The effect of different levels of soybean and canola meal on the growth and carcass composition of grass carp fingerling (Ctenopharyngodon idella)

Articles in Press

Document Type : Research Paper

Authors

1 Inland Waters Aquaculture Institute Iranian Fisheries Research Organization IFRO, 66 Anzali

2 Inland Waters Aquaculture Institute Iranian Fisheries Research Organization

3 University of guilan

4 ifro

5 Research and Technology Deputy of Iranian Fisheries Sciences Research Institute

6 Inland Waters Aquaculture Research Center Iranian Fisheries Sciences Research Institute

10.22124/janb.2025.29087.1262

Abstract

Introduction:Grass carpCtenopharyngodon idella is considered one of the most important farmed fish in the world. One of the important factors in the development of aquaculture is to provide a suitable ration that can meet the nutritional needs of this fish, and on the other hand, the ration should be as cheap as possible so by doing this research you can ultimately achieve cheaper food by optimizing the food ration. In this research, the effect of different levels of soybean meal and canola on growth parameters and carcass composition of fingerlings of Ctenopharyngodon idella with an average initial weight of 7.56 ± 1.12 grams were investigated for 60 days.
Materials and methods: Experiments in 100-liter fiber tanks containing 7 fish fingerlings of Ctenopharyngodon idella in 3 repetitions and a total of 9 experimental tanks of three treatments including treatment 1: a diet whose main food items contain 24.5% soybean meal, 24.5% canola meal, Treatment 2: the ration where the main food items are 29% Canola meal, 21% soybean meal and treatment 3: the diet where the main food items are 28% soybean meal, 20% canola were divided completely randomly.
Results and discussion:According to Duncan test, According to Duncan test difference was observed between the treatments in terms of the mean food conversion rate (FCR), specific growth rate (SGR), weight gain (WG) (P<0.05). The results obtained from the Kruskal-Wallis test did not show any significant difference in the biochemical composition of fingerlings of Ctenopharyngodon idella carcasses, including protein, fat, ash, and moisture among different treatments (P<0.05).
Conclusion: According to the obtained results, it seems that the diet with 28% soybean meal and 20% canola is the most suitable level of canola and soybean in the diet of fingerlings of Ctenopharyngodon idella.

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Aquatic Animals Nutrition

Articles in Press, Accepted Manuscript
Available Online from 28 October 2025

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