University of Guilan Aquatic Animals Nutrition 2980-8499 6 1 2020 03 20 Effects of dietary specific probiotics on some growth and immunity indices, hepatic enzymes and intestinal bacterial flora of reared Persian sturgeon Acipenser persicus fingerlings Effects of dietary specific probiotics on some growth and immunity indices, hepatic enzymes and intestinal bacterial flora of reared Persian sturgeon Acipenser persicus fingerlings 71 85 4584 10.22124/janb.2021.18074.1113 FA Rezvanollah Kazemi International Sturgeon Research Institute, Agricultural Research Education and Extension Organization (AREEO), Rasht, Guilan, Iran Mahtab Yarmohammadi International Sturgeon Research Institute, Agricultural Research Education and Extension Organization (AREEO), Rasht, Guilan, Iran Alireza Shenavar Masouleh International Sturgeon Research Institute, Agricultural Research Education and Extension Organization (AREEO), Rasht, Guilan, Iran Ali Hallajian International Sturgeon Research Institute, Agricultural Research Education and Extension Organization (AREEO), Rasht, Guilan, Iran Babak Tizkar Aquaculture Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Guilan, Iran Hooshang Yegane Aquaculture Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Guilan, Iran Jalil Jalilpoor Aquaculture Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Guilan, Iran Mehdi Alizadeh Aquaculture Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Guilan, Iran Journal Article 2019 10 03 This study was carried out to increase production efficiency of Persian sturgeon Acipenser persicus fingerlings. In this experiment, 600 pieces of Persian sturgeonfingerlings (10.76 ± 0.74 g in weight and 14.49 ± 0.7 cm in total length) in four treatments were introduced into twelve fiberglass tanks with 300-L water capacity for 60 days. The treatments were fed with diets containing 0, 150, 300 and 450 mg of four bacterial strains including Lactococcus lactis, Pediococcus pentosaceus, Weissella cibaria and Enterococcus faecalis powder per kg pelleted diets to make certain concentrations including 0 (T1), 1.5 × 109 (T2), 3 × 109 (T3) and 4.5 × 109 CFU/g (T4). The results showed that there was no significant difference in growth indices in different treatments (p>0.05). However, the maximum and minimum mean final weights were observed in T2 and T1, respectively. The minimum and maximum values of liver enzymatic indices, LDH, IgM, lysozyme activity and the number of colonial intestine bacterial flora were observed in T2 and T1, respectively, significantly different from the other treatments (p<0.05). The maximum and minimum number of intestinal lactic acid (probiotic) bacteria were also found in T2 and T4, respectively, significantly different from the others (p<0.05). In spite of the fact that a probiotic-supplemented diet could not exhibit a significant effect on growth indices of the Persian sturgeon fingerlings at the weight range of 10-60 g, however, those containing 1.5 × 109 CFU/g (T2), significantly enhanced the immunity, enzymatic and bacterial flora of the intestine. This study was carried out to increase production efficiency of Persian sturgeon Acipenser persicus fingerlings. In this experiment, 600 pieces of Persian sturgeonfingerlings (10.76 ± 0.74 g in weight and 14.49 ± 0.7 cm in total length) in four treatments were introduced into twelve fiberglass tanks with 300-L water capacity for 60 days. The treatments were fed with diets containing 0, 150, 300 and 450 mg of four bacterial strains including Lactococcus lactis, Pediococcus pentosaceus, Weissella cibaria and Enterococcus faecalis powder per kg pelleted diets to make certain concentrations including 0 (T1), 1.5 × 109 (T2), 3 × 109 (T3) and 4.5 × 109 CFU/g (T4). The results showed that there was no significant difference in growth indices in different treatments (p>0.05). However, the maximum and minimum mean final weights were observed in T2 and T1, respectively. The minimum and maximum values of liver enzymatic indices, LDH, IgM, lysozyme activity and the number of colonial intestine bacterial flora were observed in T2 and T1, respectively, significantly different from the other treatments (p<0.05). The maximum and minimum number of intestinal lactic acid (probiotic) bacteria were also found in T2 and T4, respectively, significantly different from the others (p<0.05). In spite of the fact that a probiotic-supplemented diet could not exhibit a significant effect on growth indices of the Persian sturgeon fingerlings at the weight range of 10-60 g, however, those containing 1.5 × 109 CFU/g (T2), significantly enhanced the immunity, enzymatic and bacterial flora of the intestine.

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