Evaluation of Breweries Waste in the Feed of Catla catla fingerlings

A 90-day feeding trial was conducted to study the effect of replacement of soybean meal with breweries waste on growth performance of Catla catla fingerlings. Soybean meal was replaced by breweries waste @ 0, 15, 30 and 45% in the diet containing 55% soybean (Control) in treatments F₁, F₂, F₃ and F₄, respectively. The net weight gain (g) was 2.55±0.25, 3.25±0.15, 1.55±0.56 and 1.22±0.10 g in treatments F₁, F₂, F₃ and F₄, respectively. The net weight gain and protein efficiency ratio was significantly (P<0.01) higher in F₂ vis-à-vis other groups. The feed conversion ratio (FCR) was significantly (P<0.01) lower in F₂. Specific growth rate, survivability and specific feeding rate did not differ significantly among the feed treatments. Daily growth co-efficient and temperature growth co-efficient was significantly (P<0.01) higher in F₂. The carcass composition analysis revealed that the carcass protein and lipid differed significantly (P<0.05) among different feed groups. Carcass zinc content was significantly (P<0.05) higher in F₂, however, iron and manganese content were similar in all treatments. Water quality parameters were within the normal range for fish production. The study revealed that breweries waste can be incorporated upto 15% level with other feed ingredients in the feed of Catla catla fingerlings without any adverse effect.