Effect of Performance of Isolated Sturgeon Gut Bacillus (Huso huso) on Survival and Body Extract on Common Carp (Cyprinus carpio) larvae

Subject Areas : Breeding and Aquaculture Sciences Journal

Mohsen pourabbasali ¹ , Mitra Esmaeili ² , Shayan Ghobadi ³ , hojatollah jafariyan ⁴ , Mohammad Gholizadeh ⁵

1 - بابل
2 - بابل
3 - واحد بابل
4 - گنبد
5 - گنبد

Received: 2017-05-02 Accepted : 2017-05-02 Published : 2017-05-02

Keywords:

Abstract :

      Three blends of probiotic bacteria including yeast and bacillus, (Bacillus subtilis, Bacillus lichenifirmis and Saccharomyces cerevisiae) isolated sturgeon gut bacillus were supplemented with experimental diets in three levels (1.56× 10,  3× 106 and 4.5×  106 CFU/liter) and were fed by common carp (Cyprinus carpio) larvae in 3 experimental treatments. The control treatment was fed on non-supplemented diet. The experiment was carried out in completely random design. The rate of feeding was on the base of the 5-6 percent of their body weight for 3 times a day. At the end of the period (35 days) group of fishes were body extracted and other group tested by thermal (40°C), NH3 (5 mg/l ), alkalinity (12) and acidity (2) pH stress. In challenge test of thermal stress, maximum of survival time was obtained in treatment 1.5  ×  106 CFU/liter. The results of the challenge tests with stress of acidity and NH3 indicated that total experimental treatments had significant difference with control (p<0.05).but test stress alkalinity no significant difference between the treatments with control (p>0.05) the result of  body extract  indicate that in the amount K, Ca, Na no significant difference in body extract observed between the treatments (p>0.05) but between treatment 4.5× 106 in the mount fasting blood sugar had significant difference with control (p<0.05). also Kortizol amount in treatment 3×106 had significant difference with control (p<0.05). results indicated that the survival time in some of challenge tests with stress were correlated to probiotic bacteria.