PRODUCTION OF BACTERIOCIN FROM NOVEL B.TEQUILENSIS AND ITS EFFECT IN TRICHOGASTER TRICHOPTERUS
S. Subharanjani*, P. Prema and G. Immanuel
ABSTRACT
Among famous million dollar industries around the globe, the industries of ornamental fish and aquarium provisions trade the worth of 500 million US dollars. Aquarium fish grips 100 times more cost than the edible fish and marine ornamentals. The restricted accessibility of species specific nutritionally stable diets is the key issuein ornamental fish farming. Among freshwater ornamental fishes, blue gourami (Trichogaster trichopterus) is a most desired ornamental fish. As a result, development of species specific ornamental fish diet is one of the chief concerns in fish nutrition research. Probiotics are the valuable microorganisms and their products offer health aids to the host. They are valuable in aquaculture as growth promoters, disease controlling agents and the can also be used as alternate to antimicrobial agents. The prime crisis faced by aquariculturists is the insurmountable mortalities connected with diseases. The current research emphasizes the effect of B.tequilensis against the fish pathogen V.vulnificus and provides elaborate understanding of in vivo effect of probiotics in fresh water fish Trichogaster trichopterus. The increase in total length(7.55±0.75 cm), weight gain (6.32±0.64 g), Average food conversion ratio (FCR), Specific growth rate (SGR), feed conversion efficiency (FCE),daily growth rate (DGR), feeding behavior and haematological characteristics were studied. In overall experimental period the mortality rate was 7% for control and 2% for feed with probiotics. The present study advocates that probiotics are valuable feed supplements for the ornamental fishes.
Keywords: Trichogaster trichopterus, B.tequilensis, Food conversion ratio (FCR), Specific growth rate (SGR), feed conversion efficiency (FCE), daily growth rate (DGR).
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