Effects of stocking density on growth performance of common carp (Cyprinus carpio) juveniles reared in earthen ponds

Sadiq Muhammed

Authors

Muhammed et al., 2025 Aquaculture Unit, College of Agriculture, University of Basrah

Keywords:

Fish density, Feed conversion, Growth rates, Condition factor

Abstract

Current experiment was conducted in nine earthen ponds (900 m3) filled with water at 1/8/2023 and fertilized with 250 kg of buffalo wastes. A total of 600 juveniles of common carp were released in ponds 1-3 at average weight of 2.3 g (T1). A total of 1200 juveniles of common carp were released in ponds 4-6 at average weight of 1.3 g (T2). A total of 2400 juveniles of common carp were released in ponds 6-9 at average weight of 1.3 g (T3). All juveniles were released on August 9, 2023 and fed on sinking diet at feeding ratio of 6% of total fish weight. The feeding ratio was reduced to 4% on September 25, 2003. The results of current experiment revealed significant differences (P≤0.05) in growth criteria for the three treatments, where the best results were observed in low stocking density. Growth pattern was fishes exhibited positive allometric growth of the three treatments, where b values were 3.2902, 3.5958 and 3.8619 for T1, T2 and T3 respectively. Statistical analysis of the results for feed conversion rate showed that there were significant differences (P≤0.05) betweenT1 and T3, while there were no significant differences (P>0.05) between T2 with T1 and T3.

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References

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