Growth and feeding performance of Rainbow trout (Oncorhynchus mykiss) alevin fed on diet contained fermented Daphnia magna with Bacillus probiotics

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Moradi Parisa; JAFARYAN HOJATOLLAH; SOLTANI MEHDI; GHOLIPOUR KANANI HOSNA; SAHANDI JAVAD

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Journal: Journal of Aquaculture Development Year:2020 | Volume:14 | Issue:3 Page(s): 127-137

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Title

Growth and feeding performance of Rainbow trout (Oncorhynchus mykiss) alevin fed on diet contained fermented Daphnia magna with Bacillus probiotics

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Keywords

BacillusQ1

FermentationQ1

AlevinQ2

GrowthQ2

FeedQ2

Rainbow troutQ2

Daphnia.Q2

Abstract

This study was carried out to evaluate the effects of different levels of fermented Daphnia.(Daphnia.magna) as a partial protein source of Rainbow trout (Oncorhynchus mykiss) Alevins’ diet and its effect on Growth; nutrition and Feed efficiency for 8 weeks. Rainbow trout Alevins with an initial body weight of 0. 583 ± 0. 197g (Mean ± SD) after acclimating to study condition were fed in 5 treatments each with 3 replicates based on completely randomized design. Four isonitrogenous experimental diets (52. 70% crude protein) including two diets contained fermented Daphnia.powder and two others contained raw Daphnia.powder with replacement levels of 20 and 30% were obtained. A diet without Daphnia.powder was used as control. Five Bacillus strains including: B. subtilis, B. licheniformis, B. polymyxa, B. circulans and B. laterosporus were used for fermenting of Daphnia.powder. The results showed the significant effect of fermented Daphnia.powder on Growth and Feed efficiency in comparison with diet contained raw Daphnia.powder with the same levels (P<0. 05). Also the treatments fed with the same levels of fermented Daphnia.had the lowest Feed conversion ratio than the other treatments and the control (P<0. 05). The use of Bacillus strains which are able to secret extracellular enzymes and spread with producing spores in addition of fermenting of Daphnia.powder would be able to inoculate into the Alevin gut. This issue while it’ s improving nutrients of Daphnia.powder would increase micro flora of Alevins and finally increase the Growth.

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APA: Copy

Moradi, Parisa, JAFARYAN, HOJATOLLAH, SOLTANI, MEHDI, GHOLIPOUR KANANI, HOSNA, & SAHANDI, JAVAD. (2020). Growth and feeding performance of Rainbow trout (Oncorhynchus mykiss) alevin fed on diet contained fermented Daphnia magna with Bacillus probiotics. JOURNAL OF AQUACULTURE DEVELOPMENT, 14(3 ), 127-137. SID. https://sid.ir/paper/398375/en

Vancouver: Copy

Moradi Parisa, JAFARYAN HOJATOLLAH, SOLTANI MEHDI, GHOLIPOUR KANANI HOSNA, SAHANDI JAVAD. Growth and feeding performance of Rainbow trout (Oncorhynchus mykiss) alevin fed on diet contained fermented Daphnia magna with Bacillus probiotics. JOURNAL OF AQUACULTURE DEVELOPMENT[Internet]. 2020;14(3 ):127-137. Available from: https://sid.ir/paper/398375/en

IEEE: Copy

Parisa Moradi, HOJATOLLAH JAFARYAN, MEHDI SOLTANI, HOSNA GHOLIPOUR KANANI, and JAVAD SAHANDI, “Growth and feeding performance of Rainbow trout (Oncorhynchus mykiss) alevin fed on diet contained fermented Daphnia magna with Bacillus probiotics,” JOURNAL OF AQUACULTURE DEVELOPMENT, vol. 14, no. 3 , pp. 127–137, 2020, [Online]. Available: https://sid.ir/paper/398375/en

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