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Abstract

We examined the effects of different dietary levels of ascorbic acid (vitamin C) and α-tocopherol (vitamin E) and their combinations on growth, survival; and some haematological and immunological parameters of Caspian brown trout, Salmo trutta caspius juveniles. The experiment was designed as 15 experimental treatments and one control group. 480 fish (35±5.5 g) were fed by experimental diets containing different levels of Vit C and E and control diet separately for a period of 2 months. According to the results, Vit C and E improved survival and growth parameters including specific growth rate (SGR), percent weight gain (WG) and biomass. The highest values of these parameters obtained in T8 ) + Vit C (300 mg.kg -1 ) and T9 (Vit E (40 mg.kg -1 ) + Vit C (300 mg.kg -1 ). The lowest FCR obtained in T8. The haematological parameters including red blood cells (RBCs), white blood cells (WBCs), haematocrit (%Hct) and haemoglobin (Hb) were higher in vitamin treated groups than control group with highest values in T8. In T13 ), WBC values were higher compared to other experimental groups. The immunological parameters (lysozyme activity, Immunoglobulin (IgM) and total immunoglobulin (TIg)) were found to be higher in vitamin supplemented groups than in control group with highest values in T12 (Vit C (300 mg.kg-1). In conclusion, our results show that a combination of 30 mg.kg diet -1 Vit E+ 300 mg.kg -1 Vit C or 40 mg.kg -1 Vit E + 300 mg.kg -1 Vit C could be a good option for obtaining appropriate growth and survival in Caspian brown trout juveniles.Caspian brown trout.

Mitigation Effects of Vitamin C and E Against Copper Toxicity in Broiler Chickens, With Reference to Biochemical, Genotoxicity and Pathological Studies

“…The growth parameters were upgraded meaningfully in Cu+ Vit C and Cu+ Vit E-supplemented groups compared to Cu-intoxicated group, however, better results have been found in birds-taken both Vit C and Vit E (gp.5). Many reports showed better performance with feeding of Vit C or Vit E to broiler chicks (Cinar et al 2014;Abduljaleel 2016;Zhu et al, 2019) or sh (Hossein et al 2016; Azeez and Braimah 2020). The improvements in performance characteristics in vitamins-supplemented groups could be attributable to their antioxidant effects that protect the bird from the oxidative stress produced by exposure to Cu (Gao 2010;Selim 2013), or owing to the role of vitamins as an immune stimulant (Franchini et al 1991).…”