Effect of probiotic on reproductive performance in female livebearing ornamental fish

Ghosh, Shubhadeep and Sinha, Archana and Sahu, Chittaranjan (2007) Effect of probiotic on reproductive performance in female livebearing ornamental fish. Aquaculture Research, 38 (5). pp. 518-526.

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A probiotic bacterial strain, Bacillus subtilis, isolated from the intestine of Cirrhinus mrigala (Hamilton), was incorporated in ¢sh feed at four di¡erent concentrations (5 108 cells g2, 5 107 cells g2, 5 106cells g1 and 5 105 cells g1) and fed to four species of livebearing ornamental ¢sh, Poecilia reticulata (Peters), Poecilia sphenops (Valenciennes), Xiphophorus helleri (Heckel) and Xiphophorus maculatus (Gunther) for one year duration to observe the effect of dietary probiotic supplementation on their reproductive performance. Sixty virgin females of each species were stocked separately in circular FRP tanks (350 L) and fed diets with varying levels of probiotic cells and control feed. Broodstock performance was evaluated based on gonadosomatic index (GSI), fecundity and fry production of female broodstock. The results showed that supplementation of feed with probiotics increased signi¢cantly (Po0.05) the GSI, fecundity and fry production of spawning females and length and weight of fry in all the four species of ¢sh. The number of dead and deformed fry were also signi¢cantly lower (Po0.05) in ¢sh fed with the probiotic feeds.The use of higher concentration of the probiont in diet did not always lead to signi¢ cantly improved reproductive performance of the spawners. Collectively, this study showed that female livebearers bene¢t from inclusion of probiotics in diet during their reproductive stages.

Item Type:Article
Uncontrolled Keywords:probiotic; ornamental fish
Subjects:Fish and Fisheries > Fish physiology
Aquaculture > Ornamental Fishes
Divisions:CMFRI-Cochin > Physiology and Nutrition Pathology
ID Code:7423
Deposited On:10 Feb 2011 13:05
Last Modified:10 Feb 2011 14:30

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