Effect of different levels of choline chloride on intestinal bacterial flora in rainbow trout (Oncorhynchus mykiss) fry

Hajibeglou, Ali; Mokhmi, Abdolrahman; Hajimoradlou, Abdolmajid; Rahmani, Hossein

doi:10.22124/janb.2023.24805.1209

Effect of different levels of choline chloride on intestinal bacterial flora in rainbow trout (Oncorhynchus mykiss) fry

Document Type : Research Paper

Authors

¹ Department of Aquaculture, Faculty of Fisheries and Environmental Sciences, University of Agricultural Sciences and Natural Resources, Gorgan, Golestan, Iran

² Part Pishsaz Poya Company, Aq-Qala County, Golestan, Iran

10.22124/janb.2023.24805.1209

Abstract

The present study was designed and conducted to investigate the effects of varying levels of choline chloride on the microbial flora of the rainbow trout, Oncorhynchus mykiss fry. A total of 750 fish were fed with diets containing 0 (control), 250 (Cho₂₅₀), 500 (Cho₅₀₀), 1000 (Cho₁₀₀₀), and 2000 (Cho₂₀₀₀) mg of choline chloride per kg of feed for 90 days. The required feed was obtained from the 21 Bayza Company. The amount of microbial flora and final weight was significantly higher in the Cho₁₀₀₀ and Cho₂₀₀₀ than in the control group. The addition of choline to the diet effectively improved the microbial flora. The most suitable amount of choline chloride was between 1000 and 2000 mg/kg in the diet of rainbow trout.

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