Paper Details

Increases resistance of convict cichlid (Amatitlania nigrofasciata) to environmental stress by spirulina powder

Khorshid Ghorbani-Jezeh, Hamid Mohammadiazarm, Hadideh Mabudi

DOI: https://dx.doi.org/10.12692/ijb/5.8.128-134

Int. J. Biosci. 5(8), 128-134. October, 2014. (PDF)

Abstract:

In recent decades, interest in using micro algae powders as growth promoters and immune stimulants in aquaculture has been increased. This study evaluated the effect of diets containing 0, 25, 50, 75 and 100 g kg-1Spirulina powder on increasing resistance of Convict cichlid (Amatitlania nigrofasciata) to environmental stress. To order this, 375 fish by initial average weight of 1.20±0.025 g were distributed in a completelyrandomized design with five treatments and three replications for 8 weeks. The fish were fed four times a day. Atthe end of experiment, 7 fish from each tank were exposed with shortage of oxygen for 24 hours. Also, for assessment the survival of fish to challenge with density, the fish were hold in 500 cc container without aerationfor 5 days. The results showed that spirulina powder increases survival rate of fish after encounteringenvironmental stress. Therefore, to improve resistance of Convict cichlid, against stressful conditions, spirulina