals against pathogen is the widely accepted alternative to antibiotics in aquaculture. The most important immunostimulant is glucan. Therefore a research programme entitled as extraction of glucan from Acremonium diospyri and its application in macrobrachium rosenbergii larval rearing system along with bacterians as microspheres. The main objectives of the study are development of aquaculture grade glucan from acremonium diospyri, microencapsulated drug delivery system for the larvae of M. rosenbergii and microencapsulated glucan with bacterian preparation for the enhanced production of M. rosenbergii in larval rearing system. Based on the results of field trials microencapsulated glucan with bacterin preparation, it is concluded that the microencapsulated preparation at a concentration of 25g per million larvae once in seven days will enhance the production and quality seed of M. rosenbergii.
Sunitha, Poulose; Dr.Bright Singh, I S(Cochin University of Science And Technology, February , 2013)
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Abstract:
Marine yeast have been regarded as safe and showing a beneficial
impact on biotechnological process. It provides better nutritional and
dietary values indicating their potential application as feed supplements in
aquaculture. Brown et al. (1996) evaluated all the marine yeasts
characterised with high protein content, carbohydrate, good amino acid
composition and high levels of saturated fats. However, there is paucity of
information on marine yeasts as feed supplements and no feed formulation
has been found either in literature or in market supplemented with them.
This statement supported by Zhenming et al. (2006) reported still a lack of
feed composed of single cell protein (SCP) from marine yeasts with high
content of protein and other nutrients. Recent research has shown that
marine yeasts also have highly potential uses in food, feed, medical and
biofuel industries as well as marine biotechnology (Chi et al., 2009; 2010).
Sajeevan et al. (2006; 2009a) and Sarlin and Philip (2011) demonstrates
that the marine yeasts Candida sake served as a high quality, inexpensive
nutrient source and it had proven immunostimulatory properties for
cultured shrimps. This strain has been made part of the culture collection of
National Centre for Aquatic Animal Health, Cochin University of Science
and Technology as Candida MCCF 101. Over the years marine yeasts have
been gaining increased attention in animal feed industry due to their
nutritional value and immune boosting property.Therefore, the present study was undertaken, and focused on the
nutritional quality, optimization of large scale production and evaluation of
its protective effect on Koi carp from Aeromonas infection
Description:
National Centre for Aquatic Animal Health
School of Environmental Studies
Cochin University of Science and Technology
Surekhamol, I S; Dr.Bright Singh,I S(Cochin University of Science and Technology, November , 2012)
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Abstract:
Aquaculture is a global industry providing food and employment thereby contributing to the economy. For the sustenance of aquaculture, disease management is a major requirement. Among the bacterial pathogens Vibrio harveyi remains to be the major one especially in shrimp culture systems. Rapid
and mass mortality of shrimp larvae due to Vibrio harveyi infection is well known, and the pathogen causes serious economic losses in grow out systems as well. It suggests that a well defined management strategy has to be built up to protect the crop from Vibrio harveyi infection in aquaculture systems. Antibiotics have been the choice for quite some times which led to residues in meat and development of multidrug resistant bacteria which invited ban on their application. In this context several alternate options have been thought off such as probiotics, immunostimulants and vaccines. Phage therapy is yet another option. Phages being natural parasites of bacteria and are abundant in aquatic environments their application to control bacterial pathogens in aquaculture has commendable potential in lieu of antibiotics. For that matter the therapeutic effect of phages has been proven in several antibiotic resistant pathogens inclusive of Vibrio harveyi.
Description:
National Centre for Aquatic Animal
Health, School of Environmental Studies, Cochin University of Science and Technology