Evaluation of Growth, Survival and Carcass Composition of Fish and Prawn in the Substrate Based Polyculture Farming

By : Aditi Rajan Patkar , Manjappa N , Harsha Nayak , Rajanna K. B.

Page No: 147-165

Abstract
A series of substrate based aquaculture systems have been developed to reduce the cost of finfish and shellfish farming. Periphyton acts as important food component for finfish and shellfishes. The present study is aimed to assess the growth and survival of fish (Labeo fimbriatus, Barbodes carnaticus) and shellfish (Macrobrachium rosenbergii) in a substrate based system for a period of 6 months. Sugarcane bagasse is used as a substrate for the growth of periphytons. The experiment was carried out in three treatments, T1 (only substrate), T2 (substrate + feed) and T0 (only feed/ control) with triplicates. The results of the study showed maximum average weight in T2 (L. fimbriatus 141.17 ± 0.66; B. carnaticus 98.07 ± 1.16 and M. rosenbergii 73.95 ± 0.73) compared with T1 and T0 and there is a significant difference (P<0.05) observed between the treatments, substrate showed significant effect the water quality parameters viz., pH (6.73–8.17), dissolved oxygen (6.70–8.50mg/L). Low concentration of Ammonia (0.068–0.140 mg/L) and Nitrite (0.046–0.082mg/L) was observed in substrate based ponds. The results of substrate based cultural system increased the protein content of the fish and prawn. The study revealed the relative advantage of using sugarcane bagasse in polyculture system for enhancement of health and growth of the fish with increasing the production.

Authors :
Aditi Rajan Patkar
Department of Aquaculture, College of Fisheries, Mangaluru, Karnataka Veterinary Animal and Fisheries Sciences University, Bidar, India.

Manjappa N
Fisheries Research & Information Centre (Inland), Hesaraghatta, Bengaluru, India, Karnataka, Veterinary Animal and Fisheries Sciences University, Bidar, India.

Harsha Nayak
Fisheries Research & Information Centre (Inland), Hesaraghatta, Bengaluru, India, Karnataka, Veterinary Animal and Fisheries Sciences University, Bidar, India.

Rajanna K. B.
Fisheries Research & Information Centre (Inland), Hebbal, Bengaluru, India, Karnataka, Veterinary Animal and Fisheries Sciences University, Bidar, India.
 

DOI: http://doi.org/10.32381/JAT.2021.36.1-4.13