0.05). The highest and lowest solubility were obtained at pH 2 and pH 6, respectively. The water and oil holding capacity of recycled protein was 0.45 and 0.4 ml/g, respectively. The highest emulsion activity was observed at pH 10 and the highest foam formation capacity at pH 2. The highest emulsion stability was observed at pH 2 and the highest foam stability was observed at pH 2 and 10. Recycled protein showed good functional properties and changed with pH, but not all properties followed a specific trend.]]>
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0.05). The results of hematology indices, WBC, RBC, Ht, Hb, MCV, MCH and MCHC increased significantly with an increase in the density of fish larvae among the experimental treatments and their highest levels were obtained in treatment with a density of 75 fish per 10 liters. The serum glucose levels increased significantly while the fish density increased and it was higher in 60 and 75 fish per 10 liters treatments compared to 30 and 45 fish in 10 liters densities. Overall, the findings of this study showed that despite the effects of fish density, the use of probiotic bacilli also affecting on some growth, nutritional and blood indices.]]>
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< 0.05). Among different antioxidant indices, higher total antioxidant activity was observed in the treatment group fed fed the diets containing 1.5% black cumin oil (p < /em> < 0.05), but lipid peroxidation product, indicated by MDA, was not altered compared to the control group. Meanwhile, activities of some antioxidant enzymes, including superoxide dismutase and catalase in both treatment groups and glutathione S-transferase in group fed fed the diets containing 1.5% black cumin oil were higher compared to the control group (p < /em> < 0.05). During this experiment, higher protein level was also recorded in the treatment groups (p < /em> < 0.05), but no significant changes were noted in alanine aminotransferase level in comparison with the control group. Feeding with black cumin oil also led to a significant increase in amylase and acid phosphatase activities (p < /em> < 0.05), whereas no significant changes were noted in lipase and protease activities. Therefore, the results show that the administration of black cumin oil, especially at 1.5%, had the potential to improve the growth rate, some antioxidant indices, as well as digestive enzyme activities in electric yellow cichlid.]]>
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