Effect of Fish Oil on the Growth and Survival of Common Carp (Cyprinus Carpio) Fry

By : C. Judith Betsy , J. Stephen Sampath Kumar

Page No: 233-237

Abstract
Cyprinus carpio is a freshwater omnivorous fish having a preference for aquaculture worldwide. Nutrition of a cultivable fish is of utmost importance in its successful farming economically. Fish oil is a nutritional supplement known to promote the growth in many fishes. Purified sardine oil was added in the diet of common carp fry at three different concentrations (2.5%, 3.5% and 4.5%) and its influence on the growth and survival were studied and compared. Experimental feeds were checked for their fatty acid profile thereby the inclusion was confirmed and compared with the control feed. Early fry (10 numbers) of C. carpio (ABW 0.018g) were maintained in four troughs (T1 , T2 , T3 and C) and fed with the respective experimental diets ad libitum for 40 days under controlled conditions. Periodical bio-growth data (body weight, survival, weight gain, etc) were taken at 7 days interval and at the end of the study parameters like weight gain, weight gain percentage, specific growth rate and survival rate were determined. The results showed that inclusion of fish oil at 2.5% in the diet of fry had the highest growth and survival rate. The observation was discussed in the light of economical culture of C. carpio in tropical waters.

Authors :
C. Judith Betsy
Department of Inland Aquaculture, Fisheries College & Research Institute, Tuticorin, India – 628 008.

J. Stephen Sampath Kumar
Centre for Sustainable Aquaculture, Tamil Nadu Fisheries University, Nagapattinam, India.