Effect of different Dietary Sources on the Rearing of Amur Carp (Cyprinus carpio haematopterus)

Author: Sudha Shahi, Gajender Singh, Pragya Mehta and Tejpal Dahiya

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Abstract

Different feeds were incorporated into the diet on the rearing of Cyprinus carpio haematopterus fry for three months as a suitable alternative to reduce the heavy mortality and in acceptability of food. It included T1 (live feed), T2 (live + formulated feed), T3 (formulated feed) and T0 (commercial feed) as a control treatment. 180 fry with initial weight (0.25 gm) and length (2.08 cm) were recorded and divided into 12 groups with 15 fries in each treatment tank. The study showed that all the growth parameters were found significantly (p<0.05) increasing throughout the experiment period. The growth of fish was observed at maximum in T2 treatment and the minimum in control treatment T0. The maximum weight and length were observed in T2 treatment i.e. (5.31±0.01) gm and (5.25 ±0.02) cm, and minimum weight and length were observed in control treatment T0 i.e. (3.37±0.04) gm and (3.10± 0.10) cm. The FCR of (1.30±0.05) was found best in treatment T2. Physico-chemical parameters (DO, pH, electrical conductivity, total alkalinity, total hardness, calcium, magnesium, chloride, and ammonia concentration) were monitored fortnightly throughout the experiment. Maximum survivability was observed of (86.67±3.84) % in treatment T2 and minimum survivability of (77.78±2.20) % and the highest mortality were observed in treatment T3. The experiment's result depicted that incorporating a mixed diet of T2 completes the nutrient requirement for the Cyprinus carpio haematopterus fry rearing. It showed that the diet containing both enriched live feed and formulated feed contains all essential nutrients and most acceptable feed at fry stage of fish gave the best results throughout the experiment.

Keywords

Live feed, fry, water quality, growth, rearing, FCR

Conclusion

The present study showed that the diet containing both enriched live feed and formulated feed contains all essential nutrients and most acceptable feed at fry stage of fish gave the best results throughout the experiment. Zooplanktons such as rotifers, cladocerans, and copepods are the potential fish food organisms that should be used in larval rearing. The live feed incorporation in the initial life stages of fish enhances gut flora and enhance digestibility and FCR of fish fry. Due to the higher risk of mortality in the larval stage, proper care, nutrition, and maintenance protocols should be followed throughout the culture period. Moreover, the water quality parameters should be maintained as the slight environmental stress may risk a large number of fry. Based on investigated findings of the present study, it concluded that if Amur carp is cultured on a large scale, a high profit will be obtained, significantly augmenting monospecies rearing and production. The present study will benefit aquaculturists by reducing the risk of mortality at larval rearing stage and increasing output of total fish production. In this way, food crisis can be combat and food security may be ensured through high-potential food sources across the globe.

References

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How to cite this article

Sudha Shahi, Gajender Singh, Pragya Mehta and Tejpal Dahiya (2022). Effect of different Dietary Sources on the Rearing of Amur Carp (Cyprinus carpio haemopterus). Biological Forum – An International Journal, 14(4): 889-894.