علوم زیستی دریا
Adel Ghabtani; Seyed Mohammad Mousavi; Annahita Rezaie; Mohammad Zakeri; Isac Zamani
Abstract
The purpose of this study was to evaluate the effects of three commercial probiotics (Bio-Aqua®, Bio-Aqua pond®, and Multi Behsil 100) on the growth, nutrition, and biochemical parameters of common carp fingerlings. For this purpose, 210 common carp fingerlings (with a mean weight: 9.6±0.02 ...
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The purpose of this study was to evaluate the effects of three commercial probiotics (Bio-Aqua®, Bio-Aqua pond®, and Multi Behsil 100) on the growth, nutrition, and biochemical parameters of common carp fingerlings. For this purpose, 210 common carp fingerlings (with a mean weight: 9.6±0.02 g and mean length: 12.9±0.32 cm) were randomly divided into 7 treatments (treatment 1 (control): basic diet without probiotics, treatment 2: 0.2 g of Bio-Aqua®, treatment 3: 0.1 g of Bio-Aqua®, treatment 4: 0.002 g/L of Bio-Aqua pond® dissolved in tank water, treatment 5: 0.001 g/L Bio-Aqua pond ® dissolved in tank water, treatment 6: 0.2 g of Multi Behsil 100, and treatment 7: 0.1 g of probiotic Multi Behsil 100) in triplicates, and 10 fish in each replicate. The commercial probiotics were added to the commercial diet, and the fish were fed based on body weight percentage for 60 days. Based on the results, the use of probiotics Bio-Aqua® and MultiBehsil 100, caused positive effects on the growth and nutrition parameters of common carp, although the use of 0.1 g of Bio-Aqua® per kilogram of the diet of common carp led to an improvement in growth, although, increasing the amount of this probiotic at the level of 0.2 g/kg led to negative effects on growth performance. The use of Multibehsil 100, caused positive effects on common carp. Thus, the best effect on growth performance and body composition was seen in the diet containing MultiBehsil 100 (0.1 and 0.2 g/kg of basic diet). Therefore, it can be concluded that the use of MultiBehsil 100 and Bio-Aqua® have favorable effects on common carp.
علوم زیستی دریا
Razieh Nasrolahzadeh; Alireza Safahieh; Hossein Zolgharnein; Issac Zamani; Kamal Ghanemi
Abstract
Bisphenol-A (BPA) is one of the most important endocrine disrupters that has arrived to the environment, because of this reason, it has been developed into a detrimental material for human beings and other organisams. There are several ways for degradation or removal of industrial pollutants, ...
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Bisphenol-A (BPA) is one of the most important endocrine disrupters that has arrived to the environment, because of this reason, it has been developed into a detrimental material for human beings and other organisams. There are several ways for degradation or removal of industrial pollutants, in which the bacterial communities plays a major role in the biodegradation of BPA in the environment.In this study, contaminated sediments were collected in Mousa Creek. The isolates were identified by biochemical tests and 16S rRNA gene sequence analysis. The isolated Bacteri was Pseudomonas putida. Growth and degradation ability of isolated baccteri was measured in 100, 200 and 300 ppm of BPA in 24-hour intervals for 6 days. Bacterial growth rate was detected with spectrophotometer at 600 nm. Efficiency of BPA degradation was performed by Liquid-liquid extraction method and measured by HPLC. This bacteri was able to grow at concentrations of 100, 200 and 300 ppm of BPA. So, the biodegradation results from mineral salt medium (MSM) indicated that Pseudomonas putida have the best degradation efficiency at the 200 ppm of the BPA. Biodegredation result by HPLC method show that the percentage of the degradation efficiency at the 200 ppm was 82.8 percent.These results demonstrated this indigenous bacteria (Pseudomonas putida) can be used to improve the bacterial communities contaminated by Bisphenol A and to eliminate the pollutants from the costal environment.