Indian Journal of Animal Nutrition

UGC CARE (Group 1)
  • Year: 2024
  • Volume: 41
  • Issue: 2

Effect of dietary iron levels on growth, body composition and enzyme activities of Rohu (Labeo rohita hamilton) advanced fingerlings

1Regional Research Centre, Central Institute of Freshwater Aquaculture, Rahara, Kolkata-700 118, West Bengal

2Aquaculture Laboratory Department of Zoology, The University of Burdwan, Golapbagh, Burdwan-713 104

4Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar-751 002, Odisha

Abstract

The iron requirement study was conducted in Labeorohita advanced fingerlings for 67-day. Casein, gelatin and dextrin-based six isonitrogenous purified diets were formulated with graded levels of iron (as FeSO4. 7H2O) viz., Group 1 (0 ppm; Control), Group 2 (25 ppm), Group 3 (50 ppm), Group 4 (75 ppm), Group 5 (100 ppm) and Group 6 (125 ppm). The results indicated that net weight gain, specific growth rate, daily growth coefficient and protein efficiency ratio were significantly (P<0.05) higher in group 3 (fed 50 ppm iron). The feed conversion ratio was significantly lower in group 3. The activities of aspartate transaminase, alanine transaminase and alkaline phosphatase were significantly (P<0.05) higher in group 3. The carcass composition of advanced rohu fingerlings revealed that carcass protein was significantly (P<0.05) higher in group 3 (50 ppm iron). The present study indicated that 50 ppm dietary iron is required for Labeorohita advanced fingerlings for optimum growth and tissue iron deposition.

Keywords

AST, ALT, ALP, Growth performance and iron, Labeorohita