Nutritional effects of Aloe vera extract on growth performance, survival rate and lactic acid bacterial of intestine in freshwater sturgeon (Acipenser baerii)

This study investigated Nutritional effects of Aloe vera extract on growth performance, survival rate and lactic acid bacterial of intestine in freshwater sturgeon (Acipenser baerii). This fish has the ability to hold in large aquarium environments. In this study a total of 360 numbers of Siberian sturgeon weighted average10.95 ± 0.04(g) randomly distributed in four treatments including a control group and three experimental groups (each with three replications) were used. So, Aloe Vera extract powder ratio of 0.5%, 1% and 1.5% were added to the food. After eight weeks of feeding in the fiberglass vans and physicochemical parameters of water daily registration, biometry carried out and necessary samples collected. In this study, growth indicators such as weight gain, initial body weight, condition factor, feed conversion ratio, specific growth rate, protein efficiency ratio and survival rate were calculated. Results showed that all growth parameters in the treatments compared to the control group showed statistically significant differences as a significant difference between the control group treated 1.5% extract were observed (P<0.05). Meanwhile, significant increase in the count of anaerobic bacteria (lactic acid bacteria) were observed compared to the control group (p<0.05). The result showed that Aloe vera extract can be effective in improving the growth performance of Siberian sturgeon.