University of Guilan Aquatic Animals Nutrition 2980-8499 1 2 2015 09 23 The effect of blend of isolated bacillus and Saccharomyces cerevisiae from gut of Beluga (Huso huso) on growth and feeding parameters of silver carp (Hypophthalmichthys molitrix) larvae The effect of blend of isolated bacillus and Saccharomyces cerevisiae from gut of Beluga (Huso huso) on growth and feeding parameters of silver carp (Hypophthalmichthys molitrix) larvae 13 24 149 FA Hojatollah Jafarian Faculty of Agriculture and Natural Resources, University of Gonbad Kavoos, Gonbad, Golestan, Iran Kheiroallah Khosravi Faculty of Agriculture and Natural Resources, University of Gonbad Kavoos, Gonbad, Golestan, Iran Dariush Abdollahi Faculty of Agriculture and Natural Resources, University of Gonbad Kavoos, Gonbad, Golestan, Iran Sajad Tavana Faculty of Agriculture and Natural Resources, University of Gonbad Kavoos, Gonbad, Golestan, Iran Journal Article 2015 04 14 A 33-day feeding experiment was conducted to assess the effects of supplemented diets with sturgeon intestinal bacteria as probiotics in feeding of silver carp (<em>Hypophthalmichthys molitrix</em>) larvaewith average weight 200 ± 10 mg. These probiotics were isolated from gut of ten healthy fingerlings of Beluga (<em>Huso huso</em>) with average weight of (5.51 ± 0.31 g). Four diets (S1, S2, S3 and S4) were prepared containing similar ingredient composition and were supplemented with blend of three probiotics (<em>Bacillus licheniformis</em>, <em>Bacillus subtilis</em> and yeast of <em>Saccharomyces cerevisiae</em>) at four different levels (0, 1.5×10⁶, 3×10⁶, 4.5×10⁶ cells per 100 g of diet, respectively). At the end of experiment, the Silver carp larvae fed probiotic supplemented diet had an improved and growth feeding performance compared to fish larvae not fed probiotics. Rearing of silver carp with feeding by experimental diets of, S2 and S3 (3×10⁶ and 4.5×10⁶ cells 100 g) resulted in better growth and feeding parameters in compared with the control. These probiotics resulted in a significant increase (P<0.05) in specific growth rate and food conversion efficiency of fish larvae in experimental treatments. Therefore the tested microorganisms in this study had tremendous potential as probiotic for commercially produced of silver carp larvae. A 33-day feeding experiment was conducted to assess the effects of supplemented diets with sturgeon intestinal bacteria as probiotics in feeding of silver carp (<em>Hypophthalmichthys molitrix</em>) larvaewith average weight 200 ± 10 mg. These probiotics were isolated from gut of ten healthy fingerlings of Beluga (<em>Huso huso</em>) with average weight of (5.51 ± 0.31 g). Four diets (S1, S2, S3 and S4) were prepared containing similar ingredient composition and were supplemented with blend of three probiotics (<em>Bacillus licheniformis</em>, <em>Bacillus subtilis</em> and yeast of <em>Saccharomyces cerevisiae</em>) at four different levels (0, 1.5×10⁶, 3×10⁶, 4.5×10⁶ cells per 100 g of diet, respectively). At the end of experiment, the Silver carp larvae fed probiotic supplemented diet had an improved and growth feeding performance compared to fish larvae not fed probiotics. Rearing of silver carp with feeding by experimental diets of, S2 and S3 (3×10⁶ and 4.5×10⁶ cells 100 g) resulted in better growth and feeding parameters in compared with the control. These probiotics resulted in a significant increase (P<0.05) in specific growth rate and food conversion efficiency of fish larvae in experimental treatments. Therefore the tested microorganisms in this study had tremendous potential as probiotic for commercially produced of silver carp larvae. https://janb.guilan.ac.ir/article_149_9fab058c40637c5237e38fe7e500644d.pdf