DIFFERENT LEVELS OF PROTEIN ON THE PERFORMANCE OF SYNTHETIC BROILER

Abstract

An experiment was conducted with fifty four, 21 days old synthetic broiler (fifth generation) to study the effect of different levels of dietary protein on the performance of broiler during growing and finisher period. Three levels of protein i.e. T1 (18% CP), T2 (19% CP) and T3 (20%CP) were considered as the dietary treatments. The body weight achieved at 42 days of age was 1422.00, 1705.37 and 1563.67 gm in T1, T2 and T3, respectively which differs significantly (p< 0.01). The live weight gain at 42 days was also highest in T2 (19% CP) diet and significantly (p< 0.05) differed from T1 (18% CP) and T3 (20% CP) diets. Feed conversion ratios at the end of experimental period were 2.20, 1.75 and 1.87 in T1, T2 and T3, respectively which differs significantly (p<0.05). The performance index at 42 days of age was 50.66, 82.67 and 63.58 for T1, T2 and T3 respectively while feed consumption, livability and meat yield were not significantly (p>0.05) affected by dietary treatments. The net profit per kg live broiler was significantly highest (Tk.14.09/kg) (p<0.01) in T2 diet as compared to other treatments. It may be concluded that 19% crude protein diet, was the best with respect to growth, FCR and net profit for synthetic broiler (fifth generation) during growing and finisher period.DOI = http://dx.doi.org/10.3329/bjvm.v8i2.11193 Bangl. J. Vet. Med. (2010). 8 (2) : 117-122