Evaluation of Ghee Residue as Feed Ingredient for Labeo rohita

A 90-days feeding trial was conducted to study the effect of different levels of ghee residue (GR) on growth performance of Labeo rohita juveniles (Av. wt. 41.82±1.30g). Four different feeds were formulated with different graded levels of ghee residue viz, 0 (GR0), 12 (GR12), 24 (GR24) and 36% (GR36), respectively along with rice bran, mustard oil cake, soyabean meal, vitamin and mineral mixture and vegetable oil. The net weight gain was 6.9±1.8, 11.8±0.7, 15.64±0.47 and 8.89±1.61 g in treatments GR0, GR12, GR24 and GR36, respectively. Protein efficiency ratio was significantly (P<0.05) higher in GR24 vis-a-vis other groups. The feed conversion ratio was lower (P<0.05) in GR24. Specific growth rate and specific feeding was similar in all the treatments. Daily growth coefficient and temperature growth coefficient were significantly (P<0.05) higher in GR24. The contents of moisture, protein and ash were similar in all the treatments, however, lipid content increased significantly (P<0.05) with increasing levels of ghee residue with higher value in GR24. Iron, manganese and zinc contents were similar in all the groups. Among the fatty acids, saturated fatty acids were predominant compared to monounsaturated and polyunsaturated fatty acids. Therefore, ghee residue can be incorporated upto 24% level in the feed of L. rohita juveniles.