Manoj Kumar B.¹ , Keshavanath P.²

1 School of Fisheries Resource Management and Harvest Technology, Kerala University of Fisheries and Ocean Studies, Panangad-682 506, India
2 College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore-575 002, India
Author    Correspondence author
International Journal of Aquaculture, 2016, Vol. 6, No. 21   doi: 10.5376/ija.2016.06.0021
Received: 19 Oct., 2016    Accepted: 16 Nov., 2016    Published: 02 Dec., 2016

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Manoj K.B., and Keshavanath P., 2016, Dietary ‘G-Pro’ supplementation effects on growth, carcass composition and digestive enzymes in common carp, Cyprinus carpio (Linnaeus, 1758), International Journal of Aquaculture, 6(21): 1-9 (doi: 10.5376/ija.2016.06.0021)

The effect of a commercial feed additive ‘G-Pro’ was evaluated on growth, body composition and digestive enzyme activity of common carp, Cyprinus carpio. Fry of average weight 0.8±0.03 g stocked in 25 m³ outdoor cement tanks were fed daily on five isonitrogenous and isocaloric diets containing 0, 1, 2, 3 and 4 g G-Pro/kg diet respectively in triplicate for 140 days at 5% body weight in two equal meals. Fish fed on the feed additive incorporated diets showed improved growth performance, feed utilization and body composition compared to those fed the control diet. Growth, survival, food conversion, VSI, RNA: DNA ratio, carcass protein and fat were the best in fish fed 2 g G-Pro/kg diet. The water quality parameters monitored were within acceptable limits for carp culture. Results of this trial indicate that G-Pro exerts positive effect on the performance of common carp.

G-Pro; Cyprinus carpio; Growth; Survival; Carcass composition