Effect of Bacillus subtilis on the growth and survival rate of shrimp (Litopenaeus vannamei)

Autor: Far, HZ, Saad, CRB, Daud, HM, Harmin, SA, Shakibazadeh, S
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: African Journal of Biotechnology; Vol 8, No 14 (2009)
ISSN: 1684-5315
Popis: The effect ofBacillus subtilis, isolated from digestive tract of Macrobrachium rosenbergii was investigated on growth and survival rate of Litopenaeus vannamei during 60 days of culture. Sixteen aquaria with four replicates were used for treatments and controls. Treatment groups were consisted of Bacillus subtilis, isolated from digestive tract of Macrobrachium rosenbergii was investigated on growth and survival rate of Litopenaeus vannamei during 60 days of culture. Sixteen aquaria with four replicates were used for treatments and controls. Treatment groups were consisted of Bacillus subtilis, isolated from digestive tract of Macrobrachium rosenbergii was investigated on growth and survival rate of Litopenaeus vannamei during 60 days of culture. Sixteen aquaria with four replicates were used for treatments and controls. Treatment groups were consisted of ) shrimp fed diet with B. subtilis (T1), and ii) shrimp fed diet mixed with B. subtilis and commercial probiotic (T2). Control groups were consisted of ) shrimp fed diet with commercial probiotic as positive control, and ii) shrimp fed unaltered diet as negative control. Results showed that B. subtilis was proliferated in digestive tract of treated shrimps, and the number of Vibrio spp. was reduced in digestive tract during the cultural period. Survival rate, 75.5± 4.62 %, and yields of shrimps, 190.00 ±13.13 g, treated with B. subtilis were significantly greater (P
Databáze: OpenAIRE