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The effects of dietary Betaplus ® and TechnoMos ® on growth performance, blood parameters, and intestinal microflora in juvenile kutum, Rutilus kutum (Kamensky, 1901)
Author(s) -
Amirkolaie A. K.,
Karimzadeh S.,
Miandehy S. P.
Publication year - 2017
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13322
Subject(s) - prebiotic , biology , probiotic , juvenile , zoology , food science , fish <actinopterygii> , bacillus subtilis , feed conversion ratio , white blood cell , fishery , endocrinology , bacteria , ecology , immunology , body weight , genetics
Summary The main goal of the current study was to assess the combined effects of a dietary probiotic Betaplus and prebiotic TechnoMos on growth performance, blood biochemical parameters, and intestinal microflora in juvenile Rutilus kutum . Four experimental diets were prepared with the addition of Betaplus and/or TechnoMos to a basal diet for R. kutum juveniles. The diets were randomly assigned to one of 12 tanks, with three replications per diet. The results showed that supplementation of both pro‐ and prebiotic, separately or in combination, improved fish growth parameters ( p < .05). These additives also reduced fish mortality rates, either alone or in combination ( p < .05). Protein content of the carcass increased by an addition of Betaplus ( p < .05), but Betaplus supplementation reduced the fat content of the carcass ( p < .05). Bacillus leicheniformis and B. subtilis counts were elevated by the addition of Betaplus and TechnoMos, with even a larger bacterial count observed in fish fed a mixed diet of pro‐ and prebiotics ( p < .05). White blood cell counts increased with both pro‐ and prebiotic supplementations. Glucose and cortisol levels significantly decreased with the administration of Betaplus and TechnoMos, and the mixed treatment showed the lowest estimate of these parameters ( p < .05). In conclusion, a better performance of juvenile R. kutum fed a diet mixture of Betaplus and TechnoMos is probably related to the elevation of Lactobacillus counts in the fish gut, which improves the digestive performance.