1- Lahijan Islamic Azad University 2- Faculty of Natural Resources, University of Guilan 3- University of Agricultural Sciences and Natural Resources
Abstract: (730 Views)
In this study, the effects of cobalt chloride (CoCl2) with two levels of 2 and 4 mg/kg and vitamin C with two levels of 200 and 800 mg/kg diet and their combined levels in 9 treatments and each treatment with 3 repelications on 270 Siberiansturgeon (Acipenser baerii) with an initial average weightof 11.51±0.29 g were evaluated for 12 weeks.Based on the results, the mean final weight and length of the fish in 4 mg/kg CoCl2 were significantly higher than the control group (p<0.05).There was no significant difference in the weight gain, body weight gain and food conversion ratio between the treatments and the control group (p>0.05).The results of blood and biochemical indices showed that the highest number of red and white blood cells was observed in the treatments of 2 mg/kg CoCl2+200 and 800 mg/kg vitamin C, respectively.The highest percentage of neutrophils was observed in 800 mg/kg vitamin C treatment, which showed a significant difference with treatments 2 CoCl2,800 C+4 CoCl2,800 C+2 CoCl2,200 C+4 CoCl2and control (p<0.05).There was a significant difference in the percentage of lymphocytes in 800 mg/kg vitamin C and 800 mg/kg vitamin C + 2 mg/kg CoCl2 treatments compared to the control group (p<0.05).The lowest percentage of monocytes was in the control group (p<0.05).The highest percentage of eosinophils was found in 800 mg/kg vitamin C and 800 mg/kg vitamin C + 2 mg/kg CoCl2 treatments compared to the control group and other treatments (p<0.05).The highest amount of triglyceride and cholesterol was observed in the concentrations of 200 mg/kg vitamin C+4 mg/kg CoCl2 and 4 mg/kg CoCl2, respectively (p<0.05).The results showed that the use of vitamin C and cobalt chloride separately and in combination in the desired weight range had significant effects on growth parameters during the culture period.The effect of vitamin C on some growth and blood indices was higher compared to cobalt chloride.The positive effects of combined treatments were more than individual treatments in most indices.Finally, the diet containing 200 mg/kg vitamin C+4 mg/kg CoCl2 was considered suitable for growthof juvenile Siberian sturgeon.
Roudbaraki S M, ErshadLangroudi H, Zamini A, Falahatkar B, Safari R. Effects of dietary cobalt chloride and vitamin C on growth performance, some hematological and biochemical indices in Siberian sturgeon (Acipenser baerii). isfj 2023; 32 (5) :95-111 URL: http://isfj.ir/article-1-2753-en.html
با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است