نوع مقاله : مقاله پژوهشی
نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In the present experiment, the effect of a mixture of microcoated supplements of selenium nanoparticles (particle size 30 nm) (Pishgaman Nanomavad Company, Khorasan), vitamins C and E (0.1, 30, and 100 mg/kg: A diet), (0.2, 60, and 200 mg/kg: B diet), (0.3, 90, and 300 mg/kg: C diet) and a control diet (no supplement: D diet) on growth indices, feed efficiency, immune system, and liver enzymes of 120 beluga with an average initial weight of 77.34±1.38 g grown in fiberglass tanks (supplied with a mixture of well and river water) in the form of 4 treatments (each with 3 replications) for 10 weeks were investigated. The fish were fed at 2% of body weight 3 times a day. At the end of the experiment, final weight (5%), body weight gain percentage (3.84%), specific growth rate (1.89 %/day) and daily growth (6.23%) in the fish fed with B diet were significantly higher than the control diet (P<0.05). The activity of aspartate aminotransferase (SGOT) and alanine aminotransferase (SGPT) serum enzymes was higher than the fish fed with the control diet. (P<0.05). significant difference was not observed in serum total immunoglobulin (Ig) fish fed diets B, C and control (P>0.05), but serum ACH50 in fish fed control was significantly higher than diets A and B (P<0.05) , also there was no significant difference in serum lysozyme in control, A and B treatments (P>0.05). The results of this study showed that adding 0.2, 60, and 200 mg/kg selenium nanoparticles, vitamins C and E to the commercial diet could significantly increase of final weight and growth indices, but more studies should be done on the effect of microcoated selenium nanoparticles on liver performance and biochemical indices of this species.
کلیدواژهها [English]
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