Effect of Varying Levels of Dietary Protein on Food Utilization and Growth in Common Carp (Cyprinus carpio)
2014
Mahajan, Shashikant | Jain, R.K. | Tiwari, D.P. | Mudgal, Vishal
Three fish meal based pelleted diets containing 27% (A), 31% (B) and 35% (C) crude protein levels were tested using carp (Cyprinus carpio) early fry (450) divided into three groups of 3 replicates with 50 carps in a aquaria through a short term laboratory experiment of three weeks. The food consumption (%) was higher (P<0.05) in common carp fed on high protein diets. Food conversion and protein efficiency ratios were 1.61, 2.74, 1.82, 1.67 and 2.03, 1.27 in group A, B and C respectively with no significant difference among groups. Average weight gain (P<0.05) and increase in body length (122.57%) were highest in group C. The digestibility of dry matter, organic matter and crude protein were significantly (P<0.05) higher in diet with higher protein levels as compared to diet A. The protein levels of 27% with high carbohydrate (47.97%) may be optimum (77.01 Protein/Energy ratio) to support growth as observed in the present study as well as the food utilization in early fry of common carp fed on fish meal based pelleted diets.
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