STUDY ON NITROBACT PROBIOTIC PRODUCTION APPLYING IN SHRIMP AQUACULTURE IN THUATHIENHUE PROVINCE

Abstract

Recently, probiotic products have received great interests of aquaculture industry due to its safety for cultured species and environment of farming areas. However, the expenditure for application of prohiotic, about 6 milions VNDlhaJcrop is still rather high to shrimp farmers. Using native pro biotic bacteria for aquaculture is not only cost effective but also helps maintaining microbial communities of shrimp farming areas and protecting the environment. We selected several native bacteria from shrimp ponds and marine water in coastal zone, capable of inhibiting pathogenic bacteria Vibrio, oxidizing ammonia/nitrite or reducing nitrate to form Nitrobact-l and Nitrobact-2 probiotics. Comparison of our new probiotics with Microzyme and Bio-bacter probiotics having main components similar to our probiotics, in 2.5 ha shrimp farm in Quangdien district, Thuathienhue province. Applying the new probiotic is half price lower and gives higher productivity in comparison with other probiotics.