Probiotic effects of Bacillus spp. bacteria on the survival and growth of white shrimp (Litopenaeus vannamei) in 30 and 40 g/lit salinities
The probiotic effects of Bacillus spp. bacteria on the growth and survival rate of Litopenaeus vannamei in 30 and 40 g, salinities was investigated. We conducted the experiment in Bandargah Research Station, Bushehr province during 45 days. Four treatments with three replicates, and two controls were used and probiotic powder, dissolved in water along with the growth stage pellet was applied in 3O ppt and 4O ppt salinities. The control treatments were only fed by the growth stage pellet in 3O ppt and 4O ppt salinities. The results revealed that growth and survival rate of treatment groups in 3O ppt salinity exposed to the probiotic powder were higher than those of the controls without increasing probiotic powder (P<0.05). Although the growth rate of treatment groups in 4O ppt salinity was higher than those of the control without increasing probiotic powder in 4O ppt salinity, but there was no significant difference between the two (P>0.05). Survival rate of the treatment groups in 4O ppt salinity was significantly higher than those of the control (P<0.05). Also, the results indicated that growth and survival factors of the treatment groups in 3O ppt salinity in comparison with those of the control in 4O ppt salinity were significantly higher. We conclude that addition of Bacillus spp. bacteria to 3O ppt salinity together with application of growth stage pellets to white shrimp, Litopenaeus vannaiiiei, could be very useful in comparison with 4O ppt salinity. The results of this study were obtained through ANOVA and LSD tests.
| Main Authors: | , , , , , |
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| Format: | article biblioteca |
| Language: | Persian |
| Published: |
2008
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| Subjects: | Aquaculture, Health, Growth rate, Salinity effects, Survival, Marine, Shrimp culture, Litopenaeus vannamei, Bacillus, Bushehr Province, Iran, |
| Online Access: | http://hdl.handle.net/1834/38428 |
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