Impact of feeding strategies on the growth and nutrient discharge in the polyculture of carps using farm ponds

Pawan Kumar Sharma; John Stephen   Sampath Kumar; D  MANIKANDAVELU

doi:10.56093/ijans.v92i5.114995

Authors

Pawan Kumar Sharma Department of Fisheries Ministry of Fisheries, Animal Husbandry and Dairying, Govt. of India
John Stephen Sampath Kumar Directorate of Sustainable Aquaculture, Tamil Nadu Dr. J. Jayalalithaa Fisheries University
D MANIKANDAVELU Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University

https://doi.org/10.56093/ijans.v92i5.114995

Keywords:

Farm ponds, Feeding frequency, Feeding regime, Yield enhancement

Abstract

The present study aimed at evaluating appropriate feeding strategies to obtain maximum fish production from farm ponds at low/minimum investment costs was carried out under the Tamil Nadu-Irrigated Agriculture Modernization Project financed by the World Bank. The study was carried out for 180 days at the Directorate of Sustainable Aquaculture, Thanjavur, in four, equal-sized, farm ponds with two treatments in duplicates by stocking
5 species (Catla catla, Labeo rohita, Cirrhinus mrigala, Ctenopharyngodon idella and Cyprinus carpio) in the
ratio of 1:1:1:1:2. Treatment 1 (T1) involved the feeding strategy of pelleted feed with 20% CP (crude protein)
broadcast twice a day whereas in Treatment 2 (T2), the same feed was provided four times a day as feed balls
using feed trays. Among the five species, C. carpio (779±189.01 g) and C. mrigala (670±121.38 g) stocked in
T2 attained the maximum weight. Production parameters such as gross production, net production, average daily
growth rate were not significant between the treatments, however T2 showed comparatively better results than T1.
Survival rate of fishes was recorded significantly higher in T1 (35.54±2.60%) than in T2 (29.6±2.36%). Nutrients
such as total phosphorus, total nitrogen and total potassium were significant and highly discharged in T1 than in
T2. Experiment revealed that feeding fishes in trays helped to monitor the weight gain and feed intake with reduced
nutrient discharge, thereby proper feed management was obtained in T2 when compared to T1

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