Panjab University Research Journal (Science)
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EFFECT OF REPLACEMENT OF FISHMEAL WITH DEFATTED CANOLA ON GROWTH PERFORMANCE AND NUTRIENT RETENTION IN THE FINGERLINGS OF CHANNA PUNCTATUS (BLOCH.)

*Meenakshi Jindal and S.K. Garg
Department of Zoology and Aquaculture, CCS HAU, Hisar - 125 004

*Corresponding author : mypshya@rediffmail.com


Abstract
To study the growth performance of Channa punctatus, ten isonitrogenous diets (1-10) were formulated by replacing fish meal (FM) with defatted canola (DFC) (rapeseed) at four inclusion levels (25, 50, 75 and 100 gKg-1) from the reference diet with and without supplementing the diets with a mineral premix and amino acids (MPA). Studies have revealed that live weight gain (g) growth per cent gain in body weight and specific growth rate (SGR % d-1) were significantly (P< 0.05) enhanced in fish fed on diets containing DFC at high (75-100 gKg-1) inclusion levels. Better growth performances of fishes were further enhanced on supplementing the diets with MPA. Protein efficiency ration (PER) and Apparent Nutrient Digestibility (APD) (%) values increased, while those of FCR, excretory levels of total ammonia (NH3-N) and reactive phosphate (P) production decreased with the each increase in the inclusion levels of DFC in the diets.

Key words: Channa punctatus, defatted canola, protein, growth, digestibility, excretion, carcass.

 


 
 
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